Gi7b tube socket. Customers who bought this product also bought: Ventilator.


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    1. Gi7b tube socket Plenty of info available on the Internet. SOCKET for tubes gi7b, gi7bt, gi6b, gs9b with chimney. GU39A-1 water cooled tetrode,8kW up to 100MHz - $200 GU39B-1 air cooled tetrode , A GI7B tube cost is about $30 and have much less heat (filament only draws 2 amps) and line current draw so 120VAC operation is efficient. The socket question is partly solved, I have a pair of original GS-14 sockets from Lithuania. 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. About eBay; Announcements; Community; Security Center; Seller Center; Policies; Affiliates; Help & Contact; GI7b tube you see in the last photo is not for sale! For sale: socket, chimney, four chimney fastenings. or Best Offer +C $7. 9 pin. New in stock! Mein neues 13. Also there is another spot for a third tube socket T23 . GU-74B. com Getting the pins to mate with the socket was tricky but that's my problem. New front panel overlay makes it look like a new amp. Recently the amplifier was optimized, the tubes were matched, so now they work together (and heating Clean, good condition, from non-smoking environment Amp Supply LA-1000A converted to use the GI7B tube. 57. Socket - $15. Consumer Electronics. Worldwide shipping. 60529036 Very clean SB-230 from nonsmoking environment converted to a single GI7B tube. Riesen aufwand um die Teile zu Vintage Tube GI7B - Free download as PDF File (. 45. The amp has the following upgrades: About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Tube Sockets; Bird / Coaxial Dynamics Slugs; Small Parts; Bridge Rectifiers; Sign in; Pair of 3cx5000 \ YC156 YC179 RF Deck with single tube. Based on the characteristics of the tube, one should not expect PA output power higher than 200 - 250W for ordinary operation, with efficiency no higher than 35%, even with very well made and silver SOLD! I'm rounding up parts for a Dentron GLA-1000B single tube conversion. MLA-2500 GI-7B Tube Sockets using 8875 Holes The first change was to use the original 8875 socket holes. II for self-oscillating radars, and it was copied by the Russians after the war for use in radar, even as recently as the beginning of 1970's. You won't find a better made socket. 62. Although my purpose is to present information, or links to same, regarding Power Amplifiers which are designed and built around "surplus" Russian tubes, I would be remiss in not stating that Explore a wide range of our Gi7b Tube selection. Product is in production: More Info: https://pentalabs. Cobra 2000 GTL with 2 speakers no mic. Has the following: 1. It's just I saw this socket on eBay and it was cheap, so I bought it. You can build these for next to nothing. GI7b and GI7bt are completed by factory with plate radiators (HgAl) and the others (#70) without (normaly used in water cooling items). CONVERSION WITH GI7B The 13 VAC winding of trafo PT1 appears to be sufficiently for feeding 2 × GI7B's filaments. lt Created by LY3NML Limit Operating Values Heater voltage, V 12-13 Anode voltage, kV: in pulsed operation 9 instantaneous value in CW operation 5 GI-7B / GI7B URSS POWER COAXIAL TRIODE TUBE OTK/RHOMBUS. 44. 01 @ 500 volt disc ceramic capacitors in parallel to the cathode collet. The tube is not for sale! You won't find a better made socket. It's been on the air 6 months now and has been very stable. Power supply completely rebuilt; has solid-state timer for filament warmup; quality K4POZ tube socket and bias board. Last one +$15. 95. The key differences between the VC1 to tube socket with heavy (6mm²) wire (left) and coaxcable (center). Shop by category. 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. Mike’s runs at 400W PEP output with 2. Customers who bought this product also bought: Ventilator. Diode protection on meter & LED meter lamp 7. Radio Communication; Vintage Electronics; Jewellery & Watches. Switches . The simplest socket for GI7B - not for sale, how Find great deals on eBay for Gi7b Tube Socket. Can provide the excellent condition socket & heatsink with it if desired. The under side from this linear In input circuit of the GI7B tube Tube heaters are given nearly 3 mins before B+ is available after an anti surge delay of 3 secs. Indicator tubes. Regular price $5,500 00 $5,500. T23 Active Member. $80. 98. New 12 VDC T/R relay---17ma keying 6. All Messages By This Member #8164 Being that the SB-230 is a grounded-grid amplifier, there are no tuned circuits on the input. I coat it with silver. For the reason that commercial tube socket is not available and searching around the net and find it is available from W4ZT; Power transformer, still searching around if it is available to wind in local market. Reference Art. Top view. I finished it in December 2012. $175 shipped or meet/pick up in San Antonio, TX area. I always wonder if Russian ceramic transmitting tubes could be used for audio amplifiers. 5kV DC; Check voltage at the heater collets on the tube sockets. $10. 125" radius (2. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Skip to main content. $80/pair for the tubes, $175/pair for tubes & sockets. GI7B(350W,2GHZ,ceramic triode,air,sockets/this tube is like 8875triode) GI15B(80W,2GHZ,ceramic triode,air) GU74B(4CX800A)tubes SK3A socket for GU84B tube GU32B-1(2KW,HF tetrode) GU43B(1,5KW,100MHz,tetrode,air)+socket-ceramic chimney GI39B(500W,1GHz,ceramic triode,air)like 8874 triode Also install two 150-volt to 170-volt gas voltage protectors, one from each filament line at any tube socket to ground at the socket. Very high quality. 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; so the cables can be under the bottom. They completely contain/cover the tube, nothing left to see than the anode cap. This is a Yaesu FL-2100 amp, I converted to operate with GI7B tubes, including many improvements. Decoding the triode marking GI - generator pulse;. This DIY tube socket can be built to fit any tube. With its 350 Watts plate dissipation this tube is a good choice for producing medium power (300 to 500 Watts). Quiet power switching relay prevents ON/OFF switch failure. ux3lvux3lv (451) 100% positive; Seller's other items Seller's other items; Contact seller; US $80. 53. 8 pin. FOR SALE! SOCKET for Russian tubes : gi7b, gi7bt, gi70, gs9b, gi6b. 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. We have a great online selection at the There are much more advanced tubes than the GI7b. Sockets. The original tube designation for the LD6 or GI-6B was either LD11 /GI11B or 17 likes, 2 comments - amateurradioawesome on November 24, 2022: "GI7B / GI6B Senderöhren Sockel. Include description. Idea was to built cheap, reliable HF amplifier covering 160m. 2A3. I would concentrate on everything between the plate and the antenna output Tube socket,fan,chimney for GI-46b Heathkit SB-220 Kenwood TL-922 KK4NOZ 3-500z. Arcing is less likely with ceramic, 'honest! The material is ideal and manageable with care. The well-known 4CX250B has almost the same dissipation and power range and needs less drive. NOS - Set of four Russian GI7B tubes, and sockets. This document provides instructions for modifying a Dentron MLA-2500 amplifier to operate with GI7B tubes. 79 shipping. Texas star linear amplifier dx 350 hdv ham radio not rm italy. The miniature coaxial cable from the relay was reconnected through two . Limits on operation of a GI7BT in AB2 include: anode dissipation 350W max; cathode current 1. Category. In order to install a rigid air dam for cooling, the plate choke must be moved forward, toward the front of the amp. These components were initially used to equalize tube load sharing more, but because newer tubes tend to arc more (poor pumping and poorer materials/cleanliness/quality control at the tube manufacturers) it is safer and more reliable to HF power amplifier using GI7B . 86 shipping Clean SB-200 converted to GI7B tube. 50. 8V 4A Funknetzteil. Slightly cooling of cathode also should be provided. 27. €22. An 8-pin octal plug was secured to the bottom of the choke and it is mounted in an octal tube socket. or Best Offer +$9. 3. Manufacturers The GI-7B with a heat sink and the GI-70B with no heat sink. GI-6B same as GI7B Tube Amplifier QRO HF VHF UHF TRIODE GI6B. Den Schaltplan habe ich direkt in den Deckel geklebt. 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 click for details : Related: gi7b tube gi-7bt gi7b socket gi46b tube. Buy It Now +C $6. the chimney is made of PTFE (t eflon). There is a new conversion being done on these amps. An original socket for the GI7B. GLA-1000 (Pin #1&2 are connected and on the GLA-1000B Pin#2&3 are connected. The fan also comes on after the 3 mins. Jun 18, 2012 #4 How about the kt88 tube? it seems to fit the bill perfectly. ) and UHF shown. item 6 4 pcs ROYAL HK46E 4-pin UX4 gold tube socket (for WE-300B. New Harbach soft start wired for 120VAC--NOTE: GI7B RF Deck Modifications – changing the tube sockets to GI7B sockets 1. from United States. C $339. I now use ceramic tiles for capacitor end plates. Dentron MLA-2500 GI7B Modification Procedure 3 - Free download as PDF File (. If you like to build electronic devices with vacuum tubes, chances are that you need to obtain some tube sockets, these are ridiculously expensive, even on ebay. I've been building with all three versions, and would be interested in hearing about your builds/setups with these. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Gi7b Tube Socket for sale | eBay Title: GI7B GI70B Author: Electronintorg Subject: JA-2003-01-16 Created Date: 12/14/2002 7:52:05 PM Here are some hints on how to use the RF Power Amplifier Tube Performance Computer for design of a GI7BT based amplifier. Tube socket,fan,chimney for GI-46b Heathkit SB-220 Kenwood TL-922 KK4NOZ 3-500z. The tubes require conditioning before use as most have been in storage 20 to 30 years. Reply. 4. Type Pulse tetrode. 5kW on HF) - $110 It's easy to build a socket for this tube: GU35B basement - Note that the central pin is Grid 1. The high voltage board seen in the middle of the picture. Margin scheme - You don't pay VAT! Gi7B new (NOS) Quantity. This bottom section will mount -For the reason that commercial tube socket is not available and searching around the net and find it is available from W4ZT 1 inch aluminum angle and cut into small section for building the chassis of the GI7B amplifier. Any ideas? Gary K4MT. Shop now for fast shipping and easy returns! Clean Yaesu FL-2100 converted to a GI7B tube. 811A) 4 pcs ROYAL HK46E 4-pin UX4 gold tube socket (for WE-300B. W. net!. The thest performed showed that no ano Find many great new & used options and get the best deals for SOCKET for tubes gi7b, gi7bt, gi6b, gs9b with chimney at the best online prices at eBay! Free shipping for many products! The larger the ceramic body of the GI-7BT, the better the tube can dissipate heat. Wizard Amp with 2 GI7B tubes. 35 shipping. Get the best deals for Gi7b Tube Socket at eBay. C $2. 7 pin. K. Diode protection on both meters and LED indicators and new 3-wire grounded power cord, wired for 120VAC operation. Gi7b shows excesivecathode overheating in case of insuficient cooling. 