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RADIOHF - Elecraft KSYN3A Updated Synthesizer K3: Elecraft KSYN3A K3 K3S UPDATED Synthesizer Option board.
$339 delivered - check or PP FF ok.
If you want to upgrade your K3 to close to a K3S,you may want this.
Or,if you are adding a sub receiver to your K3S,you will also need one of these.
I can sell it for $15 less,if you send me your older Syn board that you are replacing.
I also buy other older boards that you are may no longer need.
These have been discontinued at Elecraft.
Comes with manual.
Please see pictures for more details.
Local pickup is also fine.
I can be reached through email if you have questions.
Larry k6ro; Listing #1743979 - Submitted on 09/23/25 by Callsign K6RO, Modified on 10/31/25 - IP: syn-067-253-101-060.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
RADIOHF - Kenwood DSP-100 Unit DSP100: Like new, with copy of manual.; Listing #1748006 - Submitted on 10/31/25 by Callsign N5JSP - IP: pool-100-40-123-240.prvdri.fios.verizon.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
RADIOHF - Swan 250C with Powers supply & Manual: For sale is a Swan 250C (6 meter) comes with the 117xc power supply. A Copy of the Operation and Maintenance Manual is also included $250 FIRM - PICK UP ONLY - White Plains NY; Listing #1748004 - Submitted on 10/31/25 by Callsign KA2OFM - IP: ool-43518538.dyn.optonline.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
RADIOVHF - For Sale 2 HRI-200: I have for sale 2 Yaesu HRI-200s. One was used for maybe a week and the other one is NIB never used. Can send pics if needed they come with what was in the box. Will sell both for 175.00 shipped for the pair. Sales in the CONUS only at this time. Payment by Zelle USPS MO or check after it clears. Thank's and 73 K4DJQ John; Listing #1748002 - Submitted on 10/31/25 by Callsign K4DJQ - IP: 172.59.115.91; Click to Contact -- Send this Ad to a Friend
ANTETUNE - Cubic mobile antenna tuner: Selling my CUBIC (Swan) MMBX Mobile Tuner. Impedance matching device, intended for mobile or fixed use. Operating from 2 to 50mhz. Ok for about 500watts. Asking $25 OBO + shipping.; Listing #1747795 - Submitted on 10/29/25 by Callsign AD6GE, Modified on 10/31/25 - IP: 71-135-217-141.lightspeed.irvnca.sbcglobal.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
RADIOHF - Elecraft K3/100 Transceiver # 4727: Elecraft K3/100 High Perf 160-6m Transceiver KPA3 2.8 # 4727 100 Watts
$1599 delivered - check, Zelle, PP FF ok.
This was my first K3 that I bought in 2018.
I was a kenwood/yaesu guy until then.
I sent it to Elecraft for mods and updates,and used it for a year before I bought a new K3S for 6k :(
Since then it has been sitting on my shelf.
Checked it out today..made some q's,and here you go.
Great radio..
Missing the side handle,but that is an easy deal.
Serial # 4727
100 Watts
TUNER
2.8 upgraded SSB filter
KIO3
KXV3B Upgraded I/O Preamp $275 alone
TCXO ! $125 for this upgrade
Gold front panel pins
Lots of mods done at Elecraft .
Latest firmware installed. 5.67
Works as it should.
Good condition.
Power cord
Used it today on CW and SSB.
If you are looking for a great radio without lots of options that you won't use,this may be for you.
And if you want a K3 with more options,I have many to choose from.
Local pickup is also fine.
I can be reached via email for more info,
Larry k6ro; Listing #1748000 - Submitted on 10/31/25 by Callsign K6RO - IP: syn-067-253-101-060.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
RADIOHF - Studio Boom Mic w/boom accessories NEW: New in the box.
Black Studio Boom Microphone with mounting accessories (see pic).
Comes with mic, 8ft of shielded mic cable (has PTT pigtail jack, PTT switch not included), scissor arm boom, mic holder, foam mic cover, anti-pop screen, desk clamp.
XLR mic cable terminates to your radio's 8 pin round or modular RJ mic jack, this is a custom cable that's wired for your radio - Icom, Yaesu, Kenwood, Xiegu, Flex, sBitx and others - let me know which one to wire to.
Phantom voltage for the mic element comes from your radio thru the mic connector, no external wall wart or phantom power supply is needed.
I like to have the boom going above with the mic hanging downward, best hands free operation with no desktop clutter - a foot switch is a great option (not included, sold separate), that's all I use here.
$60 shipped, paypal to w2eny at yahoo.com; Listing #1742102 - Submitted on 09/05/25 by Callsign W2ENY, Modified on 10/31/25 - IP: pool-70-18-60-5.nycmny.fios.verizon.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
TUBES - Solid state tube replacements REDUCED: Solid state tube replacements:
Sarkes Tarzian S5130 866 replacement 6ea $15 each
Sarkes Tarzian S5343 866 replacement 3ea $15 each
1N2138 5y3, 5v4, 5z4, 5u4 replacement 7 ea $10 each
Semtech STR 4b32 replacement $20 each
All plus shipping; Listing #1746117 - Submitted on 10/13/25 by Callsign K6ZIV, Modified on 10/31/25 - IP: c-174-160-187-166.hsd1.ca.comcast.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
TUBES - RCA 6JG6A Sweep Tube: I don’t know what rig uses this sweep tube as a final. It was in a lot of tubes I picked up. May be new or used, not certain but the plate looks clean and undamaged. Askimg $20.00 plus shipping costs,; Listing #1747993 - Submitted on 10/31/25 by Callsign W1RC - IP: 185.190.141.161; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
RADIOVHF - Yaesu CT-162 remote head separaton cable: This is an after-market Yaesu CT-162 separation controller cable that is 8 feet long. I "lost" my original cable and bought an after-market cable which I no longer need.
Remote head separation cable CT-162 equivalent for Yaesu FTM-400DR, FTM-400XDR, FTM-100DR 4 Pin Heavy Duty Cable. This is not a Yaesu product.
Price is $18 OBO including shipping in CUSA.; Listing #1747301 - Submitted on 10/24/25 by Callsign K2RMA, Modified on 10/31/25 - IP: syn-024-182-073-208.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend