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 #1763051 - Submitted on 03/24/26 by Callsign KV5J, 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
RF2K-S For Sale $4900 + ship: Purchased 8/2025, gently used about 160
hours.
Just back from a warranty repair of a manufacturers defect (LDMOS was not heat sinked properly .. now resolved).
$4900 plus shipping. Lower 48 only.
I’m a Flex Radio station and am going with the Flex PGXL.
Ed W2MKM
908-881-4567; Listing #1763041 - Submitted on 03/24/26 by Callsign W2MKM - IP: 76.117.215.19; Click to Contact -- Send this Ad to a Friend
Amp Supply LK 500 160-15 meters: Works good looks good
A good solid 1kw 50 watts drive on low bands 65 or so on 20 meters
Low grid current pull at 1 kw
3-500 zg tubes
I am looking for 850 I will not ship
I will drive up 250 miles or so to deliver
Some trades possible
Listing what I am looking for
Yaesu FT891 plus $
Icom 7100
Kenwood 480 sat $
Icom 5100 plus $ or other gear
Icom 2730 plus $ other gear
Ic7300 this one depends on radio and accessories
Thanks for reading
It will be up for about 2 weeks; Listing #1763040 - Submitted on 03/24/26 by Callsign KE5FAQ - IP: 146.12.250.247; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Mercury Lux Amplifier: I have a beautiful Mercury Lux amplifier that I am selling because I decided to move to an amplifier with a hefty auto-tuner built in. I have never had it on the air but it is beautiful. (see the pictures) Located in Northern California - So you can pick it up or I can ship it via UPS. Asking $3,800 plus $85 shipping within the US. Payment via Paypal. Comes with power cable and manual. Runs on 115V or 230V power.
Contact Jeff AK6OK 916-205-2200; Listing #1763029 - Submitted on 03/24/26 by Callsign AK6OK - IP: 172.92.17.82; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
For Sale JK Phantom 40/20 yagi: For Sale “. JK PHANTOM “. 4 full size elements (74 feet each ) for 40 meters . 5 Full size elements on 20 meters. With boom truss and balum 425 lbs on a 48 Ft double trussed 3 inch boom. Close to 40 Square Foot of wind load. Good for 100 mph.
New price is $8400 plus freight of $600-800
A $9000 plus antenna. Need a good tower to use this yagi.
I’ve got 3 of these. Will consider sale of one. Still assembled pre owned.
Will sacrifice for $4200.00. !!
Serious inquiries only will need to be disassembled. If you’re not familiar with a big commercial type yagis you need to study up on this yagi.
Call me if interested. I’m listed in details in this ad. Cash or personal check. Scammer please don’t call with same old message!!!
73
Loyd
WB4BMQ
“Sweet Home Alabama “; Listing #1762555 - Submitted on 03/20/26 by Callsign WB4BMQ, Modified on 03/24/26 - IP: syn-066-168-162-096.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Want to Buy Flex PGXL 3-1: I am looking for a 3x1 Flex PGXL. Want to sell? I want to buy.
de Rick NQ4I
cell 678-595-6235; Listing #1762979 - Submitted on 03/24/26 by Callsign NQ4I - IP: c-73-207-79-89.hsd1.ga.comcast.net; Click to Contact -- Send this Ad to a Friend
XIEGU XPA125B Amp with Extras: This is a as new, original purchaser XIEGU XPA125B latest version with latest firmware. Comes with a Plug-N-Play cable for the XIEGU 6100 & 6200, Yeasu FT817/818 cable and a Prism Embroidery dust cover all the way from the UK. Played with it about an hour with the X6200 and G90 and it worked great. Now it sits on my radio "trophy" shelf like a lot of my whim purchases. Amplifier will work with most QRP rigs, MAX input is 5 watts. You get everything in the picture, original box, manual, cables and custom dust cover. All shipped lower 48 for $500 + shipping. Payment via Venmo Friends. check, USPS MO or cash picked up. I don't have Zell, PayPal or Cash App. Contact me for payment details. More pics shown on QRZ.com classifieds. 73 de Rick; Listing #1762806 - Submitted on 03/22/26 by Callsign AC4VM, Modified on 03/24/26 - IP: 99-140-116-7.lightspeed.knvltn.sbcglobal.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
ELECRAFT KPA500 AMPLIFIER: I have for sale this nice working KPA500 500-watts HF/6m amplifier.
Price is $2200; Listing #1762906 - Submitted on 03/23/26 by Callsign K2ZZ, Modified on 03/23/26, Web Site: https://youtu.be/mNWu5nthcKk - IP: 104.28.236.175; Click to Contact -- Send this Ad to a Friend
Ameritron AL-80B: AL-80B in excellent condition. Single 3-500Z has full output. No signs of abuse, front panel and cabinet are excellent. Never around smoke. One issue is the output meter is inoperative.
$800 pick up in Mesquite NV or Las Vegas; Listing #1762958 - Submitted on 03/23/26 by Callsign KB9SI - IP: 228.sub-75-223-95.myvzw.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
FOR SALE: OM-2000A+ W/ Spare Tube: OM Power OM-2000A+ HF Plus 6 Meter 1,500W+ Auto Tune Linear Amplifier. This AMP is used on my Back Up Station and it is time to downsize. AMP works fine and will include Manual and Spare Tube. Spare Tube is Used but with plenty of life on it. Most Hours are in Standby Mode and NOT Operational. Serial Number 17016. Software Version: 5.37, Tube Serial Number: 2201025. Wired for 240 VAC with Plug. Will NOT Ship but will meet any and all buyers in the Florida, Georgia and Alabama Areas. Price $4400 Firm; Listing #1762889 - Submitted on 03/23/26 by Callsign N4RWG, Modified on 03/23/26, Web Site: https://www.qrz.com/db/N4RWG - IP: 72.15.135.59; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend