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 RADIOHF - Elecraft KRX3 K3 Sub Receiver - Sale 
- ELECRAFT K3 K3S KRX3 SUBRECEIVER - OPTION -
$269 delivered check , Zelle, or PP FF ok.
$229 with a k3 or P3 purchase.
Removed from a working radio - see list of what you get :
SUBRECEIVER
DSP BOARD
MIXER BOARD
NOISE BLANKER BOARD
KNB3 SUBIN BOARD
KNB3 SUBOUT BOARD
4 TMP CABLES
HARDWARE
KSYN3 - Original version SYN board.
Please see pictures of everything included.
This is a stock picture,as I had 2 of these.
I think everything in this option kit is unavailable at this time from Elecraft,and may never be made again .
Will fit your K3 or K3S rig. If installing in a K3s, or a K3 with a newer SYN board,you will need to get a newer KSYN3A board.
I usually have these in a separate listing.
I think these were around $800 when available.
You will need to obtain filters if you need them,but they are easy.
I have them listed in a separate listing.
Happy to help you if you are not 100% sure how to do this !
Larry k6ro
- Listing #1760366 - Submitted on 02/27/26 by Callsign K6RO, Web Site: http://www.K6RO.com - IP: 99.37.36.186
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 RADIOHF - FS: DRAKE PLUG FOR 34-PNB NOISE BLANKER
- For Sale: This is the Jumper Plug for the 34-PNB Noise Blanker when it is not installed. It completes the receiver circuit in the TR-4C series radios. See photo.
This is the same 7 pin plug used in the R-4C, but that has different wiring.
$18.00 plus $3.95 shipping in the CONUS. Email me for overseas shipping cost.
Your check or USPS MO; I am gd in QRZ.
PayPal me at my email address (jtg4300 at yahoo.com)
Just let me know that payment is on the way and I will ship and get you the Tracking number.
I also have the 9 pin version used for ACCY in some rigs like the Kenwood; see separate ad.
See my other ads for a new Scope Probe, more RF parts, Simpson, Drake, UNGAR and other gear.
Will combine shipping, where possible.
- Listing #1756880 - Submitted on 01/26/26 by Callsign WA1BRI, Modified on 02/27/26 - IP: 47-199-186-130.fdr01.stgr.fl.ip.frontiernet.net
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- BOOKMAG - F/S LAFAYETTE LITERATURE
- All are original unless otherwise noted. Prices include mailing in the USA
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10% OFF THE SUM OF THE INDIVIDUAL PRICES IF YOU PURCHASE 2 OR MORE.
20% OFF THE SUM OF THE INDIVIDUAL PRICES IF YOU PURCHASE 5 OR MORE.
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MANUALS
HA-73A - $8
HA-350 copy - $10
HA-750 - $10
HA-1200 - $10
HE-20A copy - $10
HE-30 - $12
HE-30 copy - $10
HE-40 copy - $10
HE-45 copy - $10
HE-45A Sales Flyer w/schematic - $7
HE-45B - $10
HE-50 - $10
HE-50 copy - $9
KT-135 copy "Expor-Air 4 Band Receiver Kit" - $10
Explore-Air Mark V copy - $10
KT-223 - $8
P-50A & P-100A - $8
P-450 - $8
PF-200 - $8
- Listing #1755107 - Submitted on 01/08/26 by Callsign K3DUA, Modified on 02/27/26 - IP: pool-108-50-43-148.bltmmd.fios.verizon.net
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- RADIOHF - For Sale SDRplay Dual Tuner.
- For Sale sdtplay dual tuner RSP duo, in excellent working, Frequency 1khz to 2ghz 14 bit dual tuner Receiver, Asking $160, Payment Zelle or USPS Money Order, Thanks for Watching, 73..
- Listing #1759144 - Submitted on 02/15/26 by Callsign AG6F, Modified on 02/27/26 - IP: customer.mmmiflx1.pop.starlinkisp.net
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- RADIOHF - FS: TECSUN PL-600 w/case, ant, ps, etc
- Nice listening. I've even used it to track RFI. Very clean. Includes soft case, power adapter, earphone, manual, external wire antenna, & Panasonic Ni-MH batteries. $75. including shipping to standard USA addresses. Dual-conversion superheterodyne receiver for high sensitivity and selectivity.
600 non-volatile station memories with auto-tuning storage (ATS) for FM and MW.
Large, bright LED-backlit LCD display with clear frequency and signal strength indication.
Built-in rechargeable Ni-MH battery system with a timer-controlled charging circuit.
External antenna jack for FM and SW, plus a built-in ferrite bar antenna for AM/LW.
Three antenna gain settings (DX/Normal/Local) and two bandwidth options (6 kHz wide, 4 kHz narrow) for improved signal separation.
Noise-free tuning via VFO button and smooth side tuning knob.
- Listing #1760285 - Submitted on 02/26/26 by Callsign KD4E, Modified on 02/27/26 - IP: 168.182.104.187
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- BOOKMAG - Original Yaesu Manuals For Sale
Original Yaesu Manuals For Sale:
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These are the manuals only. All are originals,
and not copies.
Most are in close to new condition.
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FNB-9,10,11,12 Battery packs, $2
FC-757AT Antenna Tuner, $10
FRG-9600 VHF/UHF Receiver, $12
FT-100 HF/VHF Transceiver, $18
FT-470 Dual Band HT, $10
FT-707 HF Transceiver, $15
FT-720 R, 2 meter mobile, $8
FT-757 GX, HF Transceiver, $18
FT-991 HF/VHF/UHF Xcvr, Extremely good copy in binder
FT-1802 M, 2 meter mobile, $12
FT-2700 Dual Band Xcvr, $12
FTH-2005 HT, $5
FTS-8 tone squelch unit, $3
FTS-12 tone squelch unit, $3
MH-1B A2B speaker microphone, $2
VX-1 dual band HT, $10
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These are original Yaesu operating manuals only,
in very nice condition.
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SPECIAL:
Buy two, three, or four and take 10% off.
Buy five or more and take 20% off.
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Prices do not include shipping from Florida.
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Thanks. 73,
Ken Simpson, W8EK
Voice Phone (352) 732-8400
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- Listing #1760299 - Submitted on 02/27/26 by Callsign W8EK - IP: customer.mmmiflx1.isp.starlink.com
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- RADIOHF - FS: Kenwood SP-31 with PHITS kit upgrade
- I have for sale a Kenwood SP-31 with the upgraded speaker and PHITs sound enhancements. Comes with original box.
Price is $150
Payment via Paypal, zelle, money order, or check.
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The Kenwood SP-31 is a high quality external speaker with audio filtration. It is 8 ohms, can handle up to 2 watts and has a normal frequency response of 160 Hz to 7 kHz. This speaker may be used with virtually any communications receiver or transceiver. The SP-31 features a 4 inch (10 cm) speaker in a metal enclosure. The switch in the upper the right corner can select from two audio input sources. The three switches on the lower right activate two high (HIGH 1, HIGH 2) cut and one low (LOW) cut audio filters. This allows you to tailor the frequency response of the speaker system.
- Listing #1753147 - Submitted on 12/19/25 by Callsign K2ZZ, Modified on 02/27/26 - IP: 104.28.204.175
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- MISC - FS: JRC NVA-88 speaker
- The Japan Radio Company NVA-88 speaker matches the JST-135 and other JRC receivers and transceivers. It comes with a shielded audio cable wired into it. The speaker is working fine and is clean looking with minor scratches on the top.
Price is $110. payment via paypal or zelle
- Listing #1759481 - Submitted on 02/19/26 by Callsign K2ZZ, Modified on 02/27/26 - IP: 104.28.236.175
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- RADIOHF - FOR Sale: QCX
- -Original QCX transceiver with BaMaTech enclosure, 80 m transceiver with port for the included QLG1 gps receiver module for use on WSPR digital mode . Radio is in great shape and work as it should. Manuals are available on the QRP labs site. No returns due to parts swappers. Asking $80.00 for all shipped CONUS.
Thank You
- Listing #1760288 - Submitted on 02/27/26 by Callsign N8HN - IP: syn-047-026-041-088.res.spectrum.com
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- RADIOHF - FS: Drake R8 Receiver
- Excellent condition Drake R-8 communications receiver. Works as it should with no issues electrically or cosmetically. $375 + shipping CONUS. PayPal preferred but personal check OK (but will delay shipping until cleared).
- Listing #1760279 - Submitted on 02/26/26 by Callsign W7YAZ - IP: 172.59.203.226
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