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RADIOHF - 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.

Only 1 left.

Newest Hardware and Software. $199 plus $10 shipping.; Listing #1754136 - Submitted on 12/30/25 by Callsign KV5J, Modified on 12/31/25, 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
MISC - FOR SALE - Mic Boom with 12” mount: FOR SALE: Mic boom with 12” mount
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This boom set is surplus to my needs, is in excellent condition and built
to broadcast/commercial specs.
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O.C. White — ProBoom Deluxe Mic Arm with Riser -. Provided with a 5/8-27 threaded mounting stud to hold virtually any microphone in a stable position.
Overall reach of this model is 29", and comes with standard 12" vertical riser. It will hold up to 2 1/2 # mic.
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* Specifications: 
* Reach 29"
* Mounting Stud 5/8-27 threaded mounting stud
* 12” vertical riser accepts up to 1/2” boom stem.
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This package NEW sells in the $215.00 range + shipping + taxes.
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My price is $100.00 + $15.00 shipping to CONUSA.
Zelle and PayPal ok for payment.
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Tks
John
WA4AIP
53+ YEARS HAMMING
.; Listing #1754058 - Submitted on 12/29/25 by Callsign WA4AIP, Modified on 12/31/25 - IP: user-69-73-45-35.knology.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
ANTHF - WTB Ameritron RCS10 or CQ Radio Altair-8: I just picked up two of these wired/remote antenna switches. Looking for either the original switch (altair-8) inside the shack switch or ameritron 8 position switch box (NOT the remote side).
This is the shack control unit: https://cqradio.ru/products/altair-8
This is the remote: https://www.ebay.com/itm/136152701044
If anyone has the schematic for the altair-8, I would greatly appreciate that as I am looking to use the shack switch box on 12vdc, not 220.
Thanks and Happy New Year All!!! Cheers!!; Listing #1754272 - Submitted on 12/31/25 by Callsign W2ENY - IP: pool-70-18-60-5.nycmny.fios.verizon.net; Click to Contact -- Send this Ad to a Friend
MISC - ICOM FL-52A / FL-45 - YAESU XF-30A Fltr: ICOM FL-52A / FL-45 - YAESU XF-30A Filters
From Left to Right:
FL-52A - ( 500 Hz ) - Removed from working IC-761 - $ 130.00 -( Pending Funds )-
FL-45A - ( 500 Hz ) - Removed from working IC-740 - $ 100.00
XF-30A - ( 2.4 KHz ) - Removed from working FT-101E - $ 50.00
Prices include (CONUS) shipping via either USPS / UPS Ground.
PayPal (G&S) / USPS MO preferred - Check Ok but No Ship until cleared.; Listing #1754087 - Submitted on 12/29/25 by Callsign W6SDW, Modified on 12/31/25 - IP: syn-076-175-204-014.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
RADIOHF - FOR SALE Icom IC-7300: Perfect condition. Seldom used.
The transceiver comes with the Icom HM-219 Hand mic, Icom power cord all in original Icom box and packing material. Respond through QTH respond link.
ad corrections to clarify and remove typos.
Selling several ham items to fund 3D printer purchase.
$725
Jim N2GO; Listing #1754181 - Submitted on 12/30/25 by Callsign N2GO, Modified on 12/31/25 - IP: 65.56.244.213; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
RADIOHF - kenwood ts 570 DG: radio very good condition clean, mar cap manual ,mic,powercord
sell 525.00 shipped, maybe trade hf rig you ship i ship on tracking numbers; Listing #1754271 - Submitted on 12/31/25 by Callsign N4ERL - IP: syn-035-150-252-140.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
MISC - Bunnell double speed key, type W: Bunnell double speed key, type W, Cootie Key, very good condition. Works great.
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The key looks to me as if it were in a museum, since the plexiglass cover (not shown) has no exit for the wires. I took it out of the case, but cover and wooden base are included in the sale. There are enough letterings left after years of being polished to affirm it is a Bunnell (above shorting bar in this picture).
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To the best of my knowledge, these were produced 1906 to 1926.
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This would be a great addition to anyone's collection, as these are very rare. Other pics available.
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Paypal preferred, (other methods ok), $300 OBO, $15 shipping CONUS. Might trade for Begali/Schurr/N3ZN key, etc.; Listing #1754160 - Submitted on 12/30/25 by Callsign AC5D, Modified on 12/31/25 - IP: dynamic-23-151-80-67.tekwavisp.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
ANTVHF - ELK ANTENNAS 2m/440L5 portable beam: Elk 2m/440L5 beam. 5 element, 24" beam. Brand new, one month old, never outdoors. Original package, paperwork. UHF connector. $120 shipped US. USPS money order, personal check. Thanks. Rich. WR3V; Listing #1754270 - Submitted on 12/31/25 by Callsign WR3V - IP: 73.178.10.76; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
RADIOVHF - Kenwood TS-711a: 2 meter multimode transceiver with advanced features and power output is adjustable from 2 to 25 watts, tones for repeater access. Includes DC power cord and hand mic.$350+s/i; Listing #1753761 - Submitted on 12/26/25 by Callsign N5RAH, Modified on 12/31/25 - IP: c-98-48-121-39.hsd1.nm.comcast.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
MISC - Kenwood MC-44 DTMF, Touch Tone Mic FS: Kenwood MC-44 DTMF, Touch Tone Mic For Sale:
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The Kenwood MC-44 is a Hand Microphone with 16
digit DTMF Touch Tone Pad, and a round 8 pin
plug for Kenwood, Alinco, etc.
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This hand mic works great on most Kenwood rigs
with the round 8 pin connector, such as the
TS-440, TM-241, TM-2530, TW-4000, and others,
including Alinco and ADI. It says "Electret
Condenser Mic" on the back, and "Kenwood" on
the front.
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Basically, this mic functions like an MC-43,
with a couple more features. It has the mic
and PTT switch; it also has up/down switches
on the top. There are four "extra" buttons
labeled Call, VFO, MR, and PF on the front.
What these four buttons do depends on the rig.
There is also a "Lock" switch on the back.
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Regardless if you use the four extra buttons
or not, you still have a mic that works like
an MC-43.
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This mic works 100%, and looks great.
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Buy it with manual for $30 plus shipping from
Florida.
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Thanks. 73,
Ken Simpson, W8EK
Voice Phone (352) 732-8400
.; Listing #1754269 - Submitted on 12/31/25 by Callsign W8EK - IP: fl-67-76-85-5.sta.embarqhsd.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend