Gi7b socket To achieve the horizontal offset, one of the sockets was disassembled and mounted such that the cathode and heater connections are on the left side of the RF section partition. Pre-Owned High-Quality 8Pin Vacuum Tube Socket Octal for KT66 KT88 6SL7 6SN7 6V6 5AR4 Test of the MountainTopElectronics two tube GI7bGreat little russian tubes. This bottom section will mount NOTE: Myriad tests have been conducted regarding the use of this tube for PAs at 23cm. Opens in a new window or tab. 5 to 10 pF. Get the best deals for gi7b socket at eBay. I hat a Drake antenna tuner in this time, so I made the Drake look 馃檪. Radio Communication; Vintage Aug 23, 2013 路 An original socket for the GI7B. This document provides instructions for modifying a Dentron MLA-2500 amplifier to operate with GI7B tubes. I warmed up the tub This change will make wiring the sockets in parallel much easier. In January 2007, I got another tube from Sing, VR2IL. I hope this helps you some. You won't find a better made socket. Working out the cooling and physical mount of the tube were a little challenging, but it works well. W4ZT - Tony King's page Description. Can provide the excellent condition socket & heatsink with it if desired. The triodes also look much easier and cheaper to mount Apr 17, 2010 路 I don't think KA4POZ still has GI7 sockets anymore. Installing the filament transformer and a glitch resistor for fault protection. 42. Transcription . Excerpted from the website description: w4zt, wa4upe, repeater, ham radio, amateur radio,uyless, uyless king, heart gi7b is tube designed for microwaves but working good as hf amplifier idea is to build cheap reliable hf amplifier covering 160 meters band . Temporarily disconnect one leg of the filament transformer. The well-known 4CX250B has almost the same dissipation and power range and needs less drive. com) Related: gi7b tube gi7b socket gi46b tube gi-6b tube. $80/pair for the tubes, $175/pair for tubes & sockets. Tube sockets; Tubes; Tube list Gi7B new (NOS) Reference Art. Radio Communication; Vintage SOCKET for GI7B - $25 GI6B identical to GI7B except rated to 1300MHz instead of 3GHz; use same as GI7B - $20 GU5B 2. I've been building with all three versions, and would be interested in hearing about your builds/setups with these. With the pair of tubes, I start to plan the project, including: GI-7B Socket Built By Bob Briggs, VK3ZL, July 2006 (click on the small pictures to see a larger picture in another browser window) Title: GI7B GI70B Author: Electronintorg Subject: JA-2003-01-16 Created Date: 12/14/2002 7:52:05 PM WD8DAS SB-230 Amplifier Tube Retrofit Project Air-cooled Russian GI-7B triode replaces the conduction-cooled 8873. Apr 23, 2025 路 Russian Gi-7B (袚袠-7袘) is a microwave triode with heat sink, that operates as an oscillator or an amplifier in continuous-wave or pulsed mode with anode modulation in the centimetric and decimetric wavelength ranges. Maybe someday It has been my experience that ALC circuits do not work very well. SOLD . The power output limiting factor mostly is the power transformer. New front panel overlay makes it look like a new amp. Subsequently use some 6 mm² wire (or RG213 etc. 4. I simply made the compartment to fit my 19" rack unit, making sure that the tube, caps and coils would fit and that was it At the same time, I had holes cut in the front panel for the C1 and C2 capacitors, plus the hole I required for the GI7b socket, and for the hot air exhaust. A 144 MHz GI7B Power Amplifier; This construction article appeared in 1987 in Radiotechnika magazine (Hungary). ILS 43. I have no pictures any more from the building phase, but I can show you what I have. > VK6APK > > Exactly! > 73 > Jim W7RY > > > GS23b is another great Russian tube built from quality materials. Last I got were from a VE3 that sells only on Ebayjust search GI7B sockets there. I've seen several done by mounting the tubes horizontal and eliminating the tuned input, but I wanted to retain the input circuitry. After developing a fault I followed advise on the best way to eliminate the fault. I have one here, as does VK6WF. GMI-11 socket . Mar 3, 2017 路 About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Related: gi7b tube gi7b socket gi46b tube gi-6b tube. Heatsink removed, plenty of vent holes all around. Four large holes have been drilled in the support panel to allow for K4POZ and I both make sockets for the GI-7B which are FAR superior (for HF) to the sockets you see on Ebay and at a much lower price. Very high quality. Apr 7, 2023 路 Fitting two gi7b tubes into the SB200 doesn't get you much more output, just not enough B+ current available for more. Mosfet power amplifier schematic upgrade# Mar 23, 2025 路 Weight socket + chimney + clamp for fixing the chimney : 0,410 kg. NOS pair of GI7B tubes with quality sockets & adjustable bias board from K4POZ. This warm up is important to ensure the directly-heated cathodes of the tubes are fully functional. $15 . Cooling: 24 m 3 /hr forced air. We have a great online selection at the lowest prices with Fast & Free shipping on many items! On 20/08/2012 12:53 PM, Alex Gavva wrote: > Hi All, > > If someone came up with a socket, the price of that tube would skyrocket > very quickly and/or supplies would dry up very quickly. The pictures show the short way to implement these changes. Harbach soft-start wired for 120VAC operation 4. NOTE: "low" output due to the 221 VAC mains in my home, anode voltage under load 850V. gi7b tube socket I am working on another Heathkit SB-230 conversion to a GI7b tube. It must have just expried. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright A new transmitting valve from Russia - the Gi7B Mirko Voznjak, YU1AD and Mike King, G3MY Issue 55 Six News, November 1997 Mirko, YU1AD writes: I am writing to give information about a very special Russian-made transmitting valve, named Gi7B (sounds like some special event station from Northern Ireland!). Worldwide shipping. He makes a nice looking socket. One of the original tube-socket holes can re: 8873 in the SB-230 - Hello again, - The big deal about all of this is the Heathkit SB-230 is conduction cooled. $40 ea. Harmonic issues with the OEM socket for this tube family. Having trouble finding a socket for the GI7b, the supplier that I have used in the past seems to be out of business. We have a great online selection at the lowest prices with Fast & Free shipping on many items! gi7b tube socket What is the difference between the GI-7B and the GI-7BT triode tubes? Here's a breakdown of the differences between the GI-7B and GI-7BT triode tubes: GI-7B Cooling: Designed for forced air cooling with a heat sink. This impressive Russian RF power triode is a rebuild of an ultra rare WWII German valve type LD9, and has the same physical size as the earlier German valve. Any ideas? Gary K4MT. Potentially addressing issues with loading on 160M and 80M GI-46b or GI-23b tube socket Kenwood TL-922 & Heathkit SB-220 3-500Z KK4NOZ. Here below you will find some shots of the various stages of assembly and a short video of the final test MLA-2500 GI-7B Tube Sockets using 8875 Holes The first change was to use the original 8875 socket holes. The components previously made to construct the sockets were installed on the plate (see picture). But if you think a bit about sockets, screen voltage supply, high pressure blower - you give up easily. Rest assured, the guy does make them. Shipped free in the USA. He is in VE land and he is a country man of my father's. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Slightly cooling of cathode also should be provided. I also have a pair of his GI7B sockets. K4POZ Legal Limit Home Brew 160-10 Meters Pair of GI-7B's In An L4B Cabinet Title: GI7B Socket Created Date: 2:34:50 PM This is a multi-part message in MIME format. Feb 23, 2012 路 The tube sockets are nice. Quality K4POZ tube socket & bias board 5. Here is the look from this linear. GI7b ( similar to AEG LDa ) also GI70b (same tube - no cooler), Metal-ceramic transmitting triode up to 9 cm. We have a great online selection at the lowest prices with Fast & Free shipping on many items! The GI7b amplifier in its finished state. Switches . gi6b tube Watchlist Expand Watch List. Alex UR4LL for the intention of building amplifier for six meters. Category. Review Summary For : Russian GI-7B; Reviews: 3 MSRP: 32. This is a Yaesu FL-2100 amp, I converted to operate with GI7B tubes, including many improvements. 2 pole 9 throw ceramic switch from . Original tank circuit, new tube and socket, new bulkhead Front view of first picture, with lables added for clarity RF compartment - original tank; new tube socket installed Orignal tank, new RF choke and parasitic choke with tube Cooling box installed New tank coil installed Top-Front view of PA PA bottom, showing cathode wiring Then begin the mechanical difficulties it is indeed the greatest difficulty HF amps are the mechanical strength because of the student temperature, ventilation, vibration we must not forget that there are equal filaments vibration breaks I start with the greatest courage as you know mounts the simplest triodes are a cause of mounting since the first mechanical support lamp is simply a hole HF Amp w/new GI7B Ceramic Tubes. Selected category All. Sockets can be bought from Alex UR4LL here: UR4LL Get the best deals for Gi7bt Tube at eBay. (whatillo@gmail. 21 shipping. They completely contain/cover the tube, nothing left to see than the anode cap. Figure 2 shows the sockets mounted and wired. Luftkanal (chimney) für GI7B und G16B Senderöhre € 15,00; Ähnliche Produkte. Selected category Consumer Electronics. The GI7b amplifier in its finished state. Filter. All. I purchased a nice tube socket / mount from a ham that makes them. I also h GI-7B, GI7B, GI-7BT, GI7BT, Russian, Triode, Tube, Socket, Linear, Amp, Amplifier, Project, HF, VHF, UHF, w4zt, ham radio, amateur radio, uyless, uyless king, tony There are much more advanced tubes than the GI7b. The K4POZ sockets are excellent and can be used with the original chassis. The simplest socket for GI7B - not for sale, how to build. 1100V) 600VA. - open data sheet and curves. My first selfmade linear with one GI7B; My second selfmade linear with two GI7B; My newest selfmade linear with one GS35B; Little Speedy Linear for 11/10m repair; A 30 Watts FET Linear for the Lima; The 50Watt Linear with Bandfilter from KN-Electronic; Repairs and Build Transceivers. Dentron Clipperton QRO Conversion Project Replacing 572B's with GI-7b's by Lawson Summerrow / W4EMF - 3/18/01 MLA-2500 GI-7B Tube Sockets using 8875 Holes The first change was to use the original 8875 socket holes. Another view of the socket. The modifications include: 1. GI7B: Drive: Output: 80 m: 100 W: 480 W w4zt, wa4upe, repeater, ham radio, amateur radio,uyless, uyless king, heart transplant, transplant, tony king, atlanta,gs35b,gs-35b,gi-7b,gi7b,socket,Delta Air Lines When I posted the link, there was the GS35B socket there as well. Drill a hole in the socket compartment and possibly mount a grommet. Among triodes there are surely better (should I say more expensive?) solutions too. This is what I drew and then had cut in aluminium. C $2. To digress a bit, contrary to common perception, there are still lots of microwave electron tubes in use, for example microwave ovens, radars, medical diagnostic equipment and satellites. AA4PG 3/30/2013 [email protected] Page 1 of 14 Finally, with the sockets in this position, there is very little space between the sockets and the plate choke. Tube output w/50w drive: 800w out on 80 & 40m and 550w out on 20m, 600w out on 15 & 10m. com. http://oldcomputer. When I posted the link, there was the GS35B socket there as well. Jul 3, 2021 路 With some expert assistance at hand I am redesigning the valve housing and cooling system as well as upgrading the anode/cathode connection points. Oxide cathode indirectly heated. info/portables/tp560/ code and display a big information about it. The pwr gain is still around 1213 dB or more. Dec 3, 2024 路 GI7b tube you see in the last photo is not for sale! For sale: socket, chimney, four chimney fastenings. Some variants (GI-70B) may not have a heatsink and are intended for different cooling systems. Sep 15, 2023 路 Mountain Top Electronics Single GI-7B/GI-6B amplifier. If you get it, remember to remove bottom small cover, there For sale 10 VHF sockets for GI7B tubes Send this to a friend with an introduction. GI7B und GI6B Röhrensockel + Luftkanal, Angebotspaket € 60,00 Ursprünglicher Preis war: €60,00 € 58,00 Aktueller Preis ist: €58,00. $15 The GI7b (LD7) is also good on 23cm. Ohm out one side of the filament terminal strip to check for continuity to the filament pin on both GI7B sockets. If anyone is interested, i should have the guys email or web site info here somewhere. The GI7B is a Russian triode suitable for operation at 13 and 23 cm, as well as 6 and 2 meters. $20 per pair . They appear to be much easier to cool, by something like an Axial Papst Fan (instead of a Snail Blower). 10PCS 7Pin B7G Tube Socket For EAA91 EC92 6X4 6Z4 6AQ5 EC92 EZ90 Tube AMP DIY Sent: Fri, August 27, 2010 6:49:35 AM Subject: RE: [ham_amplifiers] 3CX400U7 the A7 is the socket to socket replacement , the U7 is a coaxiall tube but with the same specs , I am setup at the moment to build the coaxial socket anyway having needed them for the GI7b tubes , but if someone is in need of the U7 specificaly that is fine :). Heathkit SB-220 from nonsmoking environment converted to use a pair of GI7B tubes. Mar 8, 2023 路 Purchased an operating SB-230 that has a very good and hard to find 8873 tube. Cell Phone The next item I picked up for the project was the socket. - select all suit sockets. May 7, 2022 路 Find great deals on eBay for gi7b socket and gi7b tube. Rear Panel with Fan & Tube Socket GI7BT heater & cathode wiring Rear View; Original PA Input ckt used RF Compartment with GI-7BT air chimney GI7BT Tube in Socket the K4POZ sockets and are offset horizontally and vertically so, in theory, one does not block ventilation for the other. Plans are to convert the amp to a single GI7B tube, so the 8873 is not needed and for sale. Test with 4 × PL-519 and 2 × GI-7B with minor modifications (see schematic) of the original GLA-1000 design. The plate choke is still in its original place but will be moved to make room for the cooling fan. Gi7b shows excesivecathode overheating in case of insuficient cooling. 6H30n - click on the name gives Photo. My eBay Expand My eBay. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Pictures of these sockets installed in a Drake L-4B conversion project are shown below (Details of the L-4B conversion project will be presented when received): Click on picture for zoom During a visit to an HAM exchange exhibition (Radiantistica Expo) I came up with the idea of building an amplifier using the mythical Russian tube Gi7b. Oct 25, 2023 路 GI7B Tubes, nos. Has quality K4POZ socket & bias board, new 12 volt filament transformer with solid-state timer for 90 sec filament warm up, new larger electrolytics in the power supply, new cooling fan and new 12VDC T/R relay & 17ma keying. or Best Offer gi7b socket. NOTE: Myriad tests have been conducted regarding the use of this tube for PAs at 23cm. This product is no longer in stock. 50; Description: HF-VHF-UHF Coaxial Triode. Most of them sample the drive level and create a negative voltage. GI7B, GS31/35B, GI46B & others triodes. The amplifier was designed by Gabor Draskovits, HA1YA, who produces similar amplifiers commercially for export. SOCKET GI7B Último Mensaje RSS EC5E. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright An original socket for the GI7B. 75 | Cal Online Driver Education | CA DMV Accepted. I didn't go for one of the many hand made sockets you can find available these days, not that there's anything wrong with those! It's just I saw this socket on eBay and it was cheap, so I bought it. 3. In grounded-grid style with 3/4-wave coaxial-tank, at a plate potential of 1500V and Ia= 300350mA. Mayor problem was band switch. The tank coil also cut one Turn, now is 3 turns. A 12v fan is mounted underneath blowing upwards and cylinders surround tube anodes to contain airflow. Surplus Sales of Nebrasca was look like good option but unfortunately. In both cases power output was higher than original tubes. I did this as well with the Russian tube on my SB230. 1758. Here are the steps after removing the 8875 sockets. Richard Hughes. He will deal direct outside of his ebay store business. - $80 GU56 good for kW to 40MHz - $90 811 $25 per pair TETRODES: GMI-11 compact tetrode - low height 500W tetrode - tube $90, socket $15 GI-7B Lot of TWO (2) NEW Tube power amplifier QRO HF VHF UHF GI7B. Customers who bought this product also bought: Transformer 550-450-0-450-550 V (max. Wholesale & retail trade. I start at first with one Russian GI7B tube. I finished it in December 2012. This impressive Russian RF power triode, owned by G3GRO, is a rebuild of an ultra rare WWGerman valve type LD and has the same physical size as the . This is a radar amplifier tube designed to operate while pulsing at up to 9 kV and 3 GHz. It appears that the Gi7B and family of Triodes can provide an equally capable solution. OK for HF and for audio as well. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators 5PCS 7Pin B7G Tube Socket For 6X4 6Z4 6AQ5 6J1 EZ90 EF95 6AU6 EAA91 Tube DIY Apr 24, 2024 路 NOS - Set of four Russian GI7B tubes, and sockets. First, remove the bottom section of the K4POZ socket. Cal-Driver-Ed. Get the best deals for gi-6b tube at eBay. Mensajes: 604 #7897 - 7 enero, 2010 23:06 . org/ to learn to drive or ride safely. I thought about building one of the GI7B amps but haven't got enough parts to get it started. New technology parasitic suppressors. And, as with all of my amplifiers, it has been given a name and this one is Piglet. and a small muffin fan running at reduced voltage. Insert some protection against the wire touching Sep 12, 2021 路 Clean SB-200 converted to GI7B tube. Apr 27, 2012 路 According to some Russian Friends that where radio tech's in one in the Army one in the Navy both said you are better off not using the offical socket for the GI7b and all of it's variants if you decide to build in the UHF/VHF spectrum. Brand New. burned out during tune up. the chimney is made of PTFE (t eflon). I tend to build the sockets in my own, so that the tubes are visible, clamped by the contacts, no soldering. The GI-7B tubes were installed and the determination was made to replace the old change over relay with a smaller and faster unit. Freshly gettered and tested. gi7b tube socket. That's how I got my GI7B sockets. Anyone have Related: gi7b tube gi-7bt gi7b socket gi46b tube. New power supply board assembly 2. Hola amigos tengo un pequeño lineal en proyecto con una GI7B, iba a pedir un zocalo Feb 20, 2011 路 linear amplifier (4) gi7b russian tube by W. 2 tubes & sockets $175. SOCKET for tubes gs35b, gs31b, gs1b, gs7b, gi14b, gi39 with chimney | eBay Oct 25, 2023 路 GI7B Tubes, nos. Jan 11, 2022 路 SOLD! Clean, from non-smoking environment, GLA-1000 converted to NOS GI7B tube. com GI-7b / GI7b HF-VHF-UHF power coaxial triode tube (original box) Vacuum tubes, Capacitors, Nixie Tubes, Indicators, VFD display, LED, Sockets. New 12 VDC T/R relay---17ma keying 6. Impreuna cu YO7AOG am purces la construirea de socluri pentru acest tip de tub din materiale care pot fi gasite fara prea mari eforturi: tabla dublu cositorita recuperata din cutii de conserve sau ecranajul de la vechile computere. gi46b tube VC1 to tube socket with heavy (6mm²) wire (left) and coaxcable (center). 5kW on HF) - $110 GU48 kW glass triode. If someone who knows what they are doing has an amp that has the 8874's in it, and they want to change those out and would like to try the gi7b tubes, I will sell you, for my cost, a pair of these gi7b tubes, and a matching set of sockets. ) from the bottom of VC1 to one valve socket. ThinkPad 560 - MCbx. Dentron MLA-2500 GI7B Conversion Procedure w4zt, wa4upe, repeater, ham radio, amateur radio,uyless, uyless king, heart transplant, transplant, tony king, atlanta,gs35b,gs-35b,gi-7b,gi7b,socket,Delta Air Lines 3-500Z Sockets and Filament Choke for Heathkit SB-220 221 Ham Radio Amplifier. C $92. Summary; Recently Viewed; Bids/Offers GI7b Linear This page shown only for historical reasons, the amplifier is no longer in my possesion, but has found a new home at OZ6YM! The saga about my 144 MHz GI7b Linear: In 2000 I acquired a second- (third or fourth) hand job, originally built by HG8UG, bought in DL-land from DG5NFF (I believe) by OZ1BNN last year. Nov 3, 2019 路 Vídeo de Felipe Kolling 7 Pin Amphenol USA Black Phenolic Miniature Tube Socket B7G NOS Shield 147-905. California Driver Ed Online $9. The old 8873 socket was not removed and will be used as a tie strip under the chassis. Einbau LED Orange € 0,95 „DPDT 6“ 2xON/ON Kippschalter 6mm € 0,55; Angebot! 2SC2879 HG 12V 100W HF Transistor Title: GI7B GI70B Author: Electronintorg Subject: JA-2003-01-16 Created Date: 12/14/2002 7:52:05 PM In year 2000, I have purchased a very nice Russian Tube (GI7B) from Dr. Structure: Standard… There are much more advanced tubes than the GI7b. Conversion/upgrades include: 1. Dec 28, 2007 路 GI7B Six Meter Amplifier Project - Update 8 First RF test and found the tune variable capacitor totally meshed out, then I removed few plates and measured the capacitance is in between 4. Nov 29, 2019 路 The socket is installed temporarily to check tube clearance. The socket plate was then mounted to the chassis on ½” metal stand-offs. Very nice sockets! expensive $50 eachbut well worth the cost in my book He custom makes other GI/GS sockets alsoHe does excellent work IMHO Dec 12, 2023 路 NOS GI6B, GI7B, GI9B, and sockets. Introduction: Send Message. Get the best deals for Gi7b Tube Socket at eBay. 5kW triode (3. 21. The LimaSDR selfmade transceiver GENERAL: Cathode: indirectly heated, dispenser, oxide-coated. This bottom section will mount See full list on lavky. Has the following: 1. Tabla Aug 15, 2020 路 GI-7b Radar Amplifier Triode. Start with checking the filament circuit. 