QTH.COM Ham Radio Classified Ads: AMPHF - Swap amateur radio HF VHF equipment buy sell trade on line

Mercury 3s iiis New old stock: Purchased the amp new 1/08/22 I opened the box but never removed the amp. This is the one that has to be assembled. Never attempted. Literally new old stock. I purchased new from KM3KM. No trades cash, PayPal, cash app $2700 Thank you. Mike Trammell KE5KE. Call or text 318-691-2022; Listing #1751034 - Submitted on 11/28/25 by Callsign KE5KE, Modified on 12/02/25 - IP: 47.209.245.92; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
For Sale Alpha 87A - $3000 - no shipping: Alpha 87A - Legal limit HF amp. Excellent Condition. Serviced by Richard Byrd (N4UQ) in 2023. new transmit and receive PIN diodes. Complete service records available upon request. Minimal use since returning from service.
Priced FIRM at $3000 - No refunds due to parts swappers.
Serious inquiries only please.; Listing #1751488 - Submitted on 12/02/25 by Callsign N9FME - IP: 136.226.12.89; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Ameritron 811H Amplifier: Ameritron 811H Amplifier In good condition and operating as it should. $700.00 plus $120.00 Shipping.; Listing #1751479 - Submitted on 12/02/25 by Callsign N0ARX - IP: 38.62.162.50; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
12ea MRF300BN brand new in tube: These are brand new NXP/Freescale RF power transistors. They are N channel mosfets with incredible return loss rating, gain structure and ruggedness. Amazing power capability, many amplifiers and kits use them. I have 12 devices in the tube, sell or trade for something of similar ask value. Alinco SR8 in similar condition? Benjamin/Sheridan silver streak with teeter totter safety? email only please. I can send pictures if interested. $400 for all 12 parts.; Listing #1751466 - Submitted on 12/02/25 by Callsign K5NJP - IP: 163.116.135.158.netskope-rdns.com; Click to Contact -- Send this Ad to a Friend
WTD: INFO ON AMERITRON ALS-606 AMPLIFIER: The PA board part number B862-1300-PAREV6 causes the 50 volt P S to shutdown it will not power up with 50 volts applying to the PA board.
When I remove the red wire connecting to PA board it turns on.
Has anyone experience this problem and found the cause.
I thinking the FET's are bad transistors.
I would appreciate and help or if you have had same problem.
Thanks
Earl WA0ELW; Listing #1751444 - Submitted on 12/02/25 by Callsign WA0ELW - IP: 16.sub-174-213-251.myvzw.com; Click to Contact -- Send this Ad to a Friend
For Sale : High Voltage (Plate) Xformer: High Voltage (Plate) Transformer For Sale: 208 - 240 VAC in, 2500 VAC at 240 in. 125 in gives 1400 out. Not sure of current but at least 1A, pictures on request of it running my 2 X 3-500z amp with ease.
$200 cash only , pick-up only or deliver / meet within 75 miles of my QTH (Rosendale NY) for extra $35. Bob W2XL NO TEXTS.; Listing #1750291 - Submitted on 11/22/25 by Callsign W2XL, Modified on 12/02/25 - IP: syn-024-161-103-023.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Ameritron ALSD-1300 HF Amp: I have an Ameritron ALS1300 !60 thru 10 meter solid state amp. it will put out 1200 watts or a little bit higher. It comes with external power supply and both cabinets are in nice shape it is running on 220 volts but can be set up for 110 Volts I am asking $1400, I am in Killen Alabama. The amp is heavy so prefer not to ship but will ship if you pay for shipping; Listing #1751180 - Submitted on 11/30/25 by Callsign KB4HL, Modified on 12/02/25 - IP: c-71-207-177-122.hsd1.al.comcast.net; Click to Contact -- Send this Ad to a Friend
DENTRON CLIPPERTON L: redone 1/25 new tubes caps tuned input soft start
The Dentron Clipperton L is a classic HF linear amplifier that features a frequency range of 1.8-23.5 MHz (160-15 meters) and uses four 572B tubes. It can produce 1 KW input power for CW and 2 KW PEP input for SSB, requiring 65-150 W of drive power for full output. The amplifier runs on 117/234 VAC mains power and has a heavy-duty, desktop-style design.
Key specifications
Frequency: 1.8-23.5 MHz (160-15m amateur bands)
Tubes: Four 572B
Output Power: 1 KW (CW), 2 KW PEP (SSB)
Drive Power: 65-150 W
Modes: SSB, CW, RTTY, SSTV
Power Requirements: 117/234 VAC, 50/60 Hz
Dimensions: 6" H x 15" W x 17" D
Weight: 46 lbs
Input/Output Impedance: 50 Ohms works great PICKUP ONLY —$675–dollars pedro wy4a; Listing #1751138 - Submitted on 11/29/25 by Callsign WY4A, Modified on 12/02/25 - IP: syn-070-127-027-185.res.spectrum.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Palomar 75W HF Amp: Supports 80-10m bands, and has integrated receive preamp. Built like a tank.
$225 shipped CONUS. Good on QRZ.; Listing #1751399 - Submitted on 12/02/25 by Callsign K1FIE - IP: c-50-189-24-238.unallocated.comcastbusiness.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
150W HF Amp by Palomar 3 to 30MHz. NOS!: $299 shipped CONUS. Comes with original manual and box, and is in like new condition. 150W from 80m down to 10m.; Listing #1751397 - Submitted on 12/02/25 by Callsign K1FIE - IP: c-50-189-24-238.unallocated.comcastbusiness.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend