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RF Concepts - Professional Amateur Radio Amplifier Repair
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HF Amplifiers

Displaying ads 11 to 20 of 207 ads in this category.
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KA9FOX Wishlist on Amazon.com

 Tl922 by me Amprepairguy   
New Harbach filter cap board with Kemet screw in type caps, New Harbach t/r bias relay board, grids grounded , meter protection diode , series glitch for plate supply, new max gain systems Teflon so-239’s, new electrolytic cap for 120 vdc relay supply , low inductance stability mods , rotary contacts cleaned , 10 meter mod already installed by another
3k no tubes 3500 with a new set of white base penta tubes drop shipped to buyer from penta
Buyer pays packing and shipping on amp
Bank teller check or money orders. If close enough can pick up and pay cash but must pay ct sales tax. Video on YouTube plus will supply video of working on one band of choice
I have two avaliable
Amprepairguy / Harbach electronics


Listing #1766050 - Submitted on 04/25/26 by Callsign KB1SEL - IP: c-75-68-69-15.hsd1.ct.comcast.net
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 FOR SALE: ACOM 2000a AMPLIFIER  
Excellent condition. Purchased from the original owner.Great autotune amp with built in tuner. Legal limit plus. Check out eham reviews. Produced 2011 according to Acom. Works as it should but sold "as-is". Includes manual on disk.No shipping. Pickup 43074 or can deliver to Dayton. Will also drive within reason to meet.Because all the mope scammers are running amuck pse respond via contact button. All others ignnored. $3,200.00

Listing #1766049 - Submitted on 04/25/26 by Callsign WD8NPL - IP: syn-065-024-049-063.res.spectrum.com
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 Al1200/al1500/al82 band switch new   
Incredibly rare new never used al1500,al1200,al82 band switch
650 shipped
Bank teller check / us postal money order
Last one
Amprepairguy / Harbach electronics


Listing #1766048 - Submitted on 04/25/26 by Callsign KB1SEL - IP: c-75-68-69-15.hsd1.ct.comcast.net
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 For Sale: DX World 500 Watt LDMOS Amp  
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For sale DX World E 500 watt LDMOS amp, 5 watts in gets 500 watts out, in excellent condition, no scratches, has not been around tobacco smoke. Comes with Mean Well 48 volt power supply in as new condition. Price: $1250. Pickup or meet in the Indianapolis, Cincinnati or Dayton area. ** NO SHIPPING **
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This is a low drive amp, was used with a Hermes-Lite 2.
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*** Could deliver to Hamvention/Xenia on May 15 or 16 if paid for in advance. ***
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Payment by Zelle (preferred), money order, check or cash. No PayPal.
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Per QTH rules contact me thru this site not direct email. Click on "Click to Contact" below. or call my phone.
.


Listing #1766010 - Submitted on 04/25/26 by Callsign N9VX - IP: 46-110-46-0-179.metronet.net
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 KPA500 RF Power Monitor  

KPA500 RF Power Monitor — Real-Time OLED Display for Elecraft KPA500

Six critical parameters, always visible, updating 10×/second on a high-contrast 256×64 OLED. No menu cycling. No squinting.

Monitors: Power Output (0–700W) · PA Voltage · PA Current · SWR · PA Temperature · Band + Operate/Standby

3×2 grid layout — large fonts sized for quick reading across the shack.

Direct RS-232 integration via MAX3232 — no amplifier modification required.

Specs: XIAO ESP32-C3 · SSD1322 256×64 OLED · 9–14.8V DC · 100mA · 10 Hz update rate · 4″ × 2″ × 4″

Free Bonus: Built-In WiFi — web interface mirrors the OLED with a retro green-on-black aesthetic, updated via WebSocket. Includes Power, Operate/Standby, Fan Speed, and Band controls plus OTA firmware updates. Access via kpa500.local — no app required. OLED operates independently of WiFi at all times.

Includes: Assembled & tested unit, DC power cable, RS-232 cable, quick start guide.

--$229 plus $10 shipping


Listing #1765967 - Submitted on 04/24/26 by Callsign KV5J, Web Site: http://www.kv5j.com - IP: mobile-107-77-199-165.mobile.att.net
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 WTB Kenwood TL-922a
Looking for a Kenwood TL-922a in New England area. Would be in person sale. Must perform a working demonstration and don't want an amp with scuffs/blemishes. Would have to allow a thorough internal inspection. I don't want to have an amp shipped to me. I live in MA - willing to drive to ME,NH,VT,NJ,CT or PA for the right deal.

Listing #1765936 - Submitted on 04/24/26 by Callsign KC1TQN - IP: 199.180.213.74
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 SPE Expert 1.3-FA Solid State Amplifier  
I have decided to sell some of my equipment, so I am selling my amplifiers and some radios. I have cables from KC5PCB for the Icom 7610, 7600, 7300 and 7100. These cost me $90.00 each but they are included.
I really hate to part with this amp as it is fantastic with so many different ways to connect to your radio or in that case radios.
When I bought this amp, I read the reviews from several different sources but the one from Mark Wilson K1RO at ARRL sold me on it.
https://www.linear-amplifier.com/
Expert 1.3K-FA User Manual
https://www.spetlc.com/images/download/1-
I can't begin to tell you all the features and ways you can operate or connect to your computer.
It has four (4) antenna connections and will operate SO2R if you are a contester.
I comes with the original carrying case and I have padded boxes and, it will be doubled boxed and insured.
I am asking $2795.00 must sell reduced to $2450.00


Listing #1765164 - Submitted on 04/16/26 by Callsign W4GKM, Modified on 04/24/26 - IP: syn-035-132-235-067.res.spectrum.com
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 WTB: DUD 4-400, 3-500 OR SIMILAR TUBES   
WANTED FOR PROJECT;
BURNED OUT, OPEN FILAMENT OR GASSY 5 PIN POWER TUBES LIKE THE 4-400, 3-500, 5867 OR SIMILAR TUBES. 304TL/H 4 PIN TUBES ALSO NEEDED.
Can do a check, USPS MO or PayPal.
If you are going to TARC this Saturday, bring some DUDS!!! Thank you.
Prefer local sale since shipping is so high, but ship is OK.
Check out my items and very good Feedback, too!
email to jtg4300 at yahoo.com
73, WA1BRI
J. Griffin


Listing #1765492 - Submitted on 04/19/26 by Callsign WA1BRI, Modified on 04/24/26 - IP: 47-199-186-130.fdr01.stgr.fl.ip.frontiernet.net
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 For sale: Eldico ssb-1000f amp  
For sale:
Good working and nice condition Eldico ssb-1000f amp---$200, pick up in San Diego.


Listing #1763227 - Submitted on 03/26/26 by Callsign NR6AM, Modified on 04/23/26 - IP: ws-207-213-21-72.car.org
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 FS: Tokyo HL-200BDX Mobile HF Amplifier  
I have for sale this excellent condition Tokyo HL-200bdx 200-watts HF amplifier. The amp comes with power cord and remote head with cable.
It has selectable power input levels.
Price is $900


Listing #1765551 - Submitted on 04/20/26 by Callsign K2ZZ, Modified on 04/23/26 - IP: 172.59.209.38
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