Gu78b

SV8JE 4 kwt amplifier GU78B sv8je-4kw-pa.jpg sv8je-4kw-pa-power-supply.jpg sv8je-4kw-pa-pic.jpg sv8je-4kw-pa-pic-1.jpgQuick links. Clubs and societies that I belong to. Radio friends with websites. Ham software, DXcluster and digimodes - computers-in-ham-radio. Construction and electronics including K2, K3 and QRP - constructor's assistance. QRO amplifiers, circuits and components - especially those using the GS35b. Contesting and operating - tips.GU78B GU74B ( MP ) C - sold 4CX3000a Amp. Parts TUBES ( only a few left ) 3cpx1500a7 / 3cx800a7. 3cx3000a7 . 3cpx800a7 ... Search result for PCL84 GU78b. Search for component: sample: 13LO37i : Multiple search: sample: 6N1P-EV 6H2nEB 6N3P DR ECL82 EF 80 EL-34: Tips: About 2m GU-78b 4 kW Amplifier The resource is currently listed in dxzone.com in a single category. The main category is Amateur linear amplifiers that is about VHF linear amplifiers. This link is listed in our web site directory since Wednesday Jul 21 2010, and till today "2m GU-78b 4 kW Amplifier" has been followed for a total of 1345 times.So far received 1 votes for a total score of 10.00/10General Features: Output Power 1.8 – 30 MHz 2K+, 6m 1K+ Device: 2x BLF189XR Auto Band Selection ICOM®; YAESU® Band data Interface CAT Connectivity LAN Connectivity Wi-Fi... 1.8-70MHz Solid State Linear Amplifier 1200W output 1.8-30MHz (1000W 50MHz, 500W 70MHz) Drive level 50W (10W/25W optional) Fully automatic band selection 3 antenna ... NEW gu-78b tube. Condition: New. Quantity: 1 available / 1 sold. Price: US $750.00. $34 for 24 months with PayPal Credit *. General description of the short wave power amplifier The linear power amplifier is designed for all short wave bands 1.8 to 29 MHz ( including WARC - bands ) and all modes.Quick links. Clubs and societies that I belong to. Radio friends with websites. Ham software, DXcluster and digimodes - computers-in-ham-radio. Construction and electronics including K2, K3 and QRP - constructor's assistance. QRO amplifiers, circuits and components - especially those using the GS35b. Contesting and operating - tips.Name: GU78B: Type: tetrode: Cathode type: oxide,indirect heating: Application field: power amplification in distributed amplifier and amplification of SSB signals up to 1.5kW up to 75MH Search result for GU78b GU84b. Search for component: sample: rc-24b GU-39b : Multiple search: sample: 6N1P-EV 6H2nEB 6N3P DR ECL82 EF 80 EL-34: Tips: Dec 04, 2014 · GU78b Ceramic tetrode: Cooler: Centrifugal blower + axial blower: Power supply: 2 x 230 V – 50 Hz one or two phases: Transformers: 2 pcs of toroidal transformer 2.5 kVA: Protection circuits: – SWR too high – Anode current too high – Screen current too high – Grid current too high – Mistuning of power amplifier – Hot switching ... Jun 24, 2022 · AMPHF - Russian Tube shortage GU84b ,GU78b GU74b This is Howard VE2AED , I have been fortunate to find a great person in the Ukraine who stocks impossible to get Russian tubes for some of the more popular OM Power and various other HF amplifiers .Tube numbers include the GU84b GU78b and GU74b . Contribute. to QRZ. W8BBX USA. Login is required for additional detail. Email: Login required to view. XML Subscriber Lookups: 11260.This amplifier uses a GU-78B with a 1/2l anode line. This tube is capable of up to 4KW output at 144MHz, but tube life is short at that level. This particular PA is to be operated at about 750W out; the tube lasts a VERY long time at this lower level and is virtually free of intermodulation products.General description and the advantages of the OM3006+ Amplifier. The linear amplifier OM3006+ is designed for 50 MHz amateur bands from 50 till 52 MHz and all modes. It is fitted with a ceramic tetrode GU78b. In addition, this amplifier can be equipped with enhanced IO box and can therefore be remotely controlled, thanks to LAN port and adapted ...Dec 04, 2014 · GU78b Ceramic tetrode: Cooler: Centrifugal blower + axial blower: Power supply: 2 x 230 V – 50 Hz one or two phases: Transformers: 2 pcs of toroidal transformer 2.5 kVA: Protection circuits: – SWR too high – Anode current too high – Screen current too high – Grid current too high – Mistuning of power amplifier – Hot switching ... Re: [Amps] The GU84B and GU78B tubes. Carl, The GU84B and the so called 4CX1600B are completely different tubes. Similarly the 4CX1600U / GS23B is quite different from the now extinct GU91B. However, the readily available GS23B makes an excellent QRO tube for UHF 70 cm and 23 cm amps. The 4CX1600A/B was a re-badged GU91B (a very fine linear SSB ...GS35b 6m Amplifier. Here are some pictures of my GS35b amplifier for 6 meters I built back in 2005. 90W drive delivers about 1500W output. This amplifier was designed to run 24/7 key down for heavy contesting and high duty cycle WSJT modes. The output network is a Pi-L to suppress the second harmonic and a T-network is used for the input. Tube: GU78B ceramic tetrode Cooler: Centrifugal blower + Axial blower Power supply: switchable voltages - 220/230/240V for 50Hz or 230/240/250V for 60Hz (or other primary voltages e.g. 200V 50/60Hz for Japan) Transformers: 2 pcs of toroidal transformer 2.5 kVA Parameters: 485 x 200 x 455mm (width x height x depth) Weight: 32 kg Title: GU78B Author: Electronintorg Subject: JA-2003-01-18 Created Date: 12/13/2002 5:42:49 PM The amp was now fitted with a GU84B instead of the original GU78B tube (my request to receive the altered specifications of the amp, stays unanswered til today). So-called reason for the change of tube was that the manufacturer had many quality problems with the GU78B (quote manufacturer: 'We have changed to this tube for exactly the reason ...が建てられており、シャックにはリニアアンプと、gu78b gu84b gu74b fu727f と いった送信管が並べれておりました。 imd 等を重視するとすれば fu727f(パワーが出る中華球)よりも imd が比較的 良好なロシア球 (gu78b) が良いのですかね ? 情報交換したいです。 The gu78b tube in the om3501a or in 3501 is again produced , the latest I saw on the market was 2016, affordable. The anode cooler surface is greater than the gu84b, less air obstruction also. The output is by specs 2,5kW 24/24 7/7 , It will handle the 3,5 kW output in ICAS, all within the specs as anode voltage/current/sreen and grid current. Aug 21, 2013 - DC9DZ: Project Katana 12K 3PHS - Power Amplifier (PA) using two GU78b. Aug 21, 2013 - DC9DZ: Project Katana 12K 3PHS - Power Amplifier (PA) using two GU78b. Pinterest. Today. Explore. When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with ...The GS35b needs a minimum of 85CFM airflow, the blower fitted from new had a rating of 30.5 litres per second, now that sounds good, but when converting 30.5LPS to CFM, it turns out to be 64.6CFM, that's around 20CFM short of minimum! Note: These under cooling issues are concerned with the 2005 model amplifier, but it was interesting to see ...The gu78b tube in the om3501a or in 3501 is again produced , the latest I saw on the market was 2016, affordable. The anode cooler surface is greater than the gu84b, less air obstruction also. The output is by specs 2,5kW 24/24 7/7 , It will handle the 3,5 kW output in ICAS, all within the specs as anode voltage/current/sreen and grid current. Data of DRESSLER Katana-7K RF Linear Amplifier. no relais switching under power conditions, soft start inrush, 240 sec delay time for full power, turbine blower with 2 speeds. Well regulated screen and grid supply for +ve and -ve currents as well as current limiting to protect the tube and minimize the IMD.26/12/2011 · 4x150 - 4cx250 - 4cx350 - 4cx600 - 3cx400 - 3cx800 - 3cx1.200 - srl353 3cx1.500-3cx3.000-3cx5.000-3cx10.000 3cx15.000a7 rs2012cl rs2018cl rs2022cl rs2024cl rs2032cl rs2068cl th344 th345 th373 th375 th382 th582 GU78b. Alt hvad der angår modtager, sender og perifer enheder. 1 post • Page 1 of 1. oz7c Posts: 1279 Joined: Sun Feb 04, 2018 2:30. GU78b. Post by oz7c » Fri Mar 23, 2018 18:38. Hej Test af GU78b/74b/84b Svetlana Der er følgende du skal prøve Tag ... Datasheet. Description. GTM CORPORATION. GU8 0N03. 331Kb / 5P. N-CHANNEL ENHANCEMENT MODE POWER MOSFET. GU8 5L02. 278Kb / 5P. N-CHANNEL ENHANCEMENT MODE POWER MOSFET.Type: tetrode. Tube is NEW, NOS and never used before! Mutual conductance: 40 to 80 mA/V. Application field: power amplification in distributed amplifier and amplification of SSB signals up to 1.5kW up to 75MH.GS35B GU74B GU84B GI7B GI46B GM70 GS23B GI7BT GI39B GS31B GU5B GU48 GS3A GS15B GS36B GU39B GU78B GU91B GU93B GU96B GU46 GU50 GU81M GU81 DataSheets PDF . This page is currently under construction. RUSSIAN made 0.1-10kW Transmitting Tubes Data-Sheets in PDF files ***** Power Triodes: 3CX800A7 (Svetlana 3CX800A7 ...This conversion and pictures are a guideline. There are lethal voltage inside this amplifier, skills how to work safe is needed. Conversion time : demounting gu84b socket/blower : 1.5 h. demounting gu84b socket and mounting gu78b chimney: 3 h. mouting new socket/blower in the amplifier chassis: 1 h. GU78B tetrode: Maxon; Pix Doc Mod Model Band/QRG Max P/O Quicknote; CA-1461: 136-172 MHz: 25 W: CA-1462: 440-512 MHz: 20 W: Microset; Pix Doc Mod Model Band/QRG Max P/O Quicknote; SR200: 2 m: 200 W-Microwave Modules ; Pix Doc Mod Model Band/QRG Max P/O Qu ... OM3006+ Amplifier Price: 4625 € The linear amplifier OM3006+ is designed for 50 MHz amateur bands from 50 till 52 MHz and all modes. It is fitted with a ceramic tetrode GU78b. In addition, this...Type: tetrode. Tube is NEW, NOS and never used before! Mutual conductance: 40 to 80 mA/V. Application field: power amplification in distributed amplifier and amplification of SSB signals up to 1.5kW up to 75MH.gu-78b. GU-78B. Tetrode. The GU-78B tetrode is used for power amplification in distributed amplifiers and single-sideband signal amplifiers at frequencies up to 250 MHz, in RF industrial engineering equipment.GS35B GU74B GU84B GI7B GI46B GM70 GS23B GI7BT GI39B GS31B GU5B GU48 GS3A GS15B GS36B GU39B GU78B GU91B GU93B GU96B GU46 GU50 GU81M GU81 DataSheets PDF . This page is currently under construction. RUSSIAN made 0.1-10kW Transmitting Tubes Data-Sheets in PDF files ***** Power Triodes: 3CX800A7 (Svetlana 3CX800A7 ...Socket for GU78B tetrode. $100. GU84b tetrode. $450. Socket for GU84B . $50. PENTODES. GU46 pentode (exclusively linear tube) 800-1000W, similar to 4-1000A or QB5/1750 for 50 MHz amateur bands from 50 till 52 MHz and all modes With GU78B ceramic tetrode tub.. Add to Cart. OM Power OM-4001HF - Heavy Duty Legal Limit Manual Tune Amplifier. 160 - 10 m. Full QSK-ready. The 4000 W output OM4001HF linear amplifier is designed ... The GU-78B tetrode is used for power amplification in distributed amplifiers and single-sideband signal amplifiers at frequencies up to 250 MHz, in RF industrial engineering equipment. New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... Read more about the condition New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging ...GU78B 78: Electronintorg Q~ GU78B.pdf (228055 bytes) GU8 Marconi R° GU8.pdf (128884 bytes) GU80 80 Soviet P~ GU80.pdf (120251 bytes) (ru) GU81M ... NOS Tube tested in OM3500 PA. Tube nr1 Tube: GU78B ceramic tetrode Cooler: Centrifugal blower + Axial blower Power supply: switchable voltages - 220/230/240V for 50Hz or 230/240/250V for 60Hz (or other primary voltages e.g. 200V 50/60Hz for Japan) Transformers: 2 pcs of toroidal transformer 2.5 kVA Parameters: 485 x 200 x 455mm (width x height x depth) Weight: 32 kgGeneral description and the advantages of the OM3501A amplifier. The automatic linear amplifier OM3501A is designed for all short wave amateur bands from 1.8 to 29 MHz (including WARC – bands) and all modes. It is equipped with a one piece of ceramic tetrode GU78B. The advantages of OM3501A: • Full compatibility with TRXs-CAT. The GU-78B tetrode is used for power amplification in distributed amplifiers and single-sideband signal amplifiers at frequencies up to 250 MHz, in RF industrial engineering equipment. for 50 MHz amateur bands from 50 till 52 MHz and all modes With GU78B ceramic tetrode tub.. Add to Cart. OM Power OM-4001HF - Heavy Duty Legal Limit Manual Tune Amplifier. 160 - 10 m. Full QSK-ready. The 4000 W output OM4001HF linear amplifier is designed ... This conversion and pictures are a guideline. There are lethal voltage inside this amplifier, skills how to work safe is needed. Conversion time : demounting gu84b socket/blower : 1.5 h. demounting gu84b socket and mounting gu78b chimney: 3 h. mouting new socket/blower in the amplifier chassis: 1 h. NOS Tube tested in OM3500 PA. Tube nr1• Tube: Single GU78B with forced air cooling(200m3/h) • Primary Power: 220-240 V AC, 50-60 Hz, single phase, 150VA. • Secondary HV Power Supply: 220-240V or 400v AC, 50-60 Hz, btn 2 phase, 4500VA. (ME3000-S)The HV supply is option. • Complies with CE safety and electromagnetic compatibility requirements.United States. is. 19. days. The GU-78B tetrode is used for power amplification in distributed amplifiers and single-sideband signal amplifiers at frequencies up to 250 MHz, in RF industrial engineering equipment. Tube is NEW, NOS and never used before! Name: GU78B; Type: tetrode; Cathode type: oxide, indirect heating; NOS Tube tested in OM3500 PA. Tube nr2Output network. Inductor: 20 uH, Caps: 250 pF var. + 390 pF fixed / 1000 pF var. + 1 nF fixed. Computer control. Plate current (every 5 msec), SWR, all switching functions, no relais switching under power conditions, soft start inrush, 240 sec delay time for full power, turbine blower with 2 speeds. Well regulated screen and grid supply for +ve ...Category: Electron Tubes. Time Owned: 6 to 12 months. I have a GU-78B tube in my PA. After 1000 hours of work, a short circuit occurred between the first grid and the cathode. This happens when the GU-78B heats up. "Treatment" was applied. Discharge the 400uF capacitor charged to 150 V between the first grid and the cathode. LY1DQ ham radio resources [email protected] Created by LY3NML The GU-74B tetrode is used in wideband non-tunable amplifiers and for single-sideband powerGeneral description and the advantages of the OM3006+ Amplifier. The linear amplifier OM3006+ is designed for 50 MHz amateur bands from 50 till 52 MHz and all modes. It is fitted with a ceramic tetrode GU78b. In addition, this amplifier can be equipped with enhanced IO box and can therefore be remotely controlled, thanks to LAN port and adapted ...It is impossible to override the screen and grid dissipation at any working conditions. Metering. Output, SWR, Plate current, Plate voltage, Screen & Grid current / voltage. Housing. High quality black eloxial aluminia. Dimension. 420w x 155h x 480d mm³. Weight.Search result for GU78b GU84b. Search for component: sample: rc-24b GU-39b : Multiple search: sample: 6N1P-EV 6H2nEB 6N3P DR ECL82 EF 80 EL-34: Tips: linear amplifier hf vhf home made with 4cx800 gu74b gu78b 3cx1200 3cx1200a7 8877 3cx1500 4cx250 4cx15000a gu36b. Amplificatori Lineari I 5 U X J QRO Home Made Linear Amplifier HF AMPLIFIER. Solid State HF Amplifier 16 MRF150 2.4-KWatt SOLID STATE QRO Amplifier 16 X MRF150; G.G. A falcon ...GU78B Tube. $565. Socket for GU78B tetrode. $100. GU84b tetrode. $450. Socket for GU84B . $50. PENTODES. GU46 pentode (exclusively linear tube) 800-1000W, similar to 4-1000A or QB5/1750 See picture of power amplifier with this tube. $60 . GK71 Pentode - $30 sockets - SOLDThe voltage for a GU78b tube is about 96V and every volt means the cathode current change about 40-80 miliampers. Therefore the regulator is permanently under the current for better voltage stability. The tube the maximal G1 voltage should be observed while blocking it for RX so the tube does not get damaged. NOS Tube tested in OM3500 PA. Tube nr2 This amplifier uses a GU-78B with a 1/2l anode line. This tube is capable of up to 4KW output at 144MHz, but tube life is short at that level. This particular PA is to be operated at about 750W out; the tube lasts a VERY long time at this lower level and is virtually free of intermodulation products. Russian generator tetrode GU-78B tube ceramic-metal for power amplification at frequenciesup to 250MHz with an output power of at least 2.5kW.HF Lineaarinen 1 x Siemens RS1072C. HF Lineaarinen 1 x Eimac 4-1000A. HF Lineaarinen 1 x Eimac 3CX5000. HF Lineaarinen 2 ja 3 x RS1002. VHF Lineaarinen 1 x QQE 06/40. VHF Lineaarinen 2 x 4CX350. HF Lineaarinen 1 x GU78B. NOTE: GU78B Tube - $450 Socket for GU78B tetrode - SOLD GU84b tetrode - $390 Socket for GU84B - $150 PENTODES: GU46 pentode (exclusively linear tube) - $80 800-1000W, similar to 4-1000A or QB5/1750 GU50 pentode (analog of German LS50)-$10, socket $7 GU81M - $65, socket - $35 Two of these tubes run 3kW without cooling and the associated blower ...Quick links. Clubs and societies that I belong to. Radio friends with websites. Ham software, DXcluster and digimodes - computers-in-ham-radio. Construction and electronics including K2, K3 and QRP - constructor's assistance. QRO amplifiers, circuits and components - especially those using the GS35b. Contesting and operating - tips.About 2m GU-78b 4 kW Amplifier The resource is currently listed in dxzone.com in a single category. The main category is Amateur linear amplifiers that is about VHF linear amplifiers. This link is listed in our web site directory since Wednesday Jul 21 2010, and till today "2m GU-78b 4 kW Amplifier" has been followed for a total of 1345 times.So far received 1 votes for a total score of 10.00/10DX Engineering GU74B/4CX800A Ceramic Power Tetrodes are high performance ceramic/metal tetrodes with a plate dissipation rating of 800 watts.The performance characteristics of the 4CX800A allow its use as a high gain grid-driven RF amplifier or as used in grounded grid service. These NOS (new old stock) tubes are direct replacements for use in ...Modification of an RFD-1A (TMC) Linear Amplifier. PL-8295 has been replaced with GU-78B to increase power. Click to Enlarge. Typical Operating Characteristics. Output power: 3.8KW (with 100w input ) Plate voltage:3300v. Plate current:1.8A. screen voltage:360v. screen current: 20mA.This amplifier uses a GU-78B with a 1/2l anode line. This tube is capable of up to 4KW output at 144MHz, but tube life is short at that level. This particular PA is to be operated at about 750W out; the tube lasts a VERY long time at this lower level and is virtually free of intermodulation products.This amplifier uses a GU-78B with a 1/2l anode line. This tube is capable of up to 4KW output at 144MHz, but tube life is short at that level. This particular PA is to be operated at about 750W out; the tube lasts a VERY long time at this lower level and is virtually free of intermodulation products. Quick links. Clubs and societies that I belong to. Radio friends with websites. Ham software, DXcluster and digimodes - computers-in-ham-radio. Construction and electronics including K2, K3 and QRP - constructor's assistance. QRO amplifiers, circuits and components - especially those using the GS35b. Contesting and operating - tips.GU-78B / GU78B / GU78-B HAM tetrode tubeが建てられており、シャックにはリニアアンプと、gu78b gu84b gu74b fu727f と いった送信管が並べれておりました。 imd 等を重視するとすれば fu727f(パワーが出る中華球)よりも imd が比較的 良好なロシア球 (gu78b) が良いのですかね ? 情報交換したいです。HF Lineaarinen 1 x Siemens RS1072C. HF Lineaarinen 1 x Eimac 4-1000A. HF Lineaarinen 1 x Eimac 3CX5000. HF Lineaarinen 2 ja 3 x RS1002. VHF Lineaarinen 1 x QQE 06/40. VHF Lineaarinen 2 x 4CX350. HF Lineaarinen 1 x GU78B. NOS Tube tested in OM3500 PA. Tube nr1GU78B ceramic tetrode: Cooler: Centrifugal blower + Axial blower: Response speed of AUTO tune: less than 0,5s within same BAND, less than 2s if out of BAND: Power supply: switchable voltages - 220/230/240V for 50Hz or 230/240/250V for 60Hz (or other primary voltages e.g. 200V 50/60Hz for Japan) Transformers: 2 pcs of toroidal transformer 3kVA ... About 2m GU-78b 4 kW Amplifier. The resource is currently listed in dxzone.com in a single category. The main category is Amateur linear amplifiers that is about VHF linear amplifiers. This link is listed in our web site directory since Wednesday Jul 21 2010, and till today " 2m GU-78b 4 kW Amplifier " has been followed for a total of 1345 times. Tube: GU78B ceramic tetrode Cooler: Centrifugal blower + Axial blower Power supply: switchable voltages - 220/230/240V for 50Hz or 230/240/250V for 60Hz (or other primary voltages e.g. 200V 50/60Hz for Japan) Transformers: 2 pcs of toroidal transformer 2.5 kVA Parameters: 485 x 200 x 455mm (width x height x depth) Weight: 32 kgが建てられており、シャックにはリニアアンプと、gu78b gu84b gu74b fu727f と いった送信管が並べれておりました。 imd 等を重視するとすれば fu727f(パワーが出る中華球)よりも imd が比較的 良好なロシア球 (gu78b) が良いのですかね ? 情報交換したいです。 Popis. Elektronka GU74B. Číst dál. Zobrazí dobu potřebnou pro zajištění většího množství produktu, než je skladem. Kód. Hmotnost [kg] Stav skladu. Cena. ACGU74B. General description of the short wave power amplifier The linear power amplifier is designed for all short wave bands 1.8 to 29 MHz ( including WARC - bands ) and all modes.が建てられており、シャックにはリニアアンプと、gu78b gu84b gu74b fu727f と いった送信管が並べれておりました。 imd 等を重視するとすれば fu727f(パワーが出る中華球)よりも imd が比較的 良好なロシア球 (gu78b) が良いのですかね ? 情報交換したいです。 Quick links. Clubs and societies that I belong to. Radio friends with websites. Ham software, DXcluster and digimodes - computers-in-ham-radio. Construction and electronics including K2, K3 and QRP - constructor's assistance. QRO amplifiers, circuits and components - especially those using the GS35b. Contesting and operating - tips.GU78b/4cx2500 144 MHz > 4000 Watts 20 - 21 dB 70% linear mode 220-240 Volt 19 x 17 x 11 Inch 54 Kg: Heater and High Voltage both "soft" start; Type: tetrode. Tube is NEW, NOS and never used before! Mutual conductance: 40 to 80 mA/V. Application field: power amplification in distributed amplifier and amplification of SSB signals up to 1.5kW up to 75MH.The GU-78B tetrode is used for power amplification in distributed amplifiers and single-sideband signal amplifiers at frequencies up to 250 MHz, in RF industrial engineering equipment. for 50 MHz amateur bands from 50 till 52 MHz and all modes With GU78B ceramic tetrode tub.. Add to Cart. OM Power OM-4001HF - Heavy Duty Legal Limit Manual Tune Amplifier. 160 - 10 m. Full QSK-ready. The 4000 W output OM4001HF linear amplifier is designed ... Title: GU78B Author: Electronintorg Subject: JA-2003-01-18 Created Date: 12/13/2002 5:42:49 PM Matched Pair FU 728F (Electron Tubes) Matched pair of metal-ceramic transmitting power tetrodes with oxide-coated unipotential cathode indirectly heated.Can be used in our power amplifiers.. Price Ex VAT: 940.00€. Add to Cart. Showing 1 to 2 of 2 (1 Pages) gu70l02 datasheet n-channel enhancement mode power mosfet - gtm corporation gu70n03 3-terminal positive voltage regulators GU78B GU74B ( MP ) C - sold 4CX3000a Amp. Parts TUBES ( only a few left ) 3cpx1500a7 / 3cx800a7. 3cx3000a7 . 3cpx800a7 3cx1500d3 4cx5000 yl1050 gs23b 3cx1500a7/8877 4cx1500b ...