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Displaying ads 1 to 10 of 3356 ads matching your search
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RADIOHF - 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 #1763890 - Submitted on 04/02/26 by Callsign KV5J, Modified on 04/06/26, 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  TEST - FS: TEKTRONIX 484 Oscilloscope   From the shack of Jim/K4BSE, the Southeastern DX Club is assisting to sell his equipment. Jim says the oscilloscope is clean & in good working condition. Asking $300 & u-ship/ Listing #1764272 - Submitted on 04/06/26 by Callsign W4NT - IP: syn-035-129-189-022.res.spectrum.com Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend  MISC - BX-184M – MH-31 mic voice keyer kit   For Sale - BX-184M UNBUILT kit – An MH-31 microphone integrated voice keyer, a voice keyer completely integrated into a standard microphone! Use it to call CQ when band is slow to save your voice! No additional box as you need the microphone anyway. And no additional weight as the used components weigh less than the original innards of the microphone. Surface mount parts already installed on the PC board, this "M" version includes a new microphone shell so the kit is complete. Adds punch to QRP radio audio. $55 shipped Priority Mail, PayPal OK. Listing #1764271 - Submitted on 04/06/26 by Callsign AE0Q - IP: 24.9.67.178 Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend  ANTVHF - WANTED: Satellite Antenna ? Looking for an Easy‑to‑Use Satellite Antenna for This Summer Hey everyone — I’m hoping to get on the satellites this summer, but I’m running into a few limitations and could use some advice or maybe even a used antenna if someone has one they’re not using. I can’t afford the Arrow handheld satellite antennas, and I no longer have the dexterity to build something like a Moxon or Arrow‑style yagi myself. I operate from a wheelchair, so whatever I use needs to be easy to hold or mount on a tripod. If anyone has: - A lightweight handheld yagi - A tripod‑friendly satellite antenna - A simple homebrew design you have built Let me know! Listing #1764270 - Submitted on 04/06/26 by Callsign KE4DTC - IP: 108.59.63.16 Click to Contact -- Send this Ad to a Friend  ANTETUNE - Icom AH-730 Tuner    Excellent condition AH730 tuner. This is Icom's upgraded replacement for the AH-4. * Original owner, purchased Xmas 2024. Used sparingly to match a 27ft vertical. Never out in the elements. All of the original stuff including unused control cable. * $450 shipped CONUS. PPFF, check, or USPS Money Order. (Additional pix at the website below) Listing #1764042 - Submitted on 04/04/26 by Callsign WB7X, Modified on 04/06/26, Web Site: http://www.WB7X.net - IP: ip24-251-197-114.ph.ph.cox.net Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend  RADIOHF - Icom UT-102 Voice Synthesizer   Sold Pending. Icom UT-102 Voice Synthesizer Module option that works in these and some other Icom radios. IC-706 all series, IC-821H, IC-746, IC-756PRO, R75, IC-910H, IC-R8500. $145 shipped to any of the lower 48 states. Any questions call 301-233-0910. Thanks, Dave N3EJT Listing #1764041 - Submitted on 04/04/26 by Callsign N3EJT, Modified on 04/06/26 - IP: 145.sub-174-219-236.myvzw.com Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend  TEST - WANTED! NYE VIKING 5000w RF METER WANTED NYE VIKING RFM 005 5000w RF POWER METER IN ALMOST ANY CONDITION! I will buy from MINT to JUNK! ONLY REQUIREMENT: THE 5000w RF POWER METER MOVEMENT ITSELF MUST BE INCLUDED. John Kimbrough WR3S Nash. TN. 615.714.0041 cell call/text best or Email at the below address Listing #1764269 - Submitted on 04/06/26 by Callsign WR3S - IP: 68.53.165.165 Click to Contact -- Send this Ad to a Friend  RADIOHF - FOR SALE: IC-725 with accessories    Have a nice Icom IC-725 for sale with the AM/FM board installed. Mars mod is done. Also would include a power supply, LDG tuner, and external speaker, plus a SM-6 microphone. Of course with all cables. I don't have a hand microphone, or the original box but would be packed good and double boxed. Would like to get Will ship and insure to the lower 48 states. Would like to get $375.00 for the package deal. PayPal with 4%, or a postal money order. 73 Mark W9MKM. Phone Number is 608-548-2727 call or text. Listing #1764178 - Submitted on 04/05/26 by Callsign W9MKM, Modified on 04/06/26 - IP: 209.79.168.54 Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend  RADIOHF - Kenwood TS 590s   I have a kenwood ts 590s for sale. Comes with power wire and mic. Radio seems to be in pretty good shape has some marks on the back like there was tape there not sure, tried to wipe off but couldnt get it. See in pics. 475.00 OBO Local pickup. WILL SHIP AT YOUR EXP Listing #1763535 - Submitted on 03/29/26 by Callsign KC3KVF, Modified on 04/06/26 - IP: c-73-117-1-147.hsd1.pa.comcast.net Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend  RADIOHF - For Sale Kenwood TS-440 Kenwood TS440 hf radio No A/T or filters Good cosmetic condition good output and display But not on 20m, and 30m goes to dots. This is a good project radio sold as is. 200.00 plus shipping USA only. Check or usps money order 73 Carl Ks4ij Listing #1764267 - Submitted on 04/06/26 by Callsign KS4IJ - IP: 162-193-144-146.lightspeed.dybhfl.sbcglobal.net Click to Contact -- Send this Ad to a Friend

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