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Extended Display for Elecraft's KPA500: Extended Display Unit for Elecraft's KPA500

A compact, easy to read KPA500 Digital Display Unit (DDU). It allows the monitoring of five crucial readings all at the same time.

The DDU measures only 4X4X2 with an easy to read 2 line display that can be located at the operating position and the KPA500 located up to 100 feet away.

The DDU is designed with the following features:

1. Power amplifier's heat sink temperature
2. Power amplifier's high voltage supply voltage
3. Power amplifier's current
4. Power amplifier's output power
5. SWR that the KPA500 sees at its output
6. Operate or Standby mode
7. Band amp is tuned to

All cables supplied. Easy setup.

Newest Hardware and Software. $169 plus $10 shipping.

Last one this batch.; Listing #1756522 - Submitted on 01/22/26 by Callsign KV5J, Modified on 02/03/26, Web Site: http://www.kv5j.com/store/product/digital-display-for-elecrafts-kpa500-amplifier - IP: customer.mmmiflx1.pop.starlinkisp.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Kenwood ts440 final unit toshiba 2879's: A known good final unit with a matched pair of toshiba 2879 transistors . $125.00 shipped; Listing #1757729 - Submitted on 02/03/26 by Callsign KG4WPW - IP: 156.sub-174-218-57.myvzw.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Henry SS-750 HF mobile amplifier: Nice Henry SS-750 13.8V DC HF amplifier with remote. 100 amp supply required for full output. Photo copied Manuel. I mainly used this on 75 meters. Easily puts out 750 plus watts with 100 watts drive. This one is excellent build quality. $1700 shipped FedEx. Zelle or PayPal.; Listing #1757727 - Submitted on 02/03/26 by Callsign WB1AFK - IP: mobile-107-77-223-99.mobile.att.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
FOR SALE Ameritron 811 H w/ manual & cor: I am offering for sale a ameritron 811H
Very low hours, no pets, no smoke. Works as it should. No scratches or dents. Will not ship but will meet you part way. I live in the Houston area. I will send pictures by text to your phone if you want. Asking $800.00 cash or postal money order. You can reach me at 281 630 3938 any time after 12:00 noon. Thanks Gene; Listing #1757717 - Submitted on 02/02/26 by Callsign N5ROE - IP: 47.221.93.212; Click to Contact -- Send this Ad to a Friend
FOR SALE- AMERITRON ARB-704: MFJ ARB-704 Radio to Amplifier buffer interface. This was being used with my IC-7300 that I no longer have, but can be used with most any Radio. $50.00 CASH OR WALMART MONEY ORDER. SHIPPING POSSIBLE If Buyer pays. Any Questions just ask.; Listing #1757714 - Submitted on 02/02/26 by Callsign W3IDX - IP: c-67-172-16-111.hsd1.pa.comcast.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Mercury Lite WANT TO BUY: Want to buy a Mecury Lite Amp. Someone mayby moving up and have one to part with? Only contact me through this site to discuss what you have.
Thanks Jerry; Listing #1757703 - Submitted on 02/02/26 by Callsign K9JJJ - IP: 208.157.188.31; Click to Contact -- Send this Ad to a Friend
FOR SALE: Sprauge Capacitors: Have 8 sprauge 200UF 450 volt NOS capacitors never installed $60.00 plus shipping USA only personal check or postal MO; Listing #1756070 - Submitted on 01/17/26 by Callsign N8SST, Modified on 02/02/26 - IP: syn-184-057-230-179.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Alpha 76A 2-tube $800: Alpha 76A 2x8874 amp available at Orlando Hamcation.
Cosmetically very clean. Has the low-drive mod. Should be good for 1kw or slightly less. Wired for 220v. Note - input connector is RCA connector rather than a more conventional SO239. This was common to ETO/Alpha amps of this vintage and can be changed, or you can use an adapter. Serial #6742.
$800
Pickup available at Orlando Hamcation. Will be at the FCG flea market tables. Contact me for details or with questions.; Listing #1757696 - Submitted on 02/02/26 by Callsign W4WF - IP: 108.240.195.85; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Icom IC-PW1 Amplifier: This is from my father's estate. This is is main station amplifier and was in use when I disconnected everything. Asking $1750 plus shipping and boxing. I will drop off at Fedex or UPS, have them box, insure, and ship at buyers expense. Willing to travel a reasonable distance from south west Michigan to meet up. SN #1200. I have not tested this myself, I have been out of the hobby for 25+ years, but this has been in service up to me disconnecting the station. Smoke Free Home. Please email if interested.; Listing #1757670 - Submitted on 02/02/26 by Callsign N8UGD - IP: 45-26-131-187.lightspeed.gdrpmi.sbcglobal.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
PW-1 WANTED (PARTS UNIT): PW-1 Needed for parts, Any Shape, just let me know what you have? I'll USE PayPal for payment & shipping; Listing #1757664 - Submitted on 02/02/26 by Callsign WA4SRE - IP: 152.sub-174-193-114.myvzw.com; Click to Contact -- Send this Ad to a Friend