Gi7b tube socket.

Gi7b tube socket ) from the bottom of VC1 to one valve socket. I tend to build the sockets in my own, so that the tubes are visible, clamped by the contacts, no soldering. Helpful details: GI-7B Amplifier Schematic: 2-tube GI7B-HF-Amplifier Schematic GI7B und GI6B Röhrensockel + Luftkanal, Angebotspaket € 60,00 Ursprünglicher Preis war: €60,00 € 58,00 Aktueller Preis ist: €58,00. The owner told me the octal tubes / sockets were looser than a goose. Seller's other items Seller's other items. The net filter on the 220V side. Rear view. com) First, I pulled all of the stuff associated with the 572 tubes and sockets out, except for the tuned input. gi7b tube socket. 500 W. 00 WD8DAS SB-230 Amplifier Tube Retrofit Project Air-cooled Russian GI-7B triode replaces the conduction-cooled 8873. The second half of the article is a 4CX250B amplifier for 432 MHz. Potentially addressing issues with loading on 160M and 80M A pair of Gi-7B tubes are wired underneath similar to Fritz, PA0FRI. $12. The tubes GI6b, GI7b, GI7bt, GI70b and GI70bt are all the same MLA-2500 GI-7B Tube Sockets using 8875 Holes The first change was to use the original 8875 socket holes. After Tony passed away Ron K4POZ kept selling tube sockets and bias boards that Tony designed. 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,&nbsp;for my cost, a pair of these gi7b tubes, and a matching set of sockets. The PI-Filter hat two switchable coils, because the roller induct-or was to small. Top view. 2 GI7B tubes reguire 2500V @ . We have a great online selection at the lowest prices with Fast & Free shipping on many items! 12PCS 7pin Tube The tubes GI6b, GI7b, GI7bt, GI70b and GI70bt are all the same GI7b (=LD7). 80 m. 39 Ohm resistor to adjust heater voltage! GS-9B GI-7B GI-6B GI-70B GI-7BT COOLER only GI7B GI6B and many other tubes. One of the original tube-socket holes can be enlarged a bit so this can be done without too much metal work. Get the best deals for Gi7b Tube Socket at eBay. Selected category Consumer Electronics. Has the following: 1. socket machined duralumin;. </P> <P>The person who wants to do this can take a look at what I send them&nbsp;and determine if the Mike, GØIMG and I are both using the Gi7B tube on 50MHz. Base similar to GU43b. Year of production: 1975. 90. 62. 80 W Aug 8, 2008 · small labs f5mag rf concept gi7b 1500 w Mar 23, 2025 · For sale: socket, chimney, clamp for fixing the chimney. Include description. The only other ones I have seen are by K4POZ. The cylinders are from rainwater down pipe and split for easy removal/fitting. 5kV. Jan 8, 2022 · The amp has quality K4POZ tube socket & bias board, NOS tube with new technology parasitic suppressor, new higher value power supply electrolytics, new T/R relay, new cooling fan, 12v filament transformer & choke and new solid state filament warmup timer. Having trouble finding a socket for the GI7b, the supplier that I have used in the past seems to be out of business. :No screen supply required A tube replacement of the same type is a lot less work. With this linear you can make 350-400 Watts on SSB. Sep 15, 2023 · Mountain Top Electronics Single GI-7B/GI-6B amplifier. The power supply side with near 2000 Volt. <br> <br> The person who wants to do this can take a look at what I send them and determine if the tubes Mike, GØIMG and I are both using the Gi7B tube on 50MHz. This bottom section will mount Tube is NIB, passed military control. He put GI7b tubes in just about everything. NEW SOCKET for Russian tubes gi46b, gi23b You won't find a better made socket. 80 W SOCKET for tubes gi7b, gi7bt, gi6b, gs9b with chimney. Switches gi-7bt / gi7bt soviet power coaxial triode tube nos /rhombus/otk qty-4 The larger the ceramic body of the GI-7BT, the better the tube can dissipate heat. And, as with all of my amplifiers, it has been given a name and this one is Piglet. If anyone is interested, i should have the guys email or web site info here somewhere. I normally do not like to bash quality of components, however this needs to be addressed. 3. Große Auswahl an Gi7b Tube Socket entdecken. C $108. Plans are to convert the amp to a single GI7B tube, so the 8873 is not needed and for sale. First, remove the bottom section of the K4POZ socket. 00 (19%) Electron tubes; Tubes; Gi7B; Tube sockets; Tubes; Tube list Gi7B. ux3lvux3lv (460) 100% positive. Drive. gi6b tube To: <amps@contesting. com> Subject: [AMPS] Alpha 76 and 78 tube conversions: From: : jjones@etex. It sounds like 4 Gi-7b's would run forever. Vacuum tubes. I thought you might like some photos of this prototype, including the cooling chimney make form a small fibre plant pot cut to size - it cools the valve very effectively Hi Tony: Excellent! That's great info. Socket from Cathode side, note 0. In order to install a rigid air dam for cooling, the plate choke must be Mar 8, 2023 · Purchased an operating SB-230 that has a very good and hard to find 8873 tube. Mar 3, 2017 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Apr 17, 2010 · I don't think KA4POZ still has GI7 sockets anymore. Mike’s runs at 400W PEP output with 2. GS-9B GI-7B GI-6B GI-70B GI-7BT COOLER only GI7B GI6B and many other tubes. com: SOLD! For sale 10 VHF sockets for GI7B tubes Price-40$ each+shipping CHris Jan 8, 2022 · The amp has quality K4POZ tube socket & bias board, NOS tube with new technology parasitic suppressor, new higher value power supply electrolytics, new T/R relay, new cooling fan, 12v filament transformer & choke and new solid state filament warmup timer. 8 pin. Tube socket,fan,chimney for GI-46b Heathkit SB-220 Kenwood TL-922 KK4NOZ 3-500z. 800ma to put out 1000 watt's cleanly on SSB and about 650-700 clean watts on AM with absolutely beautiful output on a scope. Others. He makes a nice looking socket. The fan is mounted against a 1/8" thick soft material to reduce noise and any vibration. 2. 00 You save $ 30. the chimney is made of PTFE (t eflon). Oct 24, 2016 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Oct 25, 2023 · GI7B Tubes, nos. I thought about building one of the GI7B amps but haven't got enough parts to get it started. 5kW triode (3. Shop with confidence. $40 ea. 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. New technology parasitic suppressors 3. The power output limiting factor mostly is the power transformer. The GI7b amplifier in its finished state. The LimaSDR selfmade transceiver 10PCS 7Pin B7G Tube Socket For EAA91 EC92 6X4 6Z4 6AQ5 EC92 EZ90 Tube AMP DIY. I verified the amp has a good 8875 tube: with 30w SSB in on 80m, has 500w out. GI7b and GI7bt are completed by factory with plate radiators (HgAl) and the others (#70) without (normaly used in water cooling items). So far the GI-7B has proved to be a great tube. Feb 11, 2017 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Apr 7, 2023 · After that i bought a parts SB200 just for fun and did that also with a single 7igb tube. 5kW on HF) - $110 GU48 kW glass triode. The tube is being used quite successfully as an amplifier at 50MHz, however, and some say it is useful even as high as 432MHz. GI21B, 110 W on 8. Sep 29, 2021 · Purchased a working Dentron MLA-1200 to convert to a GI7B tube. Subsequently use some 6 mm² wire (or RG213 etc. There is an article on my site = about the conversion a friend of mine did on an older Dentron amp that = ran 4 572b tubes. The old 8873 socket was not removed and will be used as a tie strip under the chassis. A 12v fan is mounted underneath blowing upwards and cylinders surround tube anodes to contain airflow. This is a radar amplifier tube designed to operate while pulsing at up to 9 kV and 3 GHz. GI7BT Tube Socket Plate GI7BT installation in an MLA-2500, View 2 MLA-2500 Power Supply Dentron MLA-2500 GI-7BT Modification W4EMF 11/30/01. 2 × GI7B. gi6b tube Jul 3, 2021 · With some expert assistance at hand I am redesigning the valve housing and cooling system as well as upgrading the anode/cathode connection points. 