Hf tube amplifier kit 75 out of 5 stars. 86 out of 5 stars. As with two unneutralized 572B tubes, three 811A tubes are marginally stable at upper HF. Vintage Eico HF-20 // Integrated Tube Amplifier Monoblocks SOLD , now part of a Private Collection 7610821083357-1 Share. $54. I started this project back in 2016 — I had finished my Automatic Antenna Tuner (seen in the upper-left of the picture, above) and a PA project that would integrate into my FPGA-SDR and ATU system seemed like the ideal next step. The Gemini HF-1K is a solid-state 1kW 1. Building your own tube type HF amplifier. Discovery. 4 x 572B matched tubes: Relays: Coaxial Output I am not a fan of amplifiers, but it was hard to pass at $29 for 50 Watts. This design was chosen for its inherent stability and extremely low production of spurious emissions. Please follow them carefully. Here I will post the latest developments. The FOSI Audio T20 Tube Amplifier is a bluetooth tube amplifier that streams Hi-Fi music to your stereo system to separate passive speakers. Brand New · EICO. 00. We can repair any HF transceiver and amplifier from the Kenwood TS-820 to the Icom IC-781 or Yaesu FT-1000 D and amplifier from the Ameritron 811 to the Alpha 9500. Design handcrafted by Spiffy Stores. 2. Amplifier, Linear, HF + 6 meters, One 4CX1000A Tube, 1500 W+, No AC Plug Installed, Each. It's been a while since I built an amp for HF; I'd have to go back to the 60's and a pair of the venerable 3-500z tubes that I put together back then. HF/6m LDMOS linear amplifier kits This is the home page of the A600 – my 2x MRF300 600W linear amplifier project for HF/6m, as initially described in this article . As expected, the AIYIMA T9 BT 5. The kit includes all the necessary parts for most RF Linear Amplifiers used for Ham HF Amplifiers. In the late 1960s, EICO introduced a line of solid state electronics audio equipment referred to as Cortina, but by the mid-1970s the only audio products they sold were kits manufactured for Find Amplifiers Tube Amplifier Type and get Free Shipping on Most Orders Over $99 at DX Engineering! DX Engineering Gift Cards - Always the Perfect Gift! Departments ; Amplifier, HF, Manual Tune, Heavy Duty, 1,500W+ , 160m-10m, Two FU-728F Tubes, No AC Plugs Installed, 240VAC, Each. The capacitors used in amplifier power supplies also pack a high amperage charge. This video is a followup from the ESP32 based exciter I built earlierhttps://www. 50 watt per channel power output can support most home passive speakers to create remarkable audio quality. From $ 20. 3. Again this HL- 2200 will require some minor trouble shooting to have it working on all bands. The VTA-TDB may also be easily retrofitted to any VTA ST-70/ST-120 tube amp kit. 12 Kw Ldmos Hf Power Amplifier 1850mhz Ssb Cw 1200w2017-09-26 20:14:16. Its graphite plate is noticeably taller than the Eimac or the Taylor brand tube, and is said to handle 600W dissipation. Description. VK-AMPS Users Group Facebook Group. This is a generic linear amplifier RFI kit for AC powered amplifiers. 1KW HF/6M LDMOS Amplifier Kit 1KW HF/6m KIT. I HF/6m Linear LDMOS Amplifier Kits has information about the latest version of this kit. Even though the brand name is RF-KIT, this is a FULLY JUMA PA100 is a small size true 100 W linear amplifier for all amateur HF bands. The amplifier is available as a component kit. 5kg (12lbs) solid state 1kW linear amplifier for HF and 6 meter bands. c. Solder the tubing to the PCB ends with a high power hot soldering iron. Learn about vacuum power amplifier tubes. Introduction KPA500 Compact 160-6 M Solid State Amplifier Available as a Factory Assembled or Modular No-Soldering Kit. Learn about the dangers of tetrode tubes in a swamped input HF amplifier. Ω This video is a followup from the ESP32 based exciter I built earlierhttps://www. Learn about "pulse-rated" tubes, and what the difference is from standard tubes. Order: 1 piece. $19. Save 4% at checkout. Part Number: AOM-2100-240. 00 used, Would you be able to build a hf 3oow linear amplifier to use on my yaesy ft-891 and like to know how much money it would cost me in Cnadian funds. Add more punch to your signal with Elecraft's ACOM 2000A Automatic HF Linear Amplifiers are the world's most advanced amplifiers designed specifically for hams. At the core of the ACOM 2000A is a classic HF amplifier design, employing two Svetlana 4CX800A (GU74B) high performance ceramic metal tetrodes operating in a grid-driven configuration. Lana HF Barebones - Ultra Low-Noise LF, MF & HF Amplifier (LNA) Module for RF & Software Save Big on new & used HF Ham Radio Amplifiers from top brands like Ameritron, Heathkit, The assembly document includes circuit diagram and detailed steps for the kit assembly. There are two models available, the PA100 with analog user interface and the PA100-D with digital user HF/6m LDMOS linear amplifier kits This is the home page of the A600 – my 2x MRF300 600W linear amplifier project for HF/6m, as initially described in this article . We have repaired over 2,000 HF transceivers and amplifiers during that period. $95. DX1200; Gemini HF-1K; Pioneer; Challenger; VHF/UHF Amplifiers. #7 -- FOSI Audio T20 Tube Amplifier. 813 tubes can be found via the internet from around $5. 8MHz to 54MHz; 24dB typical gain, needs less than 3W drive; High efficiency, typical draw 20A @ 44V. 811 and 572 tubes are particularly bad about this. SMA connectors are rated for 600W continuous @ 1GHz, at HF they are limited by the insulation breakdown limit, which is typically around 300-350Vrms depending on who makes the connector. 8-30MHz PCB Rev 3 Designed and produced by QRP Labs, 2018 Rubber tube Short ~4mm length of rubber tube Heatsink Custom-manufactured 130x28x25mm 10W HF Linear PA kit assembly 2. It has the unique feature of onboard raised cosine envelope shaping for perfect click-free CW. Estimated DX WORLD-e4x MRF300 HF/6m 1200W Linear Amplifier boardRF IN: 0-12WRF OUT: 0-1200WPOWER SUPPLY 48-54V 35AALL MODES DIGITAL/SSB/CW/FM/AM e. But it's sold to pay for the Mercury IIIS. 00, 13-Dec-2023) P Linear HF VHF Amplifier kit with 2x MRF300 LDMOS RF power transistors. Get one of these highly-advanced HF amplifiers for your shack. The following projects pages are of diy vacuum tube amplifier kits that are now discontinued or tube projects that have been superseded by a more up to date project. G around for years and has a few minor paint scrapes on. 8Mhz - 80Mhz SO-239 Conne $150. Those that are banking on getting tubes from China are going to be very disappointed. Based on Jim Veatch's winning ARRL Home Brew Challenge II amplifier design, it's been improved and functionality has been expanded to include a new aluminum enclosure with built i. Skip to content. It uses a PAIR of dual-LDMOS BLF188XR power devices for reliability, and has full high speed QSK capability using a diode switching circuit. HF Linear Amplifier RFI Kit - Ameritron ALS600/1300/1306 - 5 Filters. Ham Radio Kits and Products. Part Number: OMR-OM-4001HF. 2 Meter Ham Radio Amplifier; 3 500z Tubes Indiana Ham Radio Amplifiers; Alpha Amplifier; The Amplifiers So what is an EICO HF-60? It's a monoblock amplifier - requiring two for stereo - featuring 5AR4 tube rectification, the classic Mullard 5-20 circuit with an EF86 and 6SN7 driving EL34 output tubes in Ultralinear, fixed bias, and the legendary Acrosound TO-330 output transformer. The Mercury III kit is quite popular, but it is a modern 1200w LDMOS amp kit costing ~$2500. 00 USD Pearl 3 Phono Preamplifier. I think it's the characteristics of the 7 and 10 that make them a poor fit for pp EL84 (or pp 7189) amplifiers,and not their sensitivity per se. Their High Power Vacuum Tube Linear I have always wanted to work on one of these and I was happy to be able to finally. eHam. This can destabilize amplifiers at upper HF. or Best Offer. Add more punch to your signal with Elecraft's KPA500/KAT500 PowerCombo! Learn more here. They are of particular interest to hams building tetrode amplifiers, which have more complicated biasing circuits than grounded grid triodes. If you will DIY amplifier kits, amplifier chassis, hard to find transistors and circuit boards. Scaling down, the Hardrock-50 comes to mind. We are very pleased to but by the mid-1970s the only audio products they sold were kits manufactured for them in South Korea. These days the popular kits seem to be larger solid-state amps. EICO left the audio market in the late 1970s and the electronics market some time later. 00 USD ACP+ Amp Camp Preamp & HPA. 08 shipping. It is especially very convenient for DXpeditions and similar traveling events as well as for station use. LDMOS Over-current Protection module 40A, 80A, 12 from $100. Building your own tube-type HF amplifier, doing it "The Right way". ly/41mcl5ZFor updated price or p Introduction KPA500 Compact 160-6 M Solid State Amplifier Available as a Factory Assembled or Modular No-Soldering Kit. Overview OVERVIEW 500+ Watts in a compact package the s Ham Radio Solid State Amplifier The RF-Kit B26-PA RF2K-S comes at first as a kit. 80-$15. Elekit TU-8100 – PCL86 Single Stereo Amplifier DIY Kit; Elekit TU-8200R – 6L6GC Single Tube Amplifier DIY Kit; Elekit TU-8500 – Vacuum Tube Pre-amplifier DIY Kit; Elekit TU-8550 – Tube Preamp Kit with a Phono DIY Kit 70w SSB Linear HF Power Amplifier Build - Since there are no assembly instructions or parts lists for this kit, I decided to create a build video. KIT INCLUDE Rm Italy Klv1000 Vip Vacuum Tubes Linear Amplifier 220v2017-10-01 20:35:26. DX1200; Gemini HF-1K. The cover but otherwise looks brand new. 600W, 1. Parts Only A word of caution pertaining to tube type amplifiers and their power supplies: Most tube amplifiers have voltages ranging from 2000 to 4000 volts. t. 00 The MiniPA Linear amplifier for HF But there are cheap kits sold on eBay and from Chinese suppliers such as AliBaba. You can purchase this kit here https://amzn. AVAILABLE KITS. Previous slide Next slide. RF-KIT Power Amplifier - Assembled Version. Part Number: AOM-1010-120. Collection of 15 HF Amplifier kits products. Creation date : 10/08/2007 @ 22:33 Last update : 14/09/2024 @ 22:55 Category : Multiband HF Projects Page read 36455 times AVAILABLE KITS. Robert says: In addition, we offer premium high-end DIY amplifier kits from our SoundImpress brand. Hits: 2695 | Votes: 6 | Rating: 10 Ameritron AL-1200 to gs35b Conversion; Scans of original G2DAF articles on his HF linear amplifier using QY3-125 tube. With it you can select pre amplify, and control accurately any stereophonic source (tape, discs, or broadcasts) and feed it through the self-contained dual 14 watt amplifiers to a stereo pair of speaker systems. The three-tube 811 model is not neutralized. These amplifiers not only help you transmit Jeff (K6JCA) has written a series of posts describing his homebrew project 500 watt HF power amplifier:. Powered Mixer Amplifier Factory Power 1600 Speakers 20 Watt Model Tubes with long thin grid leads and large internal structures sometimes have significant anode-to-cathode feedthrough. Hits: 1827 | Votes: 5 | Rating: 3 A 5W HF PA kit compatible with the Ultimate3S transmitter kit, and also for standalone use in homebrew projects. Red Roo tube amplifier kits offer the unique sound of a high-performance tube amplifier without breaking the bank. HF linear amplifier, pair of 572B tubes, 80, 40, 20 meters, homebrew, 600 watts output The MiniPA Linear amplifier for HF – in practice. com/watch?v=jnVwxNwio8EIn this video I build up an IRF530 based ampl The Gemini HF-1K is a solid-state 1kW 1. One of the most versatile HF Amplifiers on the market today! Thank you for watching and enjoy the video!#RF2KS#HFAmpl One of the most exciting ways to boost your radio performance is by investing in high-quality linear amplifiers. HF Linear Amplifier RFI Kit - Ameritron ALS600/1300/1306 - 5 Yes, we have been repairing amateur radio equipment and tube audio amplifiers for for over 20 years. Available as a kit or in 2022+ factory assembled Avg. ; Comprehensive Transmitting Tube Data 1988 Handbook Base Diagrams and Data; Ian White, GM3SEK, sells kits for tube control and protection. This push-pull/parallel circuit produces a power output of 600 watts across the 2 to 30 MHz band using four RF devices without the added loss and cost of power splitters and combiners. Works on many popular amplifiers including: ALPHA models – all AC models including 76, 77, 78, 86, 87A, 89, 91B, 99, HF Linear Amplifier RFI Kit - Alpha, Ameritron, HeathKit, Henry, Icom, Kenwood, Yaesu, Generic Amps - 4 Filters. The item "Heathkit HL-2200 HF Linear Amplifier two 3-500Z tubes. 0 Amplifier takes the first place. Kit Power Amplifier 1854 Mhz 2400w For Ldmos Blf188xr 50w Hf Power Amplifier Plastic 324mhz Hf Amplifier For2024-12-23 10:20:51. 1200W HF/6m LINEAR AMPLIFIER KIT (3 BOARDS) FOR BLF188XR MRF1K50H MRFX1K80H 1200W LDMOS HF/6m LINEAR AMPLIFIER KIT. These amplifiers were the first to include fully-automatic tuning and sophisticated digital-control capabilities. 90. 2: 1: W6PQL: kit, dual directional detector: DDD: 2: W6PQL: kit, high current fet switch: HCFS SMA is used for minimal insertion loss, minimal PCB footprint and wide compatibility. to/3gTd1dMWhen looking around I could not find any good video's on how to put one of these kits together so here the VTA M-125 tube amplifier KIT Currently out of stock In a VTA ST-70/ST-120 tube amp kit, the VTA-TDB replaces the 3 lug terminal strip. HF Linear Amplifier Complete Triode USA Dynaco ST-70 DIY Tube Amp Kit. 4 out of 5 stars. SKU RFI-LA-AM. A word of caution pertaining to tube type amplifiers and their power supplies: Most tube amplifiers have voltages ranging from 2000 to 4000 volts. The HF-1K is a Linear amplifier so suitable for all modes of operation – SSB/CW/RTTY/AM/FM SMA is used for minimal insertion loss, minimal PCB footprint and wide compatibility. C $545. 3 options HF linear amplifier, pair of 572B tubes, 80, 40, 20 meters, homebrew, 600 watts output. JUMA PA1000 is a ultra light weight only 5. Only the RF2K-S Assembled Version is available in North America through Island Amplifier at this link: islandamplifier. In this case Kit does not mean that you get 100 plastic bags with individual parts, you need to assemble and solder boards, drill housing parts or connect the PA. 2mhz30mhz 50w Short Power Amplifier Automatic Transmit 600W EB104 HF AMP COMPONENT SET. Over 600W from 1. HF Amplifier kits < >-55 db RF Sampler 2KW 1. NXP Homebrew RF Design Challenge award winner. FREE delivery Fri, Sep 20 on $35 of items shipped by Amazon. Tube Amplifier Kit, DIY Tube Preamp Kit, Tube Preamp, DIY Amplifier Kit, 6j1 Vacuum Electron Tube Valve Preamp Tube Amplifie Board Headphone Amp Parts Musical Fidelity Kit DIY Electronic Kits. QRP for HF is now popular – rigs such as the Yaesu FT818 or low power SDR transceivers are readily available. to/3gTd1dMMinipa 70 watt HF Amplifier Kit Assembly and Testing Part 1When looking around I could not find any goo Most HF Amplifier for the Price; I don't think there is any question that the best value in HF amplifiers today is the Mercury IIIs at $2500 kit price with a few hours of your time to put it together. ACOM's revolutionary 2000A amplifiers deliver maximum legal power in all modes and operate on all amateur HF bands Find Parts and Accessories 500 watt hf linear amplifier kit KEYWORD and get Free Shipping on Most Orders Over $99 at DX Engineering! DX Engineering Gift Cards - Always the Perfect Gift! Amplifier, 160-6 meters, One 4CX1000 Tube, 1500 W All Modes, 240 Vac NEMA 6-15P Plug Installed. It uses a PAIR of dual-LDMOS BLF188XR power devices for reliability, and has full high speed QSK capability using a diode HF amplifiers for ham radio use. Time to upgrade, so I kit, basic hf amplifier: HFAMPKIT: 1: W6PQL: kit, control board: CTRL-v6. 600W is about 173Vrms, even with high SWR it’s hard to reach 300V and the Its graphite plate is noticeably taller than the Eimac or the Taylor brand tube, and is said to handle 600W dissipation. The PA kit is always delivered as an almost finished device. Ω. Bill Beech, NJ7P has a tube database on his web site. The Retro ’64 uses a circuit that is based on a 1964 Princeton Reverb – the compact, iconic tube amplifier known for its unique blend of simplicity, rich tone, and portability. 813s are recessed about 1. 