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RADIOHF - KAT500 Antenna Tuner Display Unit: Finally — See What Your KAT500 Is Actually Doing

Your KAT500 is working hard. Wouldn't it be nice to know exactly how hard?

The KAT500 Antenna Tuner Display puts six critical parameters on a crisp, high-contrast OLED screen — SWR before and after tuning, mode, antenna port, range, and L/C component values — all updating in real time, every 200ms.

Mount it anywhere in the shack. See your match quality at a glance. Know instantly whether your tuner is in Auto, Manual, or Bypass. Confirm which antenna is selected. No menus. No squinting at the front panel.

Plus wifi viewing from anywhere.

Plug into the KAT500's serial port, connect power, and you're done.

$199 plus $10 shipping· Assembled & tested · RS-232 cable included
2-year warranty · 10-day returns; Listing #1762618 - Submitted on 03/20/26 by Callsign KV5J, Modified on 03/22/26, 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
ANTHF - For sale: B&W 40m-2m portable ant: For sale:
Used but still in good condition B&W 40m-2m antenna---$75 shipped.
The Barker & Williamson AP-10A is a compact, portable, base-loaded HF antenna designed for renters, travelers, and field operators, covering 7 through 30 MHz (40-10 meters) plus 2/6 meters. It supports 300 watts CW/SSB, featuring a telescoping whip (up to 57 inches) and a 35-foot counterpoise wire, allowing mounting on windows, chairs, or tables; Listing #1762798 - Submitted on 03/22/26 by Callsign NR6AM - IP: ws-207-213-21-72.car.org; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
MISC - D104 gets new life = Replace thr Element: W2ENY D-104 HiFi MIC ELEMENT UPGRADE KIT
My custom design modernizes your old Astatic D-104
Design supports G stand, UG8, TUG8, TUG8, TUP9
This kit is direct wired and bypasses the amp board, needs no 9V battery - ham radios only that have voltage on the mic connector (check your manual).
Works perfect on all my Icoms, will work fine with newer Yaesu FTDX too. This listing is for the element, bias resistor and color instructions. $24 shipped with paypal.; Listing #1762797 - Submitted on 03/22/26 by Callsign W2ENY - IP: pool-70-18-60-105.nycmny.fios.verizon.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
MISC - Radiosport RS60 to Flex cable: Radiosport CS6FLX-PTT headset cable for RS60 headset to Flex 6xxx/8xxx radios. $75 shipped CONUS, PayPal preferred.

Lou, W0FK; Listing #1762793 - Submitted on 03/22/26 by Callsign W0FK - IP: syn-071-085-210-083.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
MISC - Slipp-Nott: Original Slipp-Nott. Used on both a tailtwister and on a 3-El Steppir to prevent slippage of the mast or antenna boom. With literature and use instructions. $175 shipped CONUS, PayPal preferred. Lou, W0FK; Listing #1762569 - Submitted on 03/20/26 by Callsign W0FK, Modified on 03/22/26 - IP: syn-071-085-210-083.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
MISC - Collins/Drake Connectors and more: Selling a few leftover Drake/Collins connectors, 3-wire mic cord with connector and 2 Drake feet. Picture shows what is included. Sold only as a package. $100, PayPal preferred. Lou, W0FK; Listing #1762678 - Submitted on 03/21/26 by Callsign W0FK, Modified on 03/22/26 - IP: syn-071-085-210-083.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
RADIOHF - Compact Headset w/Mic for Icom 7300: Compact Two Earphone black Headset for Icom has a clean sounding electret element.
Perfect for POTA, SOTA, Field Day, travel or Home use.
Features great sound with full range audio, I've been getting excellent 'ON AIR' audio reports.
20Hz-20kHz headphones 100Hz-16kHz high impedance electret mic element, 6ft cable. Use on VOX or PTT (switch not included but available).
The custom package is complete and ready to go - mic, speaker and ptt pigtail is all thru the 8 pin ROUND mic connector.
Headset can be worn with the mic on the left or right side and swivels from below front to top.
Compact and lightweight for minimum fatigue, maximum comfort
Delivers punchy, good-sounding audio without costly outboard electronics and adapters. Move about your shack hands-free while maintaining optimal voice-to-mic proximity.
Perfect for contesting, Field Day $45 shipped.
I list this with HF-Radio cause it's for Icom HF and there is no headset category.; Listing #1758164 - Submitted on 02/07/26 by Callsign W2ENY, Modified on 03/22/26 - IP: pool-70-18-60-5.nycmny.fios.verizon.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
RADIOHF - Yaesu Ft/900/at: For Yaesu Ft-900 with automatic tuner
built-in in good working condition $ 480.00 ship. From 160 to 10 meters, 100 watts
output,microphone,dc cord & clean ship.
Thank you,
gideon; Listing #1762723 - Submitted on 03/21/26 by Callsign K7OHM, Modified on 03/21/26 - IP: 172.56.187.219; Click to Contact -- Send this Ad to a Friend
ANTETUNE - Palstar/Kessler at auto tuner: At auto in good condition no issues has been converted to two coax outputs. $900.00 shipped to lower 48 states.Paypal preferred payment method.; Listing #1761044 - Submitted on 03/05/26 by Callsign N4SQB, Modified on 03/21/26 - IP: syn-098-030-193-155.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
AMPHF - alpha 374 amplifier $400.00 no tubes: alpha 374 amplifier sold as is for parts tubes have been removed all parts are there except tubes. high voltage comes up,fan and relays operate. s/n 8147.
That's all I know about it. $400.00 plus actual cost of shipping, or
pickup in southern IN
paypal preferred payment method.; Listing #1762779 - Submitted on 03/21/26 by Callsign N4SQB - IP: syn-098-030-193-167.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend