|
 AMPHF - 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 #1764657 - Submitted on 04/10/26 by Callsign KV5J, Modified on 04/14/26, 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
- DIGITAL - MMDVM Hotspot For DMR C4FM & Others $95
- Latest WPSD software, works simplex or duplex. Recently built, new complete tested. Supports DMR, P25, D-Star and System Fusion. Raspberry pi 3B with Duplex MODEM and OLED display. You can use WIFI or ethernet. I built it on a plexiglass base with rubber feet, I also a red plastic case version that fits well. Size of a pack of cigarettes $95 shipped. The little one is a pi zero 2 w metal case with wifi only $85 Shipped. Comes with USB power cord if you need power supply add $10. Comes mostly configured or I can program for you with some additional info. I have over 50 years in electronics. TNX Steve K9CZ Paypal FF or send a check. I'm good on QRZ.
- Listing #1764617 - Submitted on 04/10/26 by Callsign K9CZ, Modified on 04/14/26 - IP: c-98-220-50-113.hsd1.il.comcast.net
- Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
- AMPHF - Ameratron ALS-606 Solid State HF Amp.
- ALS-606 Hf amp. 160-6 meters 600 Watt Output. Works and looks 100%
Light weight Power Supply (Switcher) I have all boxes.
$1300 Shipped or Pickup (in Florida) WA3QCV Tim 386-931-5709
- Listing #1764898 - Submitted on 04/13/26 by Callsign WA3QCV, Modified on 04/14/26 - IP: syn-097-101-064-013.res.spectrum.com
- Click to Contact -- Send this Ad to a Friend
 RADIOHF - FOR SALE:Anan 7000dle MKII Black Edition
- Apache Labs 7000dle MKII Black Edition
Anan 7000dle MKII Black face model. Near mint condition, presently running the latest Thetis software with Protocol 2. Works flawlessly, non smoking environment, sits on a shelf in a temperature controlled rack, no issues. Used to drive an amp with pure signal, never run over 50 watts. Cleanest transmit signals on the bands and the NR receive features are excellent. Comes with power cord $2700. PayPal OK plus fee, personal check OK, will ship after check clears. Sorry no trades. Will split FedEx or UPS shipping with insurance in lower 48 only.
- Listing #1765011 - Submitted on 04/14/26 by Callsign K2AQ - IP: host-24-112-11-108.vyvebroadband.net
- Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
- ANTHF - Mosley Beam classic 33 Beam Ant Free
- Mosley Classic 33 Beam and Cushcraft 11 element 2 Meter Beam.
Work fine. Must take down from well guyed Rohn 25G Tower.
I have climbing belts, Gin Pole at rope. All Free
- Listing #1765009 - Submitted on 04/14/26 by Callsign W8NB - IP: 173-84-247-142.bng01.wlng.wv.frontiernet.net
- Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
- RADIOHF - CR2032 Battery with solder tabs
- new memory batteries for hf/vhf/uhf radios and any other uses for this battery
buy 4 for 12.00 shipped
paypap
- Listing #1764949 - Submitted on 04/13/26 by Callsign KC9DZ, Modified on 04/14/26 - IP: c-68-45-190-179.hsd1.in.comcast.net
- Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
- RADIOANQ - Conar 400/500 twins
- Working vintage novice transmitter and reciever.
$200
More pictures on request.
- Listing #1765007 - Submitted on 04/14/26 by Callsign K7EZ - IP: 172.56.211.244
- Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
- RADIOVHF - TYT MD-9600 DMR/Dual Band
- Up for Sale is the TYT MD-9600 DMR/Dual Band(Non GPS). This is an amazing DMR Radio loaded with the OpenG77 Firmware and codeplug as well a flash drive with the original firmware, donor files, CPS etc. Radio included Car Power Cable, Programing Cable, Manual and OEM Box. Asking $150.00 shipping included. Payment via Zelle, Money Order or PayPal(Extra Fee's will apply) Contact me for details if interested. My email is good on QRZ and other platforms. 73's de K1MCO
- Listing #1765003 - Submitted on 04/14/26 by Callsign K1MCO, Web Site: https://www.qrz.com/db/K1MCO - IP: 151.165.212.93
- Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
- RADIOVHF - Kenwood TM-V71 Dual Band
- Mint Condition with very little use and never mobile. Original box and contents, Stock mic and new MC-62 mic. Smoke free and pet free.
One of the best dual-banders with true duplex - great for Sats!
$350 shipped Lower 48. PayPal and I pay fee. No Returns for usual reasons.
Thanks for looking!
scott ~ K4IBX
- Listing #1765002 - Submitted on 04/14/26 by Callsign K4IBX - IP: nc-69-68-74-217.dyn.embarqhsd.net
- Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
- MISC - WTB:Bird Termaline Coaxial Resistor Load
- Looking for a Bird Termaline model 8251 or 8866 coaxial resistor (RF Dummy Load) fitted with either N-connector or SO-239 UHF connector. Willing meet for pickup up to 100 miles from Austin Texas. All Email responses must come through QTH directly, all others ignored.
Tnx & 73.
- Listing #1764400 - Submitted on 04/07/26 by Callsign W5KVA, Modified on 04/14/26 - IP: ec2-18-88-0-238.compute-1.amazonaws.com
- Click to Contact -- Send this Ad to a Friend
|
= Ad was Edited or Renewed 
= Original Ad
Previous 10 Ads
Next 10 Ads 