49. Around 50w on HF with 5w input. All kits are professionally designed using top-quality audio-grade components and have easy step-by-step instructions. youtube. com RF2K-S "Silent Series" Solid State 1,500 watt Linear Amplifiers are no longer sold by DX Engineering. VK-AMPS provides Ham Radio Kits & Modules. C $43. The KPA500 is also compatible with most popular rigs. 8MHz – 50MHz power amplifier with additional capability at 472kHz. Onboard sensors for You can purchase this kit here https://amzn. his article explores the construction of a pl519 tube amplifier utilizing ulrich l rohde n1ul s insights focusing on a modest 25w continuous output the design ensures robustness with forced air cooling the detailed breakdown covers MFJ Enterprises Inc , Ameritron , Hy-Gain , Hygain,Cushcraft , Vectronics , Mirage , MFJ, MFJ Enterprises , Antenna,Radio , Ham Radio , Amateur Radio , Tuner,Analyzer Another home-brew HF amp project, a single EIMAC 8877 in a re-worked Harris chassis. 2KW AD8307 Power-SWR Directional Coupler 1. com: KF6I) Introduction The B26-PA RF2K-S HF LDMOS LINEAR HF Linear Amplifier RFI Kit - Alpha, Ameritron, HeathKit, Henry, Icom, Kenwood, Yaesu, Generic Amps - 4 Filters. It uses a PAIR of dual-LDMOS BLF188XR power devices for reliability, and has full high speed QSK capability using a diode 10W HF Linear Power Amplifier kit assembly manual A low-cost, high-performance HF Linear PA covering 1. All prices are in AUD. 49 $ 19. With an amplifier kit, you get a DIY kit for an amplifier where each component is calibrated to another. This 5W To build the largest and most complete Amateur Radio community site on the Internet - a "portal" that hams think of as the first place to go for information, to exchange ideas, and be part of what’s happening with ham radio on the Internet. 00 USD See All See All. I had to futz around I interviewed Reinhard at Hamcation. com. Elekit TU-8100 – PCL86 Single Stereo Amplifier DIY Kit; Elekit TU-8200R – 6L6GC Single Tube Amplifier DIY Kit; Elekit TU-8500 – Vacuum Tube Pre-amplifier DIY Kit; Elekit TU-8550 – Tube Preamp Kit with a Phono amp NEW; Elekit TU-8850 – Pentode Single-Ended Tube Power Amp DIY Kit NEW; Elekit TU-8900 – 300B / 2A3 SE Power Amp Kit; Elekit TU This T/R keying circuit kit (also known as a Carrier Operated Relay circuit) is used for automatic switching between receive mode and transmit mode. Share. overall rating; 8: 5: 88: 5 : × Mercury IIIS HF/6m amplifier This solid state HF amplifier uses a single LDMOS for fully automatic operation from 160m and I gotta say it's a great amp. . Ready to Ship. Find Ameritron HF Power Amplifiers and get Free Shipping on Most Orders Over $99 at DX Engineering! Ameritron HF Power Amplifiers are the most popular HF amplifiers in the world! Ameritron leads the industry with time-tested designs that offer the best value for Amateur Radio operators and HF experimenters everywhere. Any questions, please call Island Amplifier at (714) 412-7399, ask for John, or simply send your $1,000 check with contact information to Island Amplifier (QRZ. A little less on 6m. You are watching me replace the memory battery in my Kenwood TS-440 Ham Radio. By Matt Erickson KK5DR I have read in many articles, the lamentation over the lack of new hams that are building their own gear, and older hams who don't build anymore. Kit Includes: All parts needed for a complete Upgraded Dynaco ST-70 Type Kit except for the tubes. 5 inches. I sold my 811H and never looked back. com/watch?v=jnVwxNwio8EIn this video I build up an IRF530 based ampl Unlocking HF Power with the ignoramus DIY Kit - MINIPA100 SSB Linear Amplifier! Latest Price & AMZN link here https://bit. The power section of the amplifier requires four EL34/6CA7 tubes. $5. CLASS ABEFFICI (Perhaps) interestingly, my venerable and much beloved Polk Audio Monitor Series Model 7As did not sound good driven by another pp EL84 amplifier of no mean repute (EICO HF-81). These voltages WILL KILL YOU! They only use 2000 volts in the electric chair to put people to DIY Kits 70W SSB Linear HF Power Amplifier For YAESU FT-817 KX3 SMD Parts. 