4. Feb 23, 2012 · The tube sockets are nice. 7 pin. G3MY chimneys for the GI7b work very well. 500-. Output. The plate choke is an Ameritron 160-10 choke and is barely visible beneath the tubes. Filter. C $2. New front panel overlay makes it look like a new amp. Top-Marken, exklusive Angebote und unschlagbare Preise bei eBay. Here are the steps after removing the 8875 sockets. Fitting two gi7b tubes into the SB200 doesn't get you much more output, just not enough B+ current available for more. Replacing the capacitor board to make room for a 12V filament transformer while using low-profile capacitors. GI7B amplificatore lineare 1. We have a great online selection at the lowest prices with Fast & Free shipping on many items! In response to A LOT of emails I get, here is a video explaining how much drive these tubes require. Works up to 250 MHz, Ua max 2. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Title: GI7B GI70B Author: Electronintorg Subject: JA-2003-01-16 Created Date: 12/14/2002 7:52:05 PM Tubes . Quiet power switching relay prevents ON/OFF switch failure. com. 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 Aug 23, 2013 · Because the American sweep tubes has the same socket as an EL519 a modification would be a piece of cake. Russian impulse triodes Gi7i are cheap rugged tubes. 80 W. NOS (new old stock) Válvulas cerâmicas GI7-BT a venda para todo o Brasil. Here below you will find some shots of the various stages of assembly and a short video of the final testand now ladies and gentlemen start your engine!Gi7b homemade amplifier#Gi7b #HF # KW3KW Rating: 2010-09-05; Nice Gain Time Owned: 0 to 3 months. . 95. Oxide cathode indirectly heated. Sometimes it works better than GU74b. Feb 20, 2011 · linear amplifier (4) gi7b russian tube by W. Freshly gettered and tested. A pair of them will give you about 1200 to 1400 = watts depending on voltage and drive. Mar 23, 2025 · For sale: socket, chimney, clamp for fixing the chimney. In January 2007, I got another tube from Sing, VR2IL. Diode protection on both meters and LED indicators and new 3-wire grounded power cord, wired for 120VAC operation. 5KW 3 X Gi7B, IK4EEP: Vacuum tubes, capacitors, nixie tubes, sockets: Wide Importer & IT Service nakatoyo. You can either cut away the chassis and mount the GI7B tube sockets on a metal plate (subchassis), and suspend this plate slightly below chassis level on standoffs, or you can attempt to mount the tube sockets in the original 8875 holes. A hand-made (10 mm copper strip) clamp around the tube radiator holds it tight to the tube. Diode protection on meter & LED meter lamp 7. They completely contain/cover the tube, nothing left to see than the anode cap. from Ukraine. The socket is installed temporarily to check tube clearance. 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. Jul 23, 2021 · Clean Yaesu FL-2100 converted to a GI7B tube. net (Jimmy Jones): Date: : Sat, 2 Feb 2002 11:53:56 -0600 Apr 27, 2012 · If you have 800V at . This bottom section will mount See full list on lavky. 6S33S-V / 6C33C-B. 5cm - $10 and its socket - $8 GI7B & GI7BT 300-400W, HF to 300MHz; 250W thru 23cm) - $25 SOCKET for GI7B - $25 GI6B identical to GI7B except rated to 1300MHz instead of 3GHz; use same as GI7B - $20 GU5B 2. Harbach soft-start wired for 120VAC operation 4. Heathkit SB-220 from nonsmoking environment converted to use a pair of GI7B tubes. To: <amps@contesting. Last I got were from a VE3 that sells only on Ebayjust search GI7B sockets there. WALLACE@xtra. Even with outstanding cooling, higher powers result in severe thermal drift problems. gi7b tube socket In year 2000, I have purchased a very nice Russian Tube (GI7B) from Dr. New technology parasitic suppressors. Luftkanal (chimney) für GI7B und G16B Senderöhre € 15,00; Ähnliche Produkte. Keying mod for 12VDC @17ma keying and rear panel RCA key jack. I am seriously considering building a dedicated single band amp for 160 meters. 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. Search result for gi7B 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 A tube replacement of the same type is a lot less work. A paper template is used to mark the holes for the socket on the right side panel of the amplifier. As with most Russian power triodes, the heat sink on the GI-6b is removable. This video showing you how to tighten the pins on tube sockets GI7b ( similar to AEG LDa ) also GI70b (same tube - no cooler), Metal-ceramic transmitting triode up to 9 cm. 9 pin. This is a Yaesu FL-2100 amp, I converted to operate with GI7B tubes, including many improvements. New black aluminum front panel & case painted black to match. Jun 18, 2021 · Heathkit SB-220 converted to use a pair of GI7B tubes. Hello everybody, this post is about my passion for DIY. Tube is also physically identical to the GI-6B and GS-9B tubes, but there are some electrical differences. Maybe someday It has been my experience that ALC circuits do not work very well. These tubes = are really heavy duty. Installing the filament transformer and a glitch resistor for fault protection. I purchased a nice tube socket / mount from a ham that makes them. I thought you might like some photos of this prototype, including the cooling chimney make form a small fibre plant pot cut to size - it cools the valve very effectively VC1 to tube socket with heavy (6mm²) wire (left) and coaxcable (center). The text of the article is in Hungarian, of course, but the schematics and construction layouts are easy to follow. Very high quality. Tropicalization: The “T” designation suggests the GI-7BT may be a ‘tropicalized’ version, featuring enhancements for operation in humid and hot environments. HF Amp w/new GI7B Ceramic Tubes. The tube is not for sale! Weight socket + chimney + clamp for fixing the chimney : 0,410 kg. The K4POZ sockets are excellent and can be used with the original chassis. He was also experiencing strange rus 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. GU-74B. The modifications include: 1. Tubes are new, never used and in original polystyrene boxes. OK for HF and for audio as well. I thought you might like some photos of this prototype, including the cooling chimney make form a small fibre plant pot cut to size - it cools the valve very effectively I am working on another Heathkit SB-230 conversion to a GI7b tube. It uses the same socket as the 8873. (whatillo@gmail. Dec 3, 2024 · GI7b tube you see in the last photo is not for sale! For sale: socket, chimney, four chimney fastenings. In input circuit of the GI7B tube. or Best Offer gi7b tube socket. Shipped free in the USA. Material: socket Help center. 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. High voltage section. Figure 2 shows the sockets mounted and wired. A shorty explaining how I clean tube pins and sockets. gi6b tube 10PCS 7Pin B7G Tube Socket For EAA91 EC92 6X4 6Z4 6AQ5 EC92 EZ90 Tube AMP DIY. 5kV and 225W PEP. GI7B tube datasheet Heathkit SB-220 from nonsmoking environment converted to use a pair of GI7B tubes. He put in a pair of the gi7b tubes and was able to = make a real nice amp out of it. $80/pair for the tubes, $175/pair for tubes & sockets. Filament and 12vdc power supplies. New 12 VDC T/R relay---17ma keying 6. It will do 1KW on HF with no problem. RF Deck Modifications – changing the tube sockets to GI7B sockets 1. A complete overview. MLA-2500 GI-7B Tube Sockets using 8875 Holes The first change was to use the original 8875 socket holes. and a small muffin fan running at reduced voltage. The tube was in a cooling case. Conversion/upgrades include: 1. Opens in a new window or tab. I also h The tubes are readily available from several vendors in the Ukraine at quite reasonable prices. Get the best deals for gi7b socket at eBay. co. I am a little baffled. HV relay added, originally HV was switched on/off with switch on front (rated for 250V NOT 2KV!) Coax relays replace original "Washing-machine" type. Slightly cooling of cathode also should be provided. 