QTH.COM Ham Radio Classified Ads: AMPHF - Swap amateur radio HF VHF equipment buy sell trade on line

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.

--$199 plus $10 shipping; Listing #1764657 - Submitted on 04/10/26 by Callsign KV5J, Web Site: http://www.kv5j.com - IP: unn-149-88-22-77.datapacket.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
LARKIN VHF 1KW AMPLIFIERS: I have several LARKIN VHF amplifiers that can be converted to the ham bands there is plenty of documentation on the internet on this subject all you will need is the basic tools and a good capacitance meter I have information that I provide with the sale.Please respond back threw QTH.COM I am asking $250.00 plus shipping these units weigh about 35 lbs each I can have them professionally packed for shipment if you buy more then one I would consider a discount. I will except paypal or money order or personal check will ship when funds clear I will also provide tracking when it ships with a little work you can get a 1KW amp really cheap compared to spending several hundred dollars I have sold several of these and never had a complaint. These
unit came out of a working TV transmitter and there is no problems with them when we took the transmitter off the air.; Listing #1764653 - Submitted on 04/10/26 by Callsign KI0NN - IP: 198.242.36.8.nex-tech.com; Click to Contact -- Send this Ad to a Friend
FOR SALE, AMERITRON AL80B AMP: I have a new amp coming soon so my very trusty 80B is up for sale. Amp is nice condition and works like it should. Puts out 800 to 1K depending on freq and antenna. It does have a slight xfrmr hum and has had for yrs, never any problems because of that. Comes with factory box, manual, and spare 3-500zg tube. As with all electronics please no returns. Shipping is not cheap so take that into consideration. Local PU in the San Antonio Tx area would be nice. Asking $1000 plus shipping. Tnx; Listing #1764650 - Submitted on 04/10/26 by Callsign NA5AR - IP: fttp-168-182-36-99.becfiber.com; Click to Contact -- Send this Ad to a Friend
FOR SALE: ACOM 2000A AMP: Excellent condition. Purchased from the original owner. 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. $3,300.00; Listing #1764325 - Submitted on 04/07/26 by Callsign WD8NPL, Modified on 04/10/26 - IP: syn-065-024-049-063.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Drake l4b with 3 Harbach boards + supply: Demo pa used for new Harbach soft key , soft start , bias board and t/r bias relay board. Also includes a new power supply board . All boards installed , grids grounded , meter protection diode , new meter lamps no alc with mods, input rotary switch and band switch cleaned with deoxit gold
Comes with stock chimneys, anode caps and stock parasitic suppressors
RCA mod done for key line jack
Works as it should 80-40-20-15-10
Original owner enlarged cover holes in line with input tuning slugs for adjustment
Rf deck and supply covers could use a coat of paint but no dings or dents
Price is 2k no tubes and 2500 with a new set of warranteed white base penta 3-500zg tubes drop shipped from penta.
No PayPal , bank teller check or us postal money orders only . Can also pick up and pay cash but must pay ct sales tax.
Buyer provides a FedEx account for FedEx to pack and ship.
Video can be found on YouTube under Amprepairguy
If interested call; Listing #1764646 - Submitted on 04/10/26 by Callsign KB1SEL - IP: c-75-68-69-15.hsd1.ct.comcast.net; Click to Contact -- Send this Ad to a Friend
Alpha 86: I have a nice alpha 86 for sale $2000. I will not ship local pick up or I will drive a reasonable distance from my home. Thanks for looking.; Listing #1764644 - Submitted on 04/10/26 by Callsign W4HRK - IP: 69.176.24.225.cable.modem.imctv.com; Click to Contact -- Send this Ad to a Friend
Yaesu FL-7000 HF Amplifier For Sale: Yaesu FL-7000 HF Amplifier For Sale:
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The Yaesu FL-7000 is a completely solid
state HF amplifier covering 160 thru 10
meters, including the WARC bands. It
includes a very heavy duty power supply
in it, operating the final transistors
at 48 Volts DC.
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It has two very large fans that provide
plenty of cooling and are relatively quiet.
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Although it has an automatic antenna tuner
built in, it is recommended that the tuner
NOT be used.
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It does operate full break in (QSK) on CW.
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Cosmetically, it is very good. It does have
a couple very, very, very minor scratches
that you can find if you look just right.
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Electrically, it produces full power, and
works as it should.
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This amp is a brute, which means it is very
heavy -- 66 pounds before packing for shipping.
That means that pickup near Ocala, FL is very
desirable, but I can ship it if you are willing
to pay the price.
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I would like $1200 for it.-
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Thanks. 73,
Ken Simpson, W8EK
Voice Phone (352) 732-8400
.; Listing #1764642 - Submitted on 04/10/26 by Callsign W8EK - IP: customer.mmmiflx1.isp.starlink.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
FS: 4x new 2SC2652 TOSHIBA TRANSISTORS: 4x New in factory package 2SC2652 TOSHIBA TRANSISTOR for IC-2KL FL-7000 Amerirton ALS-600 Amplifiers. $295 + $5.75 shipping to USA lower 58.; Listing #1764631 - Submitted on 04/10/26 by Callsign N8FVJ - IP: 71-214-51-64.orlf.qwest.net; Click to Contact -- Send this Ad to a Friend
F.S AMERITRON AL-800H w/ spare tubes: I have an AMERITRON AL-800H amplifier in great working and cosmetic condition putting full 1.5KW+++ it comes with another spare set of 3cx800a7 with 95% efficiency on them , I'll not sell separately. I prefer local pickup or I can ship at your expense/responsibility Asking $ 1,950 ZELLE PREFER or CASH; Listing #1764626 - Submitted on 04/10/26 by Callsign N3YV - IP: syn-035-145-135-189.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Wanted; Ameritron ICP-240: Looking for a Ameritron ICP-240 Inrush Current Limiter. Thanks, Al, W4TUK; Listing #1764615 - Submitted on 04/10/26 by Callsign W4TUK - IP: syn-070-127-100-242.res.spectrum.com; Click to Contact -- Send this Ad to a Friend