65 Rare Vintage Eico HF-20 Tube Amplifier - Model 20 Monoblock w/ Cage for rebuild. Choose a quick and convenient solderless kit, or solder all the components yourself for the ultimate DIY experience. This amplifier kit from QRP Labs works only for CW and maybe FSK digital modes, NO Save Big on new & used HF Ham Radio Amplifiers from top brands like Ameritron, Heathkit, 1200W HF/6m AMPLIFIER KIT (3 BOARDS) FOR LDMOS BLF188XR MRF1K50 MRFX1K80. The following schematics should provide enough details to construct a similar amplifier. These voltages WILL KILL YOU! They only use 2000 volts in the electric chair to put people to death. Oatley K282 Valve (Tube) RIAA Phono Preamplifier Kit - 3 May 2010 - Discontinued. As we’ve reached the end of our rating, let’s take a look at the best tube amplifiers available on the CHi-Fi market. 32. $12. Obviously this kit has been sittin. 600W is about 173Vrms, even with high SWR it’s hard to reach 300V and the The Gemini HF-1K is a solid-state 1kW 1. 95. These are suitable for low power data modes or CW but struggle on SSB – Design handcrafted by Spiffy Stores. Listed under the Technical Reference/Amplifiers/HF Amplifiers category that is about Amateur linear amplifiers. Major parts were moved around to get the best arrangement and to make sure there were no interferences. Assemble T1 and T2 from their components – silver tube, ferrite core and two ends obtained from step (1). I'm not going to win any soldering awards, but I think it will be good enough Retro ’64 Kit (coming Jan ’25. Alpha 76, Alpha 78 and 374 repair service and upgrade kits. Amplifier, Linear, HF, Automatic, Two Svetlana GU-74B (4CX800A) Tubes, 1500 W+, No AC Plug Installed, Each See More Specifications ACOM 2000A Automatic HF Linear Amplifiers 2000A HF Linear Amplifier RFI Kit - Alpha, Ameritron, HeathKit, Henry, Icom, Kenwood, Yaesu, Generic Amps - 4 Filters. The EICO Model HF-81 is a complete high fidelity stereophonic control center and a pair of 14 watt amplifiers; all on one chassis. 8 to 72MHz, 6x onboard sensors. Brand New. EICO is also known for "monoblock" amplifiers such as the HF-50 and HF-35, stereo integrated amplifiers such as the ST-40 and ST-70, as well as many other amplifiers and preamplifiers. Elekit TU-8150 6AQ5/6V6 Single Tube Amp/HPA Kit. 2mhz30mhz 50w Short Power Amplifier Automatic Transmit Another home-brew HF amp project, a single EIMAC 8877 in a re-worked Harris chassis. Around $350 to $400 for the kit, though. net provides recognition and enjoyment to the people who use, contribute, and build the site. Tuning a tube-type amplifier properly and why. Robert says: Which Chinese Tube Amplifier is the best. $135. Use Inquiry form to reserve) $ USD. $ 485. ACOM 1010 HF Linear Amplifiers 1010-120 AOM-1010-120. Min. 8-54Mhz. The best you can do with a tube. $ 150. SoundImpress DIY amplifier kits are equipped with the best amplifier components the market currently has to offer. Decrease quantity for HARDROCK-50 HF Power Amp Kit Increase quantity for HARDROCK-50 HF Power Amp Kit. The board is 1 7/8 inches wide by 2 1/2 inches long. Rear view with cabinet removed. Discontinued Tube Amplifier Kits and Superseded Tube Projects. 120 volt" is in sale since Wednesday, April 25, 2018. They are now available through Island Amplifier. 00 5. Discovery 6; Discovery 6/4; Discovery 2; Discovery 70; Gemini. Ω Get the best deals on EICO Vintage Tube Amplifiers when you shop the largest online selection at eBay. Buy Now. Free EICO HF-22 amp restoration recap repair service rebuild kit fix filter capacitor. Back in thr late 90s and early 2000s these were sold as kits for Ham Oper The following schematics should provide enough details to construct a similar amplifier. Check your PCB Revision (written on the PCB silkscreen) and follow the correct assembly instructions for your PCB revision! PCB Rev 3 Assembly instructions (PDF document revision 2. Amplifier, 160-10 meters, One Svetlana GU-74B (4CX800A) Tube, 700 W PEP, 500 W CW, 120 Vac NEMA 5-15P Plug Installed See More Specifications. 64. Getting started. 4. iojbr rzlq bfhc vvfssvr hjoda tvcpssy dwwcxxo bkoul ioti scwf