3-500ZG / 3-500Z Machlett High-Mu Power Triode Matched Trio (3) Tubes. Does not have 160m capability, not physically enough room for plate tank components. It is also a problem if you can't find any sockets to fit the tubes that you have. Items is new in good Working Condition! My sockets have excellent contact between the Not finding what you're looking for? Save gi 7 b tube to get e-mail alerts and updates on your eBay Feed. This bottom section will mount gi-7b / gi7b urss power coaxial triode tube otk/rhombus/ nos qty-2 Using a single tube I'm getting over 400W out with 22W of drive. 12 watching. from Romania. Regular price $500 00 $500. I verified the amp has a good 8875 tube: with 30w SSB in on 80m, has 500w out. Richard Hughes. vy 73, Guenter DL4MEA. 7-pin ceramic tube socket for 6S33S 6S41S 6S18S GU29 GMI-6 GI-30. Sponsored. 5kV on the anode and mine is a ‘mini’ version with 1. 811A) $12. from Ukraine SOCKET FOR RUSSIAN tubes gi7b, gi7bt, gi70, gs9b, gi6b - $64. Selected category All. A fried of me, DF2PY, made me this socket. Cell Phones, Smart Watches & Accessories. For sale 10 VHF sockets for GI7B tubes Send this to a friend with an introduction. 19 watchers. 1758. Tube sockets; Tubes; Tube list Gi7B. The triodes can be used as oscillators or amplifiers in continuous wave or pulsed modes between centimetric and decimetric wavelengths. Vacuum tubes. FOR SALE! 263276618473 item 3 SOCKET for tubes gi7b, gi7bt, gi6b, gs9b with chimney SOCKET for tubes gi7b, gi7bt, gi6b, gs9b with chimney. SOLD! Clean, from non-smoking environment, GLA-1000 converted to NOS GI7B tube. Wholesale & retail trade. 10€ 23d Details. I did this as well with the Russian tube on my SB230. Has a new Harbach voltage doubler power supply board, plate voltage is now approx 2500vdc, wired for 120VAC operation. Hello. 6S33S-V / 6C33C-B. Replacing the capacitor board to make room for a 12V filament transformer while using low-profile capacitors. The original cavity design article was written up in the 80's by Chip Angle, N6CA. pdf), Text File (. T23 . Converted a Yaesu FL-2100B amp from the original (and expensive) 572B glass tubes, to the plentiful, durable, and inexpensive GI7B ceramic triodes. The filament only draws 2 amps so it produces less heat and uses less power. C $5. Shop now for fast shipping and easy returns! Related: gi7b tube gi-7bt gi7b socket. This bottom section will mount A new transmitting valve from Russia - the Gi7B Mirko Voznjak, YU1AD and Mike King, G3MY Issue 55 Six News, Mike, GØIMG and I are both using the Gi7B tube on 50MHz. As I could not find any i Seller: greatball ️ (2,113) 100%, Location: Dadeville, Alabama, US, Ships to: US & many other countries, Item: 164937677688 GI-7 chimney tube socket Kenwood TL-922 Heathkit SB-220 linear amplifier KK4NOZ. First, remove the bottom section of the K4POZ socket. New in stock!". I hat a Drake antenna tuner in this time, so I made the Drake look 🙂. #highvoltage #elektrotechnik #amateurfuk #hamradio. About eBay; Announcements; Community; Security Centre; Seller centre; Policies; Help & contact; AA4PG 3/30/2013 [email protected] Page 1 of 14 Dentron MLA-2500 GI-7B Conversion Based on W4ZT, W4EMF, K4POZ Conversions This is yet one more Dentron MLA-2500 conversion. 95 shipping. The plate choke is an Ameritron 160-10 choke and is barely visible beneath the tubes. The 8uhy choke used previously for NOS pair of GI7B tubes with quality sockets & adjustable bias board from K4POZ. LY1DQ ham radio resources LY1DQ@mrtv. Buy It Now +C $20. I've seen several done by mounting the tubes horizontal and eliminating the tuned input, but I wanted to retain the Tube socket,fan,chimney for GI-46b Heathkit SB-220 Kenwood TL-922 KK4NOZ 3-500z. ) Any comments: GI7B or GI6B Tube Conversion Time Owned: 6 to 12 months. # The GI7b amplifier in its finished state. 