• Tube: Single GU78B with forced air cooling(200m3/h) • Primary Power: 220-240 V AC, 50-60 Hz, single phase, 150VA. • Secondary HV Power Supply: 220-240V or 400v AC, 50-60 Hz, btn 2 phase, 4500VA. (ME3000-S)The HV supply is option. • Complies with CE safety and electromagnetic compatibility requirements.Output network. Inductor: 20 uH, Caps: 250 pF var. + 390 pF fixed / 1000 pF var. + 1 nF fixed. Computer control. Plate current (every 5 msec), SWR, all switching functions, no relais switching under power conditions, soft start inrush, 240 sec delay time for full power, turbine blower with 2 speeds. Well regulated screen and grid supply for +ve ...Re: [Amps] The GU84B and GU78B tubes. Carl, The GU84B and the so called 4CX1600B are completely different tubes. Similarly the 4CX1600U / GS23B is quite different from the now extinct GU91B. However, the readily available GS23B makes an excellent QRO tube for UHF 70 cm and 23 cm amps. The 4CX1600A/B was a re-badged GU91B (a very fine linear SSB ...Search result for GU78b GU84b. Search for component: sample: rc-24b GU-39b : Multiple search: sample: 6N1P-EV 6H2nEB 6N3P DR ECL82 EF 80 EL-34: Tips: Title: GU78B Author: Electronintorg Subject: JA-2003-01-18 Created Date: 12/13/2002 5:42:49 PM It is equipped with a ceramic tetrode GU78b. Specifications: Price: TBD. Link. Related Posts. RF-KIT "B26 RF2K+" HF Linear Amplifier General Features: Output Power 1.8 - 30 MHz 2K+, 6m 1K+ Device: 2x BLF189XR Auto Band Selection ICOM®; YAESU® Band data Interface CAT Connectivity LAN Connectivity Wi-Fi... Germini DX1200 HF Linear ...gu70l02 datasheet n-channel enhancement mode power mosfet - gtm corporation gu70n03 3-terminal positive voltage regulators New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... Read more about the condition New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging ... GU78B GU74B ( MP ) C - sold 4CX3000a Amp. Parts TUBES ( only a few left ) 3cpx1500a7 / 3cx800a7. 3cx3000a7 . 3cpx800a7 ... With GU78B tube.... As our club is very active in VHF/UHF contests there has always been a need of a reliable high-power PA for 2m band. Although the current power limit in OK is just 750 W, we decided to construct a brand new PA with a big margin of power which would last "forever" and can be possibly used for EME as well. Find many great new & used options and get the best deals for GU-78B, ГУ-78Б 4CX3000 Svetlana Tetrode TUBE NOS at the best online prices at eBay! Free shipping for many products!Aug 21, 2013 - DC9DZ: Project Katana 12K 3PHS - Power Amplifier (PA) using two GU78b. Aug 21, 2013 - DC9DZ: Project Katana 12K 3PHS - Power Amplifier (PA) using two GU78b. Pinterest. Today. Explore. When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with ...Name: GU78B: Type: tetrode: Cathode type: oxide,indirect heating: Application field: power amplification in distributed amplifier and amplification of SSB signals up to 1.5kW up to 75MH 10. Sep. 2010. PANICK V - New 5kW Power Amplifier for 2 m band with 2 x 3CPX1500A7. 01. Jun. 2010. My new article "Printed Omni Directional Wi-Fi Antenna for 5.6 GHz " published in USA magazine "antenneX", June 2010, Issue No.158.General description of the short wave power amplifier The linear power amplifier is designed for all short wave bands 1.8 to 29 MHz ( including WARC - bands ) and all modes.NEW gu-78b tube. Condition: New. Quantity: 1 available / 1 sold. Price: US $750.00. $34 for 24 months with PayPal Credit *. が建てられており、シャックにはリニアアンプと、gu78b gu84b gu74b fu727f と いった送信管が並べれておりました。 imd 等を重視するとすれば fu727f(パワーが出る中華球)よりも imd が比較的 良好なロシア球 (gu78b) が良いのですかね ? 情報交換したいです。 Jun 24, 2022 · AMPHF - Russian Tube shortage GU84b ,GU78b GU74b This is Howard VE2AED , I have been fortunate to find a great person in the Ukraine who stocks impossible to get Russian tubes for some of the more popular OM Power and various other HF amplifiers .Tube numbers include the GU84b GU78b and GU74b . Matched Pair FU 728F (Electron Tubes) Matched pair of metal-ceramic transmitting power tetrodes with oxide-coated unipotential cathode indirectly heated.Can be used in our power amplifiers.. Price Ex VAT: 940.00€. Add to Cart. Showing 1 to 2 of 2 (1 Pages) GU78B Tube. $565. Socket for GU78B tetrode. $100. GU84b tetrode. $450. Socket for GU84B . $50. PENTODES. GU46 pentode (exclusively linear tube) 800-1000W, similar to 4-1000A or QB5/1750 See picture of power amplifier with this tube. $60 . GK71 Pentode - $30 sockets - SOLDThis conversion and pictures are a guideline. There are lethal voltage inside this amplifier, skills how to work safe is needed. Conversion time : demounting gu84b socket/blower : 1.5 h. demounting gu84b socket and mounting gu78b chimney: 3 h. mouting new socket/blower in the amplifier chassis: 1 h. This amplifier uses a GU-78B with a 1/2l anode line. This tube is capable of up to 4KW output at 144MHz, but tube life is short at that level. This particular PA is to be operated at about 750W out; the tube lasts a VERY long time at this lower level and is virtually free of intermodulation products.GU78B (GU-78B) Svetlana Socket with Chimney $174.50: HIGH VOLTAGE CAPACITOR 60.0uF/4000V New $119.50: [email protected] KV Doorknob Capacitors.Brand New. Lot of 2 $24.50: GI-7BT (GI-7B/GI7B,Tropical) Tube. New in Box. $35.50: GS-35B (GS35B,GS35) 2500 W triode. NEW IN BOX $124.50: 25ohm/50W StripLines Resistors.Lot of 2pcs $15.50: Vacuum Variable Cap.20 ...With GU78B tube.... As our club is very active in VHF/UHF contests there has always been a need of a reliable high-power PA for 2m band. Although the current power limit in OK is just 750 W, we decided to construct a brand new PA with a big margin of power which would last "forever" and can be possibly used for EME as well. Find many great new & used options and get the best deals for GU-78B, ГУ-78Б 4CX3000 Svetlana Tetrode TUBE NOS at the best online prices at eBay! Free shipping for many products! New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... Read more about the condition New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging ...This amplifier is designed around the low cost Russian GS35B triode, and features: 1.5KW output using grounded grid circuitry with about 100 Watts drive. A commercial (expensive) tube socket is not required. Easy to fabricate low cost air system chimney. Fast vacuum relay T/R switching.Title: GU74B Author: Electronintorg Subject: JA-2003-01-18 Created Date: 12/13/2002 5:41:27 PM Title: GU74B Author: Electronintorg Subject: JA-2003-01-18 Created Date: 12/13/2002 5:41:27 PM Quick links. Clubs and societies that I belong to. Radio friends with websites. Ham software, DXcluster and digimodes - computers-in-ham-radio. Construction and electronics including K2, K3 and QRP - constructor's assistance. QRO amplifiers, circuits and components - especially those using the GS35b. Contesting and operating - tips.gu70l02 datasheet n-channel enhancement mode power mosfet - gtm corporation gu70n03 3-terminal positive voltage regulatorsName: GU78B: Type: tetrode: Cathode type: oxide,indirect heating: Application field: power amplification in distributed amplifier and amplification of SSB signals up to 1.5kW up to 75MHGU78B GU74B ( MP ) C - sold 4CX3000a Amp. Parts TUBES ( only a few left ) 3cpx1500a7 / 3cx800a7. 3cx3000a7 . 3cpx800a7 ... Mar 26, 2020 - DC9DZ: Project Katana 12K 3PHS – Power Amplifier (PA) using two GU78b. Mar 26, 2020 - DC9DZ: Project Katana 12K 3PHS – Power Amplifier (PA) using two GU78b . Pinterest. Today. Explore. When autocomplete results are available use up and ... HF Lineaarinen 1 x Siemens RS1072C. HF Lineaarinen 1 x Eimac 4-1000A. HF Lineaarinen 1 x Eimac 3CX5000. HF Lineaarinen 2 ja 3 x RS1002. VHF Lineaarinen 1 x QQE 06/40. VHF Lineaarinen 2 x 4CX350. HF Lineaarinen 1 x GU78B. GU74B - Good, and fine in QRO Amp, too Time Owned: 6 to 12 months. Having seen a review of the GU74B - mentioned a QRO, The GU74B works well in the QRO. Measure the screen voltage starting @ -150v (Control Grid Voltage) and the screen voltage is fine. Conditioning GU74b / 4CX800A transmitting tubes before installation April 2012 Many common amplifiers, e.g the Alpha 91B and the Acom 1000, use ...Mar 26, 2020 - DC9DZ: Project Katana 12K 3PHS - Power Amplifier (PA) using two GU78b. Mar 26, 2020 - DC9DZ: Project Katana 12K 3PHS - Power Amplifier (PA) using two GU78b. Pinterest. Today. Explore. When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with ...GU78b/4cx2500 144 MHz > 4000 Watts 20 - 21 dB 70% linear mode 220-240 Volt 19 x 17 x 11 Inch 54 Kg: Heater and High Voltage both "soft" start; GU78B 78: Electronintorg Q~ GU78B.pdf (228055 bytes) GU8 Marconi R° GU8.pdf (128884 bytes) GU80 80 Soviet P~ GU80.pdf (120251 bytes) (ru) GU81M ... • Tube: Single GU78B with forced air cooling(200m3/h) • Primary Power: 220-240 V AC, 50-60 Hz, single phase, 150VA. • Secondary HV Power Supply: 220-240V or 400v AC, 50-60 Hz, btn 2 phase, 4500VA. (ME3000-S)The HV supply is option. • Complies with CE safety and electromagnetic compatibility requirements.DX Engineering GU74B/4CX800A Ceramic Power Tetrodes are high performance ceramic/metal tetrodes with a plate dissipation rating of 800 watts.The performance characteristics of the 4CX800A allow its use as a high gain grid-driven RF amplifier or as used in grounded grid service. These NOS (new old stock) tubes are direct replacements for use in ...Socket for GU78B tetrode. $100. GU84b tetrode. $450. Socket for GU84B . $50. PENTODES. GU46 pentode (exclusively linear tube) 800-1000W, similar to 4-1000A or QB5/1750 HF Lineaarinen 1 x Siemens RS1072C. HF Lineaarinen 1 x Eimac 4-1000A. HF Lineaarinen 1 x Eimac 3CX5000. HF Lineaarinen 2 ja 3 x RS1002. VHF Lineaarinen 1 x QQE 06/40. VHF Lineaarinen 2 x 4CX350. HF Lineaarinen 1 x GU78B. The amp was now fitted with a GU84B instead of the original GU78B tube (my request to receive the altered specifications of the amp, stays unanswered til today). So-called reason for the change of tube was that the manufacturer had many quality problems with the GU78B (quote manufacturer: 'We have changed to this tube for exactly the reason ...が建てられており、シャックにはリニアアンプと、gu78b gu84b gu74b fu727f と いった送信管が並べれておりました。 imd 等を重視するとすれば fu727f(パワーが出る中華球)よりも imd が比較的 良好なロシア球 (gu78b) が良いのですかね ? 情報交換したいです。 Datasheet. Description. GTM CORPORATION. GU8 0N03. 331Kb / 5P. N-CHANNEL ENHANCEMENT MODE POWER MOSFET. GU8 5L02. 278Kb / 5P. N-CHANNEL ENHANCEMENT MODE POWER MOSFET.This amplifier is designed around the low cost Russian GS35B triode, and features: 1.5KW output using grounded grid circuitry with about 100 Watts drive. A commercial (expensive) tube socket is not required. Easy to fabricate low cost air system chimney. Fast vacuum relay T/R switching.It has its original 4CX800 tube that still puts out full power on all bands (I have a tested NOS spare tube available for purchase) 4cx800 4cx800a Gu-74b Gu74b - See Price Gu-74b Gu74b 4cx-800 4cx800 Tube Socket And Plenum - Rare And Hard To Find The first Svetlana 4CX800 data sheet stated that this tube is the same as the GU74 widely used in the Eastern Europe De plus il.Category: Electron Tubes. Time Owned: 6 to 12 months. I have a GU-78B tube in my PA. After 1000 hours of work, a short circuit occurred between the first grid and the cathode. This happens when the GU-78B heats up. "Treatment" was applied. Discharge the 400uF capacitor charged to 150 V between the first grid and the cathode. GU78b/4cx2500 144 MHz > 4000 Watts 20 - 21 dB 70% linear mode 220-240 Volt 19 x 17 x 11 Inch 54 Kg: Heater and High Voltage both "soft" start; Data of DRESSLER Katana-7K RF Linear Amplifier. no relais switching under power conditions, soft start inrush, 240 sec delay time for full power, turbine blower with 2 speeds. Well regulated screen and grid supply for +ve and -ve currents as well as current limiting to protect the tube and minimize the IMD.GU78B (GU-78B) Svetlana Socket with Chimney $174.50: HIGH VOLTAGE CAPACITOR 60.0uF/4000V New $119.50: [email protected] KV Doorknob Capacitors.Brand New. Lot of 2 $24.50: GU78b. Alt hvad der angår modtager, sender og perifer enheder. 1 post • Page 1 of 1. oz7c Posts: 1279 Joined: Sun Feb 04, 2018 2:30. GU78b. Post by oz7c » Fri Mar 23, 2018 18:38. Hej Test af GU78b/74b/84b Svetlana Der er følgende du skal prøve Tag ... が建てられており、シャックにはリニアアンプと、gu78b gu84b gu74b fu727f と いった送信管が並べれておりました。 imd 等を重視するとすれば fu727f(パワーが出る中華球)よりも imd が比較的 良好なロシア球 (gu78b) が良いのですかね ? 情報交換したいです。Russian Tube shortage GU84b ,GU78b GU74b This is Howard VE2AED , I have been fortunate to find a great person in the Ukraine who stocks impossible to get Russian tubes for some of the more popular OM Power and various other HF amplifiers .Tube numbers include the GU84b GU78b and GU74b . I have purchased in the last month a few tubes for myself ... New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... Read more about the condition New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging ...GU78b. Alt hvad der angår modtager, sender og perifer enheder. 1 post • Page 1 of 1. oz7c Posts: 1279 Joined: Sun Feb 04, 2018 2:30. GU78b. Post by oz7c » Fri Mar 23, 2018 18:38. Hej Test af GU78b/74b/84b Svetlana Der er følgende du skal prøve Tag ... Linear Amplifiers for Amateur Radio,Power Amplifier for 144 MHz,KW amateur amplifiers,gs23b,gu74b,gu78b REPAIR ALL AMPLIFIER ALL POWER repaire all amplifier tube or transistor This 1 w 100 kW Related pages: TOF Amplifier Tuning Aid Frequency range: 26-30 MHz Palomar 200X Linear Amplifier #Radio If you're still in two minds about hf linear ...Popis. Elektronka GU74B. Číst dál. Zobrazí dobu potřebnou pro zajištění většího množství produktu, než je skladem. Kód. Hmotnost [kg] Stav skladu. Cena. ACGU74B. Popis. Elektronka GU74B. Číst dál. Zobrazí dobu potřebnou pro zajištění většího množství produktu, než je skladem. Kód. Hmotnost [kg] Stav skladu. Cena. ACGU74B. The Emtron amps will take these though as heater voltage tap is provided but output will be down by about 25%. There are 3 types of FU728F's, easy to know what version to buy, lots of information about them. Current production (2016) are robust and reliable, the others, take your chances. VK6WB. Rating: 2015-01-14.The gu78b tube in the om3501a or in 3501 is again produced , the latest I saw on the market was 2016, affordable. The anode cooler surface is greater than the gu84b, less air obstruction also. The output is by specs 2,5kW 24/24 7/7 , It will handle the 3,5 kW output in ICAS, all within the specs as anode voltage/current/sreen and grid current. Jul 26, 2009 · Modification of an RFD-1A (TMC) Linear Amplifier. PL-8295 has been replaced with GU-78B to increase power. Click to Enlarge. Typical Operating Characteristics. Output power: 3.8KW (with 100w input ) Plate voltage:3300v. Plate current:1.8A. screen voltage:360v. screen current: 20mA. The Emtron amps will take these though as heater voltage tap is provided but output will be down by about 25%. There are 3 types of FU728F's, easy to know what version to buy, lots of information about them. Current production (2016) are robust and reliable, the others, take your chances. VK6WB. Rating: 2015-01-14.Dec 04, 2014 · GU78b Ceramic tetrode: Cooler: Centrifugal blower + axial blower: Power supply: 2 x 230 V – 50 Hz one or two phases: Transformers: 2 pcs of toroidal transformer 2.5 kVA: Protection circuits: – SWR too high – Anode current too high – Screen current too high – Grid current too high – Mistuning of power amplifier – Hot switching ... GU-78B / GU78B / GU78-B HAM tetrode tube Vacuum tubes, Capacitors, Nixie Tubes, Indicators, VFD display, LED, Sockets. Wholesale & retail trade. Worldwide shipping.for 50 MHz amateur bands from 50 till 52 MHz and all modes With GU78B ceramic tetrode tub.. Add to Cart. OM Power OM-4001HF - Heavy Duty Legal Limit Manual Tune Amplifier. 