|
|  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.
--$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
ANTHF - WTB: Cushcraft MA6B
Looking to buy Cushcraft MA6B. Due to getting burned and scammed on a past ad responses only thru QTH.com accepted. Photos, price, condtion, shipping.
Listing #1764656 - Submitted on 04/10/26 by Callsign WA3HLP - IP: 146.12.95.62.res-olt.eph.ptd.net
Click to Contact -- Send this Ad to a Friend
MISC - Icom IC-706 Separation Kit
Includes the Icom OPC-581 3.5m separation cable and MB-63 head mounting plate.
Just $149 shipped CONUS.
Listing #1764655 - Submitted on 04/10/26 by Callsign K1FIE - IP: c-50-189-24-238.unallocated.comcastbusiness.net
Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
RADIOVHF - ESTATE SALE: Radio Shack HTX-252
FS: Radio Shack HTX-252 25 watt mobile 2 meter rig. Tested full (25W) power out into my Diamond X-500 and receives fine. Testing revealed that this radio has been modified to transmit out of band. The mic cord shows signs of deterioration which is a commonly reported issue with this model. Power cord has lighter plug connection. Will be shipped with a printed owners manual. Here is a great way to have a spare 2-meter rig at a very low price!
.
$55 shipped USPS CONUS Zelle (preferred) or PayPal
.
I'm assisting the family of David Alden (WK8F), Silent Key, in finding new homes for his cherished equipment. David was a dedicated ham for many years, loved the hobby, and I've known the family for many years. More pics available on request. As with most previously owned equipment, this rig is sold "as-is".
.
More pictures: https://photos.app.goo.gl/9xMh9mcvskEiUsKd7
Listing #1764654 - Submitted on 04/10/26 by Callsign K8VL, Web Site: https://www.qrz.com/db/K8VL - IP: c-73-161-25-169.hsd1.mi.comcast.net
Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
AMPHF - 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
 POWERSUP - LORAIN COMMERCIAL 48VDC LINEAR P/S
FOR SALE ..NICE CLEAN LORAIN COMMERCIAL, 48 VDC / 25AH POWER SUPPLY. THIS IS A VERY HEAVY DUTY LINEAR, CONTINUOUS DUTY, REGULATED POWER SUPPLY FROM A PAGING SYSTEM. RUNS CONTINUOUSLY AT 48.3 VDC. PERFECT FOR THE MERCURY LITE, 600 WATT HF AMPLIFIER.
4 PICTURES AVAILABLE...ASKING $250.00 OR BEST OFFER, SHIPPED CONUS....
(HEAVY..48 POUNDS)....THIS IS A RACK MOUNT POWER SUPPLY AND IS ABOUT 20' WIDE X 14" DEEP AND 6" HIGH. I PUT THIS P/S ON THE SHELF UNDER BY OPERATING POSITION AND IT WAS OUT OF MY WAY, EASY TO TURN ON OR OFF.
(CHECK PRICES ON EBAY...IDENTICAL UNITS SELLING FOR $900-1200.00)
THANKS FOR READING
VY73'
STEVE W8CRH
SEMPER FI
Listing #1764611 - Submitted on 04/10/26 by Callsign W8CRH, Modified on 04/10/26 - IP: customer.chcoilx1.isp.starlink.com
Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
RADIOHF - MINT FLEX 8400M WITH ATU
6 MONTH OLD FLEX 8400M TRANSCEIVER AND INCLUDES THE OPTIONAL ATU. COMES COMPLETE WITH PROFESSIONALLY PRINTED AND BOUND START-UP GUIDE, THE 206 PAGE FLEX USER GUIDE AND THE 159 PAGE FLEX HARDWARE MANUAL, MICROPHONE AND POWER CORD. $4281.64 INVESTED ASKING $3700.00 WHICH INCLUDES INSURED SHIPPING (CONUS) AND A PAID UP WARRANTY TRANSFER FOR THE NEW OWNER THAT EXTENDS THE WARRANTY UNTIL SEPTEMBER 26, 2027....MONITOR IN THE PHOTO NOT INCLUDED. (THIS RADIO IS JUST BACK FROM FLEX RADIO = 100% PERFECT)..BOX OPENED UPON IT'S RETURN TO PUT IN THE MIC, POWER CABLE AND THE THREE MANUALS. (SELLING ONLY BECAUSE..IT'S TOO MUCH RADIO FOR THIS 82 YR OLD)
****** OR*******
BUY A PRE-LOVED RADIO FROM FLEX (8400M WITH ATU=$3699.00)...IF THEY HAVE ONE.
COMES WITH 12 MONTH WARRANTY....NOT 17 MONTHS LIKE MINE !!
THEN YOU PAY SHIPPING AND THE TAX ON $3699.00....MINE IS TAX FREE WITH SHIPPING
YOUR CHOICE****
73'
STEVE W8CRH
SEMPER FI
Listing #1764610 - Submitted on 04/10/26 by Callsign W8CRH, Modified on 04/10/26 - IP: customer.chcoilx1.isp.starlink.com
Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
RADIOHF - FLEX RADIO 6500
Hi I have a very nice Flex 6500 with newer 4.15 version of smart sdr this rig has 4 slices receivers $1600 also have a 6300 for $1075.00 plus shipping payment type zella or postal money order
Reason for deleting ad
Listing #1764483 - Submitted on 04/08/26 by Callsign NY3R, Modified on 04/10/26 - IP: 84.239.37.10
Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
ANTETUNE - mfj 941c
mfj 941c trans match tested good $84 shipped
i no longer use paypal
zelle,venmmo,cashapp,postal money order or check please respond only through qth system pedro wy4a
Listing #1764586 - Submitted on 04/10/26 by Callsign WY4A, Modified on 04/10/26 - IP: 71-214-215-1.orlf.qwest.net
Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
POWERSUP - mfj 4225 power supply
mfj 4225 power supply in good shape$120 shipped pedro wy4a
no paypal everything else will work please respond only via wth system
Listing #1764606 - Submitted on 04/10/26 by Callsign WY4A, Modified on 04/10/26 - IP: 71-214-215-1.orlf.qwest.net
Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
|
= Ad was Edited or Renewed 
= Original Ad