00 List price: $ 160. 50. Related: gi7b tube gi7b socket gi46b tube gi-6b tube. Brand New. 5kV on the anode and mine is a ‘mini’ version with 1. Dec 3, 2024 · SOCKET for tubes gi7b, gi7bt, gi6b, gs9b with chimney. Apr 24, 2024 · NOS Lot of Four GI7B tubes and Sockets - Ham Radio - LL Amplifier Project Parts. 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. Wholesale bargains. This change will make wiring the sockets in parallel much easier. 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. All. We have a great online selection at the lowest prices with Fast & Free shipping on many items! 20X 7-Pin B7G Homebrew GI-7B Sockets by Lawson Summerrow / W4EMF: Diameter of copper rings may require "tweaking" to adjust for suitably snug fit on tube contact surface Sockets. Jan 11, 2022 · SOLD! Clean, from non-smoking environment, GLA-1000 converted to NOS GI7B tube. W4EMF was another fellow who did numerous tube transplants on many different Dentron amps. The replacements are NOS, and available in abundance via the internet at reasonable $/watt prices. The parasitic suppressors are Title: GI7B GI70B Author: Electronintorg Subject: JA-2003-01-16 Created Date: 12/14/2002 7:52:05 PM NOTE: Myriad tests have been conducted regarding the use of this tube for PAs at 23cm. 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. I've been building with all three versions, and would be interested in hearing about your builds/setups with these. SUPPORT UKRAINIAN SELLERS BY SHOPPING HERE New tube socket made from 10mm Aluminium. Power supply completely rebuilt; has solid-state timer for filament warmup; quality K4POZ tube socket and bias board. Pre-Owned High-Quality 8Pin Vacuum Tube Socket Octal for KT66 KT88 6SL7 6SN7 6V6 5AR4 Search result for gi7B. Apr 3, 2023 · A very well built amp except for the tube sockets. 1758. GU34B PA with original socket GU-34b original socket - SOLD NOTE: GU34B is able to work without any air cooling up to 350mA with plate voltage 2kV 2 SOCKETS for tubes gi7b, gi6b, gs9b with chimney $ 130. com SOCKET for tubes gi7b, gi7bt, gi6b, gs9b. Tube output w/50w drive: 800w out on 80 & 40m and 550w out on 20m, 600w out on 15 & 10m. 8 - 30 Mhz 1. nz (Nick Wallace): Date: : Sun, 3 Feb 2002 19:20:49 +1300 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. You won't find a better made socket. Contact seller. U. New power supply board assembly 2. 37 shipping. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Mike, GØIMG and I are both using the Gi7B tube on 50MHz. Radio Communication; Vintage Find great deals on eBay for Gi7b Tube Socket. While restoring and/or repairing tube rigs, I find dirty tube pins and sockets to be one of the leadin I got it with the idea of putting a GI7B russian tube in it as I suspected the tube might be shot. Einbau LED Orange € 0,95 „DPDT 6“ 2xON/ON Kippschalter 6mm € 0,55; Angebot! 2SC2879 HG 12V 100W HF Transistor This document provides instructions for modifying a Dentron MLA-2500 amplifier to operate with GI7B tubes. GI-46b or GI-23b tube socket Kenwood TL-922 & Heathkit SB-220 3-500Z KK4NOZ. 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. Category. An 8-pin octal plug was secured to the bottom of the choke and it is mounted in an octal tube socket. NOS pair of GI7B tubes with quality sockets & adjustable bias board from K4POZ. The data sheet for the GI7B tube is provided here. The bias circurit. the chimney is made of PTFE (teflon). 12PCS 7pin Tube Socket B7G Valve Base for 6X4 6Z4 EF95 EAA91 EC92 EF91 EZ90 DIY. GI-7B tubes and sockets Send this to a friend with an Apr 23, 2025 · GI-70B is the same tube, but without the heat sink. Reference Art. GI-7B / GI7B URSS POWER COAXIAL TRIODE TUBE OTK/RHOMBUS/ NOS QTY-2. €23. The project never starts. This bottom section will mount Related: gi7b tube gi-7bt gi7b socket gi46b tube. Anyone have Here's a copy of an amplifier by 9A6C that uses TWO GI7B tubes, in the end I used the coil dimensions given in this circuit for my single tube amplifiers anode RF circuit. 2 tubes & sockets $175. n9zrq (950) 100% positive; Seller's other items Seller's other items; Contact seller; Universal BIAS for 3CX800, 3CX1500, GI7B, GS31/35B, GI46B & others triodes. Working out the cooling and physical mount of the tube were a little challenging, but it works well. Quality K4POZ tube socket & bias board 5. Buy It Now +C $20. Margin scheme - You don't pay VAT! Gi7B new (NOS) Feb 24, 2018 · The socket question is partly solved, I have a pair of original GS-14 sockets from Lithuania. Nov 29, 2019 · The socket allows easy insertion and removal of the tube. Original anode coolers was replaced with hi power rectifier coolers which perfectly fit and allows better cooling by easy-to-find axial blower. Gi7b shows excesivecathode overheating in case of insuficient cooling. I mount the tube socked in the holes where the fans were, for a vertical installation. I've seen several done by mounting the tubes horizontal and eliminating the tuned input, but I wanted to retain the input circuitry. The amp puts out 650 Peak on ssb on 80 and 40 meters with the tune control on the proper band markings. Drill a hole in the socket compartment and possibly mount a grommet. 800 ma on those transformer's your in the money. NOS (new old stock) These overseas made tube sockets are showing up in many Hello all. Under the RF chassis. New pair of GI7B tubes w/custom high quality stainless steel sockets. Free returns Aug 15, 2020 · GI-7b Radar Amplifier Triode. Insert some protection against the wire touching 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 10PCS 7Pin B7G Tube Socket For EAA91 EC92 6X4 6Z4 6AQ5 EC92 EZ90 Tube AMP DIY Válvulas cerâmicas GI7-BT a venda para todo o Brasil. Alex UR4LL for the intention of building amplifier for six meters. Search for component: sample: PL2-pT MC-7 : Multiple search: sample: 6N1P-EV Tubes, sockets etc. gi6b tube Sep 12, 2021 · Clean SB-200 converted to GI7B tube. com> Subject: [AMPS] Alpha 76 and 78 tube conversions: From: : NICK. 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 7 Pin Amphenol USA Black Phenolic Miniature Tube Socket B7G NOS Shield 147-905. Heatsink removed, plenty of vent holes all around. US $80. I did this as well with the Russian tube on my SB230. Jetzt einkaufen mit schnellem Versand und unkomplizierten Rückgaben. Most of them sample the drive level and create a negative voltage. A standard 120x120 mm computer fan produces enough air to cool the tubes, part of which must flow into the cathode compartment to prevent the tubes from overheating. 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. which is the :8874/3CX400A7 triode. Just to see if = the gi7b tubes can be a decent replacement for the 8874 tubes. $175 shipped or meet/pick up in San Antonio, TX area. Unfortunately Tony passed away from melanoma cancer afterwards and wasn’t able to visit me. In both cases power output was higher than original tubes. The grid compartment is a T match circuit. With the pair of tubes, I start to plan the project, including: 1) collect of parts About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright A hand-made (10 mm copper strip) clamp around the tube radiator holds it tight to the tube. 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. - $80 SOLD! For sale 10 VHF sockets for GI7B tubes Price-40$ each+shipping CHris New tube socket made from 10mm Aluminium. :No screen supply required Test of the MountainTopElectronics two tube GI7bGreat little russian tubes. Can provide the excellent condition socket & heatsink with it if desired. Pre-Owned. The pictures show the short way to implement these changes. Dec 12, 2023 · NOS GI6B, GI7B, GI9B, and sockets. tjka yepxqm cakcygo zibej everz tszknt wrsf unetqhxp bdailtlq hyhbi