160 - 10 m. Full QSK-ready. The 4000 W output OM4001HF linear amplifier is designed ... Long Island Teacher Competing On New Season Of 'Survivor' - Long Beach, NY - The fourth-grade teacher says he's competing in the show to win money, and maybe make people smile along the way.Dec 04, 2014 · GU78b Ceramic tetrode: Cooler: Centrifugal blower + axial blower: Power supply: 2 x 230 V – 50 Hz one or two phases: Transformers: 2 pcs of toroidal transformer 2.5 kVA: Protection circuits: – SWR too high – Anode current too high – Screen current too high – Grid current too high – Mistuning of power amplifier – Hot switching ... GU78b/4cx2500 144 MHz > 4000 Watts 20 - 21 dB 70% linear mode 220-240 Volt 19 x 17 x 11 Inch 54 Kg: Heater and High Voltage both "soft" start; High Voltage delay timer: HV cannot turn on before the tube is ready Cannot apply drive without HV: PA kept in STDBY (No operation is possible without HV)Popis. Elektronka GU74B. Číst dál. Zobrazí dobu potřebnou pro zajištění většího množství produktu, než je skladem. Kód. Hmotnost [kg] Stav skladu. Cena. ACGU74B. Russian Tube shortage GU84b ,GU78b GU74b This is Howard VE2AED , I have been fortunate to find a great person in the Ukraine who stocks impossible to get Russian tubes for some of the more popular OM Power and various other HF amplifiers .Tube numbers include the GU84b GU78b and GU74b . I have purchased in the last month a few tubes for myself ...Search result for PCL84 GU78b. Search for component: sample: 13LO37i : Multiple search: sample: 6N1P-EV 6H2nEB 6N3P DR ECL82 EF 80 EL-34: Tips: GU78B tetrode: Maxon; Pix Doc Mod Model Band/QRG Max P/O Quicknote; CA-1461: 136-172 MHz: 25 W: CA-1462: 440-512 MHz: 20 W: Microset; Pix Doc Mod Model Band/QRG Max P/O Quicknote; SR200: 2 m: 200 W-Microwave Modules ; Pix Doc Mod Model Band/QRG Max P/O Qu ... The GU-78B tetrode is used for power amplification in distributed amplifiers and single-sideband signal amplifiers at frequencies up to 250 MHz, in RF industrial engineering equipment. 10. Sep. 2010. PANICK V - New 5kW Power Amplifier for 2 m band with 2 x 3CPX1500A7. 01. Jun. 2010. My new article "Printed Omni Directional Wi-Fi Antenna for 5.6 GHz " published in USA magazine "antenneX", June 2010, Issue No.158.The GS35b needs a minimum of 85CFM airflow, the blower fitted from new had a rating of 30.5 litres per second, now that sounds good, but when converting 30.5LPS to CFM, it turns out to be 64.6CFM, that's around 20CFM short of minimum! Note: These under cooling issues are concerned with the 2005 model amplifier, but it was interesting to see ...10. Sep. 2010. PANICK V - New 5kW Power Amplifier for 2 m band with 2 x 3CPX1500A7. 01. Jun. 2010. My new article "Printed Omni Directional Wi-Fi Antenna for 5.6 GHz " published in USA magazine "antenneX", June 2010, Issue No.158.Name: GU78B: Type: tetrode: Cathode type: oxide,indirect heating: Application field: power amplification in distributed amplifier and amplification of SSB signals up to 1.5kW up to 75MH GU74B - Good, and fine in QRO Amp, too Time Owned: 6 to 12 months. Having seen a review of the GU74B - mentioned a QRO, The GU74B works well in the QRO. Measure the screen voltage starting @ -150v (Control Grid Voltage) and the screen voltage is fine. Conditioning GU74b / 4CX800A transmitting tubes before installation April 2012 Many common amplifiers, e.g the Alpha 91B and the Acom 1000, use ...NOS Tube tested in OM3500 PA. Tube nr1tous droits réservés (copyright) f1frv. reponses a vos questions techniques. transformateurs ht qro / qro hv transformers . kit for decametric amplifier with gs-35b in 6u rack The voltage for a GU78b tube is about 96V and every volt means the cathode current change about 40-80 miliampers. Therefore the regulator is permanently under the current for better voltage stability. The tube the maximal G1 voltage should be observed while blocking it for RX so the tube does not get damaged. The voltage for a GU78b tube is about 96V and every volt means the cathode current change about 40-80 miliampers. Therefore the regulator is permanently under the current for better voltage stability. The tube the maximal G1 voltage should be observed while blocking it for RX so the tube does not get damaged. tous droits réservés (copyright) f1frv. reponses a vos questions techniques. transformateurs ht qro / qro hv transformers . kit for decametric amplifier with gs-35b in 6u rack GU78B GU74B ( MP ) C - sold 4CX3000a Amp. Parts TUBES ( only a few left ) 3cpx1500a7 / 3cx800a7. 3cx3000a7 . 3cpx800a7 ... The Russian generator tetrode GU-78B is designed to amplify high-frequency oscillations at frequencies up to 250 MHz with an output power of at least 2.5 kW. GU-78B is used for power amplification in amplifiers with distributed amplification and single-sideband signal. GU78B tetrode: Maxon; Pix Doc Mod Model Band/QRG Max P/O Quicknote; CA-1461: 136-172 MHz: 25 W: CA-1462: 440-512 MHz: 20 W: Microset; Pix Doc Mod Model Band/QRG Max P/O Quicknote; SR200: 2 m: 200 W-Microwave Modules ; Pix Doc Mod Model Band/QRG Max P/O Qu ... GU74B - Good, and fine in QRO Amp, too Time Owned: 6 to 12 months. Having seen a review of the GU74B - mentioned a QRO, The GU74B works well in the QRO. Measure the screen voltage starting @ -150v (Control Grid Voltage) and the screen voltage is fine. Conditioning GU74b / 4CX800A transmitting tubes before installation April 2012 Many common amplifiers, e.g the Alpha 91B and the Acom 1000, use ...Socket for GU78B tetrode. $100. GU84b tetrode. $450. Socket for GU84B . $50. PENTODES. GU46 pentode (exclusively linear tube) 800-1000W, similar to 4-1000A or QB5/1750 General description and the advantages of the OM3006+ Amplifier. The linear amplifier OM3006+ is designed for 50 MHz amateur bands from 50 till 52 MHz and all modes. It is fitted with a ceramic tetrode GU78b. In addition, this amplifier can be equipped with enhanced IO box and can therefore be remotely controlled, thanks to LAN port and adapted ...Find many great new & used options and get the best deals for GU-78B, ГУ-78Б 4CX3000 Svetlana Tetrode TUBE NOS at the best online prices at eBay! Free shipping for many products!gu70l02 datasheet n-channel enhancement mode power mosfet - gtm corporation gu70n03 3-terminal positive voltage regulatorsQuick links. Clubs and societies that I belong to. Radio friends with websites. Ham software, DXcluster and digimodes - computers-in-ham-radio. Construction and electronics including K2, K3 and QRP - constructor's assistance. QRO amplifiers, circuits and components - especially those using the GS35b. Contesting and operating - tips.The GU-78B tetrode is used for power amplification in distributed amplifiers and single-sideband signal amplifiers at frequencies up to 250 MHz, in RF industrial engineering equipment. Lineární zesilova č s GU78b pro 1,8 – 30MHz s výstupním výkonem 3kW ++ Po více než roce práce se poda řilo úsp ěšn ě dokon čit nový dosp ělý PA pro KV osazený elektronkou GU78b. . PA má za sebou cca 50h závodního provozu, snad se již poda řilo vychytat všechny mouchy. Po instalaci nové chladící turbíny PAPS 270m3 ... Category: Electron Tubes. Time Owned: 6 to 12 months. I have a GU-78B tube in my PA. After 1000 hours of work, a short circuit occurred between the first grid and the cathode. This happens when the GU-78B heats up. "Treatment" was applied. Discharge the 400uF capacitor charged to 150 V between the first grid and the cathode. Datasheet. Description. GTM CORPORATION. GU8 0N03. 