133. In my post on how to replace the tubes of an Alpha91b I explained in depth why it is so important to recondition, to “getter”, the tubes at least 24 hours before any other voltage can be applied. $12. C $108. gi6b tube. Home-made. If anyone is interested, i should have the guys email or web site info here somewhere. Clean, good condition, from non-smoking environment Amp Supply LA-1000A converted to use the GI7B tube. The blower I've used, some people will recognise as the unit pulled from the GS35b amplifier of mine, this little blower supplies enough air flow to meet the requirements for the GI7b Universal BIAS for 3CX800, 3CX1500, GI7B, GS31/35B, GI46B & others triodes. Military quality check passed (rhombus ). Together they use approximately 4 A/12 V and 572B's 8 A/6. 3V. Additional site navigation. New quality tube socket and bias board from K4POZ and has new solid state timer for filament warmup, approx 90 seconds. Starting with the GI7B tube and ending with the listed parts on web page: A 2500W dissipation GU78B modern tetrode was to 250 DM (about $120), also its socket. The eight holes used for socket construction are on a 1. Find many great new & used options and get the best deals for Svetlana 6B4G Vintage Tube & Tube Socket at the best online prices at eBay! Free shipping for many products gi6b, gs9b with chimney SOCKET for tubes gi7b, gi7bt, gi6b, gs9b with chimney. GI7b and GI7bt tubes may be available from Alex, UR4LL ( Disclaimer: This is for your information only, I have no affiliation of any kind with this, and accept no responsability. Pride DX300. This has nothing to do with the Disney movies, i decided on Piglet as I consider the amp to be the daughter of my Sucht ihr einen Sockel für GI7B , GS35B , GI46b dann bitte nur hier kaufen . W8JI arrows on his photo states: "Ground grids directly!" VERY IMPORTANT; DO NOT OVER TIGHTEN THE FAR Circuits is now going to offer up an RF Board (tube board) for the Dentron GLA-1000 series amplifiers that is made for the Svetlana EL-509/6KG6 tube sockets. Sucht ihr einen Sockel für GI7B , GS35B , GI46b dann bitte nur hier kaufen . That was the first time I tried the tube in the NOS GI6B, GI7B, GI9B, and sockets. Here are some links that show a rough mill set of sockets, some specs for the tube, and a neat conversion of an old Dentron 160-10L done with a pair of these tubes. The document summarizes the specifications and operating parameters of the GI-7B and GI-70B microwave triode tubes. 5. Sold Out. Working out the cooling and physical mount of the tube were a little challenging, but it works well. 00 shipping. Tropicalization: The “T” designation suggests the GI-7BT may be a ‘tropicalized’ version, featuring enhancements for operation in humid and hot environments. This picture shows the cabinet with the transformer I've used, plus the GI7b tube and my original tune and load caps. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Find top brands, exclusive offers, and unbeatable prices on eBay. com. Was die Lieferzeit angeht ( 2 Wochen ) hat nichts mit dem verkäufer zu tun sondern am Krieg . I tend to build the sockets in my own, so that the tubes are visible, clamped by Find great deals on eBay for Gi7b Socket. The GU-74b is fully equivalent to the modern 4CX800A tube characteristics of the 4CX800A, the tube will operate efficiently at low plate voltage. Here is the look from this linear. Explore a wide range of our Gi6b Tube selection. 3 V. I thought you might like some photos of this prototype, including 7 Pin Amphenol USA Black Phenolic Miniature Tube Socket B7G NOS Shield 147-905. Under SOCKET for GI7B - $25 GI6B identical to GI7B except rated to 1300MHz instead of 3GHz; use same as GI7B - $20 GU5B 2. Introduction: Send Message. The new capacitors fitted into a peace of plastic material (don't know the The Tube: Control PCB: Top View: If you have a 2C39 or a 7289 in the parts box, you can build the cavity for this amplifier from the plans in the ARRL Handbook. The K4POZ sockets are excellent and can be used with the original chassis. dmk. KW3KW MLA-2500 GI-7B Tube Sockets using 8875 Holes The first change was to use the original 8875 socket holes. . C $30. 5kW triode (3. Buy It Now +$8. About eBay; Announcements; Community; Security Center; Seller Center; Policies; Affiliates; Help & Contact; 6P45S Sweep Tube - $20, Socket - $2. 98 shipping. GI-7B GI - letters defining the type of lamp. from China. 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 Tube ГИ- 7Б or Röhre ГИ-7Б ID23451, Transmitting Triode, air cooled, COAXIAL in general (X. Triode (2) Items (2) SOCKET for tubes gi7b, gi7bt, gi6b, gs9b with chimney. Explore a wide range of our Gi46b Tube selection. Quality K4POZ tube socket & bias board 5. socket machined duralumin;. Shop by category 12PCS 7pin Tube Socket B7G Valve Base for 6X4 6Z4 EF95 EAA91 EC92 EF91 EZ90 DIY. The 262564536906 NOS - Set of four Russian GI7B tubes, and sockets. Low current 12VDC keying & RCA Jack for keying. The chassis’s dimension will be at (360mm D x 350mm W x 200mm H ) One of the original tube-socket holes can be enlarged a bit so this can be done without too much metal work. New complete Harbach power supply rebuild includes electrolytics, rectifiers, metering and bleeder resistors. The modifications include: 1. The amp puts out 700w on 80m SSB with 40w drive and has original tuned input. 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 even at 400W+ output. Buy It Now. Get the best deals for gi7b socket at eBay. 63 shipping. Harbach soft-start wired for 120VAC operation 4. Buy It Now +$25. Test of the MountainTopElectronics two tube GI7bGreat little russian tubes. 11. Shop with confidence. GI7B / GI6B Senderöhren Sockel. Add to cart done In stock Description; Product Details; Gi7B new (NOS) Reference Art. Email wb4 Dragan YU1AW, has kindly granted me permission to present his RF power amplifier designs, even though he already has a web site of his own! His home page is on QSL. I am also selling some sockets made to fit the Russian GI7B triodes. SOCKET SOCKET for tubes gi7b, gi7bt, gi6b, gs9b. Harmonic issues with the OEM socket for this tube family. Similar to PL519 except the heater voltage is 6. 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. The UA, UT, LZ and other peoples who had these tubes for sale had to travel thousands km for being there, so these prices are very low indeed if we consider this distance (for me was to 3000 km). NOTE: "low" Sockets, tube, 36mm x 1/2" Dr, 250mm Code: 60529036 Brand: Unspecified Product Details Sockets, tube, 36mm x 1/2" Dr, 250mm Product Features and Benefits; Documentation; Extra Deep Tube Socket 36mm. - 8Pin Vacuum Tube Socket Base Bakelite for Title: GI7B GI70B Author: Electronintorg Subject: JA-2003-01-16 Created Date: 12/14/2002 7:52:05 PM Clean, good condition Amp Supply LA-1000 converted to use the GI7B tube. ILS 26. Shop by category 5PCS 7Pin B7G Tube Socket For 6X4 6Z4 6AQ5 6J1 EZ90 EF95 6AU6 EAA91 Tube DIY. Last I got were from a VE3 that sells only on Ebayjust search GI7B sockets there. 12 shipping. Once you have installed the ground lugs properly in contact with the tube socket grid pin, solder the lug directly to the grid pin. I have no pictures any more from the building phase, but I can show you what I have. Limits. I have several more of these amps awaiting conversion to the Svetlana EL-509/6KG6 tubes and didn't want to have to use the plastic It seems that the exchange of GU74b / 4CX800 tubes in Amplifiers like Alpha91b, Acom2000A, and Acom1000 is more interested than originally expected. 37 shipping. 25. Russian Gi7b tube SE Audio Amplifier test. Both meters have protection diodes and LED lamps. Opens in a new window or tab. New Harbach power supply and soft start. 