2. Then ohm out the other side of the filament terminal strip to check for continuity to the cathode ring on the GI7B socket. With 350w anode dissapation. I mount the tube socked in the holes where the fans were, for a vertical installation. This bottom section will mount Feb 24, 2018 路 The socket question is partly solved, I have a pair of original GS-14 sockets from Lithuania. Cell Phones, Smart Watches & Accessories. GMI-5 socket. The under side from this linear In input circuit of the GI7B tube GS-9B GI-7B GI-6B GI-70B GI-7BT COOLER only GI7B GI6B and many other tubes. > > 73, Alek. Listed under the Technical Reference/Amplifiers/HF Amplifiers category that is about Amateur linear amplifiers. It is possible to derive a stable output of of up to approximately 250W from a single tube GI7B cavity PA, and designs for such PAs can be found on this web site. : Height, mm, at most: with heat sink: 110. Include description. Pentru radioamatorii constructori (care sunt din ce in mai putini) si datorita costurilor relativ mari ale soclurilor pentru GI7B m-am inspirat de la N2GPQ. socket machined duralumin;. The project never starts. GMI-7 socket. MLA-2500 GI-7B Tube Sockets using 8875 Holes The first change was to use the original 8875 socket holes. Well I purchased a pretty run down and abused SB2over the weekend and am considering converting it to If someone who knows what they are doing has an amp that has the 8874's in it, and they want to change those out and would like to try the gi7b tubes, I will sell you, for my cost, a pair of these gi7b tubes, and a matching set of sockets. </P> <P>The person who wants to do this can take a look at what I send them and determine if the Bonjour et 73 voici la description mon amplificateur HF équiper de trois GI7B le projet à débuter en parcourant le web je consulter le cite de yu1aw sans le quelle ce projet n’aura jamais abouti étant électronicien de métier je ne pas connu des lampes les caractéristiques et les petites astuces je ne le connaissais pas. In response to A LOT of emails I get, here is a video explaining how much drive these tubes require. NOS available in abundance. <br> <br> The person who wants to do this can take a look at what I send them and determine if the tubes When I posted the link, there was the GS35B socket there as well. Get the best deals for Gi7b Tube at eBay. 73, Tony W4ZT First, I pulled all of the stuff associated with the 572 tubes and sockets out, except for the tuned input. All Messages By This Member #8164 Being that the SB-230 is a grounded - mouse placing on the Factory logo - gives Factory Name. Even with outstanding cooling, higher powers result in severe thermal drift problems. Optimized tuned inputs, W4ZT bias module, custom K4POZ sockets, sub-chassis micro blowers for the sockets, new GI7B triodes, calibrated multimeter, HV interrupter, current protected cathodes, lv doubler for controls, glitch protection in the plate circuit. 95. We have a great online selection at the lowest prices with Fast & Free shipping on many items! A pair of Gi-7B tubes are wired underneath similar to Fritz, PA0FRI. Aug 8, 2008 路 small labs f5mag rf concept gi7b 1500 w Dec 3, 2024 路 GI7b tube you see in the last photo is not for sale! For sale: socket, chimney, four chimney fastenings. The other obvious advantage is not having to deal with Screen voltage, regulation and protection. A tube replacement of the same type is a lot less work. ILS 79. In order to install a rigid air dam for cooling, the plate choke must be Title. An original socket for the GI7B. This has nothing to do with the Disney movies, i decided on Piglet as I consider the amp to be the daughter of my GS35b amplifier that acquired the name 'The Pig', the reasons for that can be found elsewhere on my web site. the chimney is made of PTFE (teflon). Quiet power switching relay prevents ON/OFF switch failure. thanks to MM0IMC for some Great info and suggestions. Diode protection on meter & LED meter lamp 7. http://www. 811 Ceramic Socket. The only other ones I have seen are by K4POZ. Envelope: metal-ceramic. 5 Feb 11, 2017 路 About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Oct 24, 2016 路 About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright I guess I will have to order the GI7B tube and socket. Replacing the capacitor board to make room for a 12V filament transformer while using low-profile capacitors. gho njzhfe dmvdl ghdl xlfk ujddiszu hold pwjwi rzsur noll