331Kb / 5P. N-CHANNEL ENHANCEMENT MODE POWER MOSFET. GU8 5L02. 278Kb / 5P. N-CHANNEL ENHANCEMENT MODE POWER MOSFET.The Emtron amps will take these though as heater voltage tap is provided but output will be down by about 25%. There are 3 types of FU728F's, easy to know what version to buy, lots of information about them. Current production (2016) are robust and reliable, the others, take your chances. VK6WB. Rating: 2015-01-14.Socket for GU78B tetrode. $100. GU84b tetrode. $450. Socket for GU84B . $50. PENTODES. GU46 pentode (exclusively linear tube) 800-1000W, similar to 4-1000A or QB5/1750 The amp was now fitted with a GU84B instead of the original GU78B tube (my request to receive the altered specifications of the amp, stays unanswered til today). So-called reason for the change of tube was that the manufacturer had many quality problems with the GU78B (quote manufacturer: 'We have changed to this tube for exactly the reason ...The voltage for a GU78b tube is about 96V and every volt means the cathode current change about 40-80 miliampers. Therefore the regulator is permanently under the current for better voltage stability. The tube the maximal G1 voltage should be observed while blocking it for RX so the tube does not get damaged. Specifications. Сomments. Amplifier builded on top of GU-74B tube, which is used in wideband nontunable amplifiers and for single-sideband power. amplification in stationary and mobile RF equipment. It is useful at full ratings through 250MHz. The GU-74b tube is generally considered to be similar to the 4CX800A,GU78B 78: Electronintorg Q~ GU78B.pdf (228055 bytes) GU8 Marconi R° GU8.pdf (128884 bytes) GU80 80 Soviet P~ GU80.pdf (120251 bytes) (ru) GU81M 81: Electronintorg P~ GU81M.pdf (236700 bytes) GU81M 81: Soviet P~ GU81M.pdf (335864 bytes) (ru) GU81 81 Lamina P~Output network. Inductor: 20 uH, Caps: 250 pF var. + 390 pF fixed / 1000 pF var. + 1 nF fixed. Computer control. Plate current (every 5 msec), SWR, all switching functions, no relais switching under power conditions, soft start inrush, 240 sec delay time for full power, turbine blower with 2 speeds. Well regulated screen and grid supply for +ve ... GU-78B / GU78B / GU78-B HAM tetrode tube Vacuum tubes, Capacitors, Nixie Tubes, Indicators, VFD display, LED, Sockets. Wholesale & retail trade. Worldwide shipping.Save gu78b to get e-mail alerts and updates on your eBay Feed. Update your shipping location Shop on eBay. Brand New. $20.00. or Best Offer ... Search result for GU78b GU84b. Search for component: sample: rc-24b GU-39b : Multiple search: sample: 6N1P-EV 6H2nEB 6N3P DR ECL82 EF 80 EL-34: Tips: - mouse placing on the Factory logo - gives Factory Name. 6H30n - click on the name gives Photo. - select all suit sockets.Jun 24, 2022 · AMPHF - Russian Tube shortage GU84b ,GU78b GU74b This is Howard VE2AED , I have been fortunate to find a great person in the Ukraine who stocks impossible to get Russian tubes for some of the more popular OM Power and various other HF amplifiers .Tube numbers include the GU84b GU78b and GU74b . The amp was now fitted with a GU84B instead of the original GU78B tube (my request to receive the altered specifications of the amp, stays unanswered til today). So-called reason for the change of tube was that the manufacturer had many quality problems with the GU78B (quote manufacturer: 'We have changed to this tube for exactly the reason ...Find many great new & used options and get the best deals for GU-78B, ГУ-78Б 4CX3000 Svetlana Tetrode TUBE NOS at the best online prices at eBay! Free shipping for many products! LY1DQ ham radio resources [email protected] Created by LY3NML The GU-74B tetrode is used in wideband non-tunable amplifiers and for single-sideband powerGU78B GU74B ( MP ) C - sold 4CX3000a Amp. Parts TUBES ( only a few left ) 3cpx1500a7 / 3cx800a7. 3cx3000a7 . 3cpx800a7 ... GU78B Tube. $565. Socket for GU78B tetrode. $100. GU84b tetrode. $450. Socket for GU84B . $50. PENTODES. GU46 pentode (exclusively linear tube) 800-1000W, similar to 4-1000A or QB5/1750 See picture of power amplifier with this tube. $60 . GK71 Pentode - $30 sockets - SOLDSearch result for PCL84 GU78b. Search for component: sample: 13LO37i : Multiple search: sample: 6N1P-EV 6H2nEB 6N3P DR ECL82 EF 80 EL-34: Tips: GU78B 78: Electronintorg Q~ GU78B.pdf (228055 bytes) GU8 Marconi R° GU8.pdf (128884 bytes) GU80 80 Soviet P~ GU80.pdf (120251 bytes) (ru) GU81M ... This conversion and pictures are a guideline. There are lethal voltage inside this amplifier, skills how to work safe is needed. Conversion time : demounting gu84b socket/blower : 1.5 h. demounting gu84b socket and mounting gu78b chimney: 3 h. mouting new socket/blower in the amplifier chassis: 1 h. May 05, 2022 · Type: tetrode. Tube is NEW, NOS and never used before! Mutual conductance: 40 to 80 mA/V. Application field: power amplification in distributed amplifier and amplification of SSB signals up to 1.5kW up to 75MH. Find many great new & used options and get the best deals for GU-78B, ГУ-78Б 4CX3000 Svetlana Tetrode TUBE NOS at the best online prices at eBay! Free shipping for many products! It is impossible to override the screen and grid dissipation at any working conditions. Metering. Output, SWR, Plate current, Plate voltage, Screen & Grid current / voltage. Housing. High quality black eloxial aluminia. Dimension. 420w x 155h x 480d mm³. Weight.About 2m GU-78b 4 kW Amplifier The resource is currently listed in dxzone.com in a single category. The main category is Amateur linear amplifiers that is about VHF linear amplifiers. This link is listed in our web site directory since Wednesday Jul 21 2010, and till today "2m GU-78b 4 kW Amplifier" has been followed for a total of 1345 times.So far received 1 votes for a total score of 10.00/10GU78B ceramic tetrode: Cooler: Centrifugal blower + Axial blower: Response speed of AUTO tune: less than 0,5s within same BAND, less than 2s if out of BAND: Power supply: switchable voltages - 220/230/240V for 50Hz or 230/240/250V for 60Hz (or other primary voltages e.g. 200V 50/60Hz for Japan) Transformers: 2 pcs of toroidal transformer 3kVA ... Title: GU78B Author: Electronintorg Subject: JA-2003-01-18 Created Date: 12/13/2002 5:42:49 PM Preis - Socket with Teflon Chimney for the Tube GU-78B GU78B GU78 MILLITARY QRO. Avg: EUR 120,00, Low: EUR 120,00, High: EUR 120,00. Good quality and value when compared to PicClick similar items. Close. Verkäufer - 2.545+ artikel verkauft. 0% negativ bewertungen. Contribute. to QRZ. W8BBX USA. Login is required for additional detail. Email: Login required to view. XML Subscriber Lookups: 11260.Date: Sun, 28 Oct 2012 13:49:57 +1030 From: "Leigh Turner" <[email protected]> To: <[email protected]> Cc: [email protected] Subject: Re: [Amps] The GU84B and GU78B tubes / some brief history George, comparing Tx triodes with tetrodes is akin to comparing apples with oranges, so things must be put into proper context. The GU-78B tetrode is used for power amplification in distributed amplifiers and single-sideband signal amplifiers at frequencies up to 250 MHz, in RF industrial engineering equipment. DX Engineering GU74B/4CX800A Ceramic Power Tetrodes are high performance ceramic/metal tetrodes with a plate dissipation rating of 800 watts.The performance characteristics of the 4CX800A allow its use as a high gain grid-driven RF amplifier or as used in grounded grid service. These NOS (new old stock) tubes are direct replacements for use in ...gu70l02 datasheet n-channel enhancement mode power mosfet - gtm corporation gu70n03 3-terminal positive voltage regulatorsSearch result for GU78b GU84b. Search for component: sample: rc-24b GU-39b : Multiple search: sample: 6N1P-EV 6H2nEB 6N3P DR ECL82 EF 80 EL-34: Tips: - mouse placing on the Factory logo - gives Factory Name. 6H30n - click on the name gives Photo. - select all suit sockets.Modification of an RFD-1A (TMC) Linear Amplifier. PL-8295 has been replaced with GU-78B to increase power. Click to Enlarge. Typical Operating Characteristics. Output power: 3.8KW (with 100w input ) Plate voltage:3300v. Plate current:1.8A. screen voltage:360v. screen current: 20mA.Tube: GU78B ceramic tetrode Cooler: Centrifugal blower + Axial blower Power supply: switchable voltages - 220/230/240V for 50Hz or 230/240/250V for 60Hz (or other primary voltages e.g. 200V 50/60Hz for Japan) Transformers: 2 pcs of toroidal transformer 2.5 kVA Parameters: 485 x 200 x 455mm (width x height x depth) Weight: 32 kg General description and the advantages of the OM3006+ Amplifier. The linear amplifier OM3006+ is designed for 50 MHz amateur bands from 50 till 52 MHz and all modes. It is fitted with a ceramic tetrode GU78b. In addition, this amplifier can be equipped with enhanced IO box and can therefore be remotely controlled, thanks to LAN port and adapted ...these are immensely successful products for slovakian company om power, and also previously for emtron who had used the gu84b and gu78b tubes before changing to the chinese fu728f tube in recent years because of the inflated price escalation of the large russian tetrodes as they became popular and keynesian supply/demand economics took over by … With GU78B tube.... As our club is very active in VHF/UHF contests there has always been a need of a reliable high-power PA for 2m band. Although the current power limit in OK is just 750 W, we decided to construct a brand new PA with a big margin of power which would last "forever" and can be possibly used for EME as well. Name: GU78B: Type: tetrode: Cathode type: oxide,indirect heating: Application field: power amplification in distributed amplifier and amplification of SSB signals up to 1.5kW up to 75MH United States. is. 19. days. The GU-78B tetrode is used for power amplification in distributed amplifiers and single-sideband signal amplifiers at frequencies up to 250 MHz, in RF industrial engineering equipment. Tube is NEW, NOS and never used before! Name: GU78B; Type: tetrode; Cathode type: oxide, indirect heating;GU78B (GU-78B) Svetlana Socket with Chimney $174.50: HIGH VOLTAGE CAPACITOR 60.0uF/4000V New $119.50: [email protected] KV Doorknob Capacitors.Brand New. Lot of 2 $24.50: GI-7BT (GI-7B/GI7B,Tropical) Tube. New in Box. $35.50: GS-35B (GS35B,GS35) 2500 W triode. NEW IN BOX $124.50: 25ohm/50W StripLines Resistors.Lot of 2pcs $15.50: Vacuum Variable Cap.20 ...Add to Cart. 4CX350FJ-8904 JAN Amperex Transmitting Tube (NOS/NIB) The 4CX350FJ / 8904 is intended for Class AB linear RF amplifier service. The tube has rugged internal construction features. The 4CX350FJ/8904 may be used as an exact replacement for the 4CX350F/8322 in most linear applications, requiring only minor circuit adjustment and retuning. GU-78B / GU78B / GU78-B HAM tetrode tube for 50 MHz amateur bands from 50 till 52 MHz and all modes With GU78B ceramic tetrode tub.. Add to Cart. OM Power OM-4001HF - Heavy Duty Legal Limit Manual Tune Amplifier. 160 - 10 m. Full QSK-ready. The 4000 W output OM4001HF linear amplifier is designed ... Save gu78b to get e-mail alerts and updates on your eBay Feed. Update your shipping location Shop on eBay. Brand New. $20.00. or Best Offer ... GS35b 6m Amplifier. Here are some pictures of my GS35b amplifier for 6 meters I built back in 2005. 90W drive delivers about 1500W output. This amplifier was designed to run 24/7 key down for heavy contesting and high duty cycle WSJT modes. The output network is a Pi-L to suppress the second harmonic and a T-network is used for the input. K0LWC USA. Login is required for additional detail. QSL: QRZ, LOTW, EQSL, DIRECT Email: Login required to view XML Subscriber Lookups: 103212Datasheet. Description. GTM CORPORATION. GU8 0N03. 331Kb / 5P. N-CHANNEL ENHANCEMENT MODE POWER MOSFET. GU8 5L02. 278Kb / 5P. N-CHANNEL ENHANCEMENT MODE POWER MOSFET.GU78b. Alt hvad der angår modtager, sender og perifer enheder. 1 post • Page 1 of 1. oz7c Posts: 1279 Joined: Sun Feb 04, 2018 2:30. GU78b. Post by oz7c » Fri Mar 23, 2018 18:38. Hej Test af GU78b/74b/84b Svetlana Der er følgende du skal prøve Tag ... gu70l02 datasheet n-channel enhancement mode power mosfet - gtm corporation gu70n03 3-terminal positive voltage regulatorsAntenna switch OM SW 1/10. Shortwave plus 50 MHz Antenna Switch OM SW 1/10 designed to cooperate with OM Power automatic power amplifiers OM2200A, OM2500A and OM4000A. Of c.. Price Ex VAT: 355.00€. Jun 24, 2022 · AMPHF - Russian Tube shortage GU84b ,GU78b GU74b This is Howard VE2AED , I have been fortunate to find a great person in the Ukraine who stocks impossible to get Russian tubes for some of the more popular OM Power and various other HF amplifiers .Tube numbers include the GU84b GU78b and GU74b . Dec 04, 2014 · GU78b Ceramic tetrode: Cooler: Centrifugal blower + axial blower: Power supply: 2 x 230 V – 50 Hz one or two phases: Transformers: 2 pcs of toroidal transformer 2.5 kVA: Protection circuits: – SWR too high – Anode current too high – Screen current too high – Grid current too high – Mistuning of power amplifier – Hot switching ... GU78B 78: Electronintorg Q~ GU78B.pdf (228055 bytes) GU8 Marconi R° GU8.pdf (128884 bytes) GU80 80 Soviet P~ GU80.pdf (120251 bytes) (ru) GU81M ... NEW gu-78b tube. Condition: New. Quantity: 1 available / 1 sold. Price: US $750.00. $34 for 24 months with PayPal Credit *. The Russian generator tetrode GU-78B is designed to amplify high-frequency oscillations at frequencies up to 250 MHz with an output power of at least 2.5 kW. GU-78B is used for power amplification in amplifiers with distributed amplification and single-sideband signal. This conversion and pictures are a guideline. There are lethal voltage inside this amplifier, skills how to work safe is needed. Conversion time : demounting gu84b socket/blower : 1.5 h. demounting gu84b socket and mounting gu78b chimney: 3 h. mouting new socket/blower in the amplifier chassis: 1 h. NOS Tube tested in OM3500 PA. Tube nr2NOS Tube tested in OM3500 PA. Tube nr1 GU78b. Alt hvad der angår modtager, sender og perifer enheder. 1 post • Page 1 of 1. oz7c Posts: 1279 Joined: Sun Feb 04, 2018 2:30. GU78b. Post by oz7c » Fri Mar 23, 2018 18:38. Hej Test af GU78b/74b/84b Svetlana Der er følgende du skal prøve Tag ... Category: Electron Tubes. Time Owned: 6 to 12 months. I have a GU-78B tube in my PA. After 1000 hours of work, a short circuit occurred between the first grid and the cathode. This happens when the GU-78B heats up. "Treatment" was applied. Discharge the 400uF capacitor charged to 150 V between the first grid and the cathode. Dec 04, 2014 · GU78b Ceramic tetrode: Cooler: Centrifugal blower + axial blower: Power supply: 2 x 230 V – 50 Hz one or two phases: Transformers: 2 pcs of toroidal transformer 2.5 kVA: Protection circuits: – SWR too high – Anode current too high – Screen current too high – Grid current too high – Mistuning of power amplifier – Hot switching ... United States. is. 19. days. The GU-78B tetrode is used for power amplification in distributed amplifiers and single-sideband signal amplifiers at frequencies up to 250 MHz, in RF industrial engineering equipment. Tube is NEW, NOS and never used before! Name: GU78B; Type: tetrode; Cathode type: oxide, indirect heating; xa