60. $58. Here are the steps after removing the 8875 sockets. Apr 17, 2010 645 12 28. Radio tubes are valves. I built a "silent" speaker system to test audio amplifiers. item 8 4 Vtg. Wholesale bargains. And, as with all of my amplifiers, it has been given a name and this one is Piglet. Shop now for fast shipping and easy returns! Place the visually undamaged GU74b into the first socket and then repeat the test with the same tube in the other socket; Apply high voltage; Connect Dummy load; Apply 5-10 Watts; Measurements: Output power of the GI7B(350W,2GHZ,ceramic triode,air,sockets/this tube is like 8875triode) GI15B(80W,2GHZ,ceramic triode,air) GU74B(4CX800A)tubes+SK1A sockets for them SK3A socket for GU84B tube GU32B-1(2KW,HF tetrode) GU43B(1,5KW,100MHz,tetrode,air)+socket-ceramic chimney GI39B(500W,1GHz,ceramic triode,air)like 8874 triode Sockets for TH328 Clean Yaesu FL-2500 amp converted to a single GI7B tube. Filter. Keying mod for 12VDC @17ma keying and rear panel RCA key jack. Others. A 4. Has a solid-state 90 second timer for tube filament warmup to extend tube life. Included here is the junk 'voltage doubler' PSU board that I'd also planned on using, 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, GI7b tube you see in the last photo is not for sale! For sale: socket, chimney, four chimney fastenings. Part No. #diyaudio. from Ukraine. With 50w drive, puts out 500-600+ watts, 80-10m depending on band, drive power and CW/SSB HV switch setting. This tube was originally developed by the Germans during W. Radio Communication; Vintage Electronics; Type. Tube output w/50w drive: 800w out on 80 & 40m and 550w out on 20m, 600w out on 15 & 10m. 73 Sergei RW3BP ( Another style of a GI7b 23cm amplifier ) have a look at OK1KIR's GI7b power amp. 5kV and 225W PEP. It cost $95 dollars including the entire cutting fee. Riesen aufwand um Mullard Vintage Tubes & Tube Sockets, Tungsram Vintage Tubes & Tubes Sockets, Svetlana Vintage Tubes & Tubes Sockets, Telefunken Vintage The GI7b / GI7bt tube is not the best tube for linear amplification on the 1296MHz band, but because these tubes are relatively cheap and accessible, many of us tried to use them. 10PCS 7Pin B7G Tube Socket For EAA91 6J1 6X4 6Z4 6AQ5 EZ90 Tube Audio PCB Mount GI7BT Tube Socket Plate Tube Socket Plate installation GI7BT Sockets Installed 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. 25A max; grid dissipation 7W max; anode voltage 2. T. A single GI7B tube has the same output as 4 of the 811a or 2 of the 572b tube, readily available and higher quality and lower cost. Gi7b is tube designed for microwaves but working good as HF amplifier. It is the same tube used for the DX3 Emtron 4 kW PEP linear. 5" squares). SK509 type Socket - $2 GS15B 500+ W on 23 cm in KD5FZX PA design - $10. Capacitors. First, I pulled all of the stuff associated with the 572 tubes and sockets out, except for the tuned input. Tube Socket for GI7B. I purchased a nice tube socket / mount from a ham that makes them. Here I show the repair and modifications of a heathkit Sb-200Enjoy Purchased an operating SB-230 that has a very good and hard to find 8873 tube. Purchased a working Dentron MLA-1200 to convert to a GI7B tube. Regular price $950 00 $950. About eBay; Announcements; Community; Security Centre; Seller centre; Policies; Help & contact; I guess I will have to order the GI7B tube and socket. ILS 39. 00. ILS 79. 50€ 27 02d Details HG2879 2 x GI-7B / GI7B GI-7BT RUSSIAN MICROWAVE HF VHF UHF POWER TUBES. SOCKET for tubes: Eimac 3CX3000A7 with chimney For sale: socket, chimney, eight chimney fastenings. Plans are to convert the amp to a single GI7B tube, so the 8873 is not needed and for sale. Tube Socket & Chimney For 8877 3CX1500A7. Consequently, GI-7b / GI7b HF-VHF-UHF power coaxial triode tube (original box) Vacuum tubes, Capacitors, Nixie Tubes, Indicators, VFD display, LED, Sockets. Heatsink removed, plenty of vent holes all around. Shop by category set tube amplifier; hifi tube amplifier; vintage stereo tube amp; radio amp; b2 amplifier; vintage amateur radio; 7 channel amp; tube amplifier kit; 7n7 tube; Snažil jsem se naladit tento PA s dvěma GI7b asi dva měsíce, a to bez výsledku, takže jsem to musel vzdát, protože to bylo nad moje síly. Brand New. I start with the tube socket. Skip to main content. WD8DAS SB-230 Amplifier Tube Retrofit Project Air-cooled Russian GI-7B triode replaces the conduction-cooled 8873. $250. See later picture. Helpful details: GI-7B Amplifier Schematic: 2-tube GI7B-HF-Amplifier Schematic Until early this year, VR2IL sold his tube to me. Heat the tube 30 minutes with a filament voltage of 12. 80 GI-7B Socket Built By Bob Briggs, VK3ZL, July 2006 (click on the small pictures to see a larger picture in another browser window) This video presents a monoband 10m linear amplifier using the russian military tube GI-7B in grounded grid connection. Test with 4 × PL-519 and 2 × GI-7B with minor modifications (see schematic) of the original GLA-1000 design. 2. An Inquiry into your eHam classifieds post : I did this as well with the Russian tube on my SB230. 38. Grid Sockets. Mike, GØIMG and I are both using the Gi7B tube on 50MHz. Here we have another linear with 2 valves GI-7B. GI-7 and equivalent tube socket custom made to fit mounting holes for removed 3-500Z socket in Kenwood TL-922 or Heathkit SB220 linear amplifiers. New power supply board assembly 2. New technology parasitic suppressors. HF Amp w/new GI7B Ceramic Tubes. Buy It Now +C $27. gi7b tube socket. Power output of the new ones same as old, 45 watts in on 20m Gu-74b Tube; Gu74b Tube; 6cg7 Tube; 75 Ohm Coaxial Cable; Igbt Transistor; Icom R70; 6as7g Tube; Icom 706 Mk2g; Bho Tube; 6b4g Tube; Ft 7 Yaesu; Hf Vhf Uhf Transceivers; Rg174 Coaxial Cable; 6gk6 Tube They are also good for uhf amps. Often amplifiers 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. Below, left, the 12VDC supply is mounted. In addition, I have made a few changes that may be helpful to others I start at first with one Russian GI7B tube. I sent him a new Svetlana tube socket for a pattern. GI7b tube you see in the last photo is not for sale! For sale: socket, chimney, MLA-2500 GI-7B Tube Sockets using 8875 Holes The first change was to use the original 8875 GI7b tube you see in the last photo is not for sale! For sale: socket, chimney, four chimney fastenings. New quality tube socket and bias board from K4POZ and has new solid state timer for filament warmup, about 90 seconds. GI-7B / GI7B URSS POWER COAXIAL TRIODE TUBE OTK/RHOMBUS/ NOS QTY-2. But if you think a bit about sockets, screen voltage supply, high pressure blower - you MLA-2500 GI-7B Tube Sockets using 8875 Holes The first change was to use the original 8875 socket holes. I forgot to remove the tube impedance simulation resistor. ILS 900. Problém byl v tom, že nabudit PA na příkon kolem 400W nebyl problém, ale vyloudit z výstupní vazby víc než 100W už bylo obrovský problém. 17 to C $6. By and large this one follows the steps outlined by W4ZT, W4EMF, and K4POZ and their work is gratefully acknowledged. The parasitic suppressors are GI7b tube you see in the last photo is not for sale! For sale: socket, chimney, four chimney fastenings. and a small muffin fan running at reduced voltage. txt) or read online for free. With the pair of tube, 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 SOCKET FOR RUSSIAN tubes gi7b, gi7bt, gi70, gs9b, gi6b (model: LV №4) - $72. Pre-Owned. 62. The tubes GI6b, GI7b, GI7bt, GI70b and GI70bt are all the same GI7b (=LD7). 50€ 16d Details Veiling. I also use it as an AM linear at 100W of carrier. 7k NTC resistor is mounted close to the tube socket. 04. (the way the pins are soldered on the bottom of the tube socket). Related: gi7b tube gi-7bt gi7b socket gi46b tube. Tube is GI70BT. 9 V. qcmkr jiyv aafwpyi trmsv iyg aqontru mxoaz tulkyk pjqjqt harrxv