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

**KPA500 RF Power Monitor/WiFi remote**: **KPA500 RF Power Monitor**

*Real-time monitoring for Elecraft KPA500 owners*

Six critical parameters — Power, Voltage, Current, SWR, Temperature, and Band — displayed simultaneously on a high-contrast 256×64 OLED. No menu cycling. No squinting. 10 updates per second.
Built-in WiFi streams live data to any smartphone, tablet, or browser — no app required. One-time 5-minute setup. Access locally via *kpa500.local* or remotely via Tailscale from anywhere in the world.

✦ 500ms intelligent peak hold on power output
✦ WebSocket web interface with retro terminal aesthetic
✦ Remote Power ON/OFF and Operate/Standby control
✦ Over-the-air firmware updates
✦ OLED works independently of WiFi — always
Plug-and-play RS-232 connection. No amplifier modifications. Assembled and tested. Cables included.

**4″ × 2″ × 4″ · 9–14.8V DC · 100mA**

*Built by hams, for hams.*

---$199 plus $10 shipping; Listing #1761436 - Submitted on 03/09/26 by Callsign KV5J, Modified on 03/18/26, Web Site: http://www.kv5j.com - IP: customer.mmmiflx1.isp.starlink.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Command HF-2500 Export: Great shape. Legal limit++ output
This is a two tube model
Rear of amp says: Not Intended For Sale or Use in U.S.A
$2200 Shipped Insured USA; Listing #1761210 - Submitted on 03/07/26 by Callsign KL7AM, Modified on 03/18/26, Web Site: https://kl7am.com/ - IP: 216.137.241.122; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
FOR SALE: AMERITRON AMPS.: FOR SALE; AMERITRON HF AMPS All in working condition ALS 1200 ALS 1406, AL 82 AL 1500 AL 80A email or call for more info and prices. Will drive a reasonable distance w5wec38 at gmail.com 870 759 2626; Listing #1761973 - Submitted on 03/14/26 by Callsign W5WEC, Modified on 03/18/26 - IP: host4-231-170-68.xipline.com; Click to Contact -- Send this Ad to a Friend
QRO 2500DX Amplifier: Great condition!
160-10 Meter Amp
1,500 Watts out on 10 meters with 15 watts drive.
Legal limit plus++
$2250 shipped/insured US; Listing #1761954 - Submitted on 03/14/26 by Callsign KL7AM, Modified on 03/18/26, Web Site: https://kl7am.com/ - IP: 238-196-137-216.mtaonline.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Acom 1000 Amp HF + 6: I have a Acom 1000 for sale. Has a new Tube and fan installed. Letting it go because I have a 1500 now. Asking $2500 Boxed and ready to go.Pickup or can ship at your expense as I have all boxes and will be double boxed.; Listing #1762321 - Submitted on 03/17/26 by Callsign W9XX - IP: syn-024-208-065-200.res.spectrum.com; Click to Contact -- Send this Ad to a Friend
Have a Pair of Mercury Lux Amps: (Back on the market both amps)
1.This amp is brand new. Never used. I took it out of the box and put it on the table. The current price is $4278 and currently not in stock plus shipping... I will sell this one for $4000 and split shipping. No waiting on the manufacturing process, save $300...Here is your chance to get a really great amp and no wait time!
2 This amp has been in my station for a year. For this one $3600 plus split shipping. Interested, give me a call and let's talk.
Rick NQ4I cell is 678-595-6235 (and I have a pretty powerful spam filter so be patient); Listing #1761126 - Submitted on 03/06/26 by Callsign NQ4I, Modified on 03/17/26 - IP: c-73-207-79-89.hsd1.ga.comcast.net; Click to Contact -- Send this Ad to a Friend
DRAKE L-4B HF AMPLIFIER W POWER SUPPLY: EXCELLENT CONDITION, RECAPPED POWER SUPPLY, DRAKE L-4B AMPLIFIER WITH MANUAL AND BOXES. ONE OWNER SILENT KEY BEING SOLD BY W4OT VERO BEACH AMATEUR RADIO CLUB, CAN BE DELIVERED TO THE STUART HAMFEST 3/21/26 $950
MN-2000 AND C-4 CONSOLE ALSO AVAILABLE; Listing #1758720 - Submitted on 02/11/26 by Callsign KK4GGJ, Modified on 03/17/26 - IP: c-67-191-53-208.hsd1.fl.comcast.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Relays REV-15 75oHm 1500watts to 650mHz: Hi everybody!
Selling absolutely NEW REV-15 relays factory packed at a price of $30 per one. Number of relays (more than one or four together) weighing up to 1Kilo parcel shipping costs will be ~25$(to U.S.A.) by Nova Poshta, with insurance and tracking number. Relays absolutely new, working voltage is 24-27Volts, 75oHms, supports 1500 Watts of power until 650MHz, minimal life 12 years when working in any device. There are needed number of new relays for sale. When purchasing a quantity (more than 5 pieces), a discount is possible by agreement. Payment on Pay-Pal ut5rp at te.net.ua Discount is possible! All questions buying and payment by E-Mail or tel/Viber +38 067 699-17-05 Thanks for reading ad and for a possible purchase for offered price, it will help me a lot in this very difficult time for me as for pensioner with monthly pension less than 100$US. See my other ads.
73's de Dmitry UT5RP; Listing #1762254 - Submitted on 03/17/26 by Callsign UT5RP - IP: 188-163-101-191.broadband.kyivstar.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Vacuum high voltage capacitors: Hi everybody!
I will sell vacuum capacitors according to the following list and
contractual prices close to the prices of the store for each item
and even lower ~30$US each.
Payment on Pay-Pal ut5rp at te.net.ua
With questions about price, payment and
forwarding by e-mail or phone/Viber +380 67 699-17-05
25pF x 15kV 2pieces
50pF x 15kV 3piece
Thank you for reading the ad and a possible purchase for
offered price, it will help me a lot in this very difficult time
for all of us here in Ukraine.
73's de Dmitry UT5RP since 1959; Listing #1762253 - Submitted on 03/17/26 by Callsign UT5RP - IP: 188-163-101-191.broadband.kyivstar.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Als 600 Ampliifier,with ALS-600ps: Ameritron Solid State 600 with the 10,12 meters installed. ALS-600ps 50 volt power supply $1150.00. The price includes shipping lower 48 USA. Will be Double boxed and,well packed with manual. Amplifier works well with Antenna tuner or a resonate antenna. Will accept USPS Money order or personal check. All sales are final no returns. Thanks (Sold Pending Funds); Listing #1761659 - Submitted on 03/11/26 by Callsign KU4I, Modified on 03/16/26 - IP: c-71-62-192-53.hsd1.va.comcast.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend