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

FOR SALE: Dentron Clipperton-L Amp: Dentron Clipperton-L HF Amplifier. Good condition. Includes 10m modification. Manual also included. Wired for 240 VAC operation (or "234 VAC" as the manual says). Age of 572B tubes is unknown, but they are showing signs of age with somewhat lower output power than new tubes. Measured power into dummy load:
1.815 MHz 400W
1.915 MHz 425W
3.515 MHz 500W
3.875 MHz 500W
7.015 MHz 700W
7.250 MHz 750W
14.015 MHz 700W
14.300 MHz 725W
21.015 MHz 750W
21.400 MHz 750W
28.015 MHz 600W
28.600 MHz 600W
Amp is heavy - will not ship. Pick-up ONLY within SE PA/South Central PA/SNJ/Northern DE/NE MD areas.
Can deliver at VWA Winterfest on 3/15
Asking $500 cash or PayPal.; Listing #1758168 - Submitted on 02/07/26 by Callsign N3NR - IP: c-73-81-13-93.hsd1.pa.comcast.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
FOR SALE: ETO-Alpha 78 Amplifier: Alpha 78 S/N 8824. Excellent condition. Age of tubes unknown. No sticky paint. Has 10m modification only. Includes manual. Features Bandpass preset for 80m - 15m (CW/Phone sections). Manual tuning on 160m and 10m, as well as 80m - 15m.
Measured Pout (Pin 65W, Dummy Load, Ig<50 mA):
Frequency, Pout Manual, Pout Bandpass
1.815 MHz, 1033 W
1.915 MHz, 1029 W
3.515 MHz, 1038 W, 500 W
3.875 MHz, 1037 W, 570 W
7.015 MHz, 1075 W, 579 W
7.25 MHz, 1052 W, 599 W
14.015 MHz, 1120 W, 626 W
14.3 MHz, 1104 W, 696 W
21.015 MHz, 1027 W, 507 W
21.4 MHz, 1068 W, 769 W
28.015 MHz, 1031 W
28.6 MHz, 1082 W

15m Gain 11.92 dB.
Pick-up ONLY SE PA/South Central PA/SNJ/Northern DE/MD/NoVA areas. Can deliver at VWA Winterfest on 3/15.
$1200 cash or PayPal.; Listing #1758166 - Submitted on 02/07/26 by Callsign N3NR - IP: c-73-81-13-93.hsd1.pa.comcast.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Ameritron ALS-1300: Pending sale.
I have from an ESTATE , A working ALS-1300. Just fully dummy load tested on all bands 1kw plus output.
Has 10m board.
Requires 240- volts.
I have the box for the amp, but not for the power supply.
Amp does have a few scratches and scuffs.
Can send pics upon interest.
This is pick up only.
Asking $1500.00; Listing #1758015 - Submitted on 02/05/26 by Callsign KW4LN, Modified on 02/07/26 - IP: 50.25.154.237; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Palstar LA-1K Amp wanted: Looking for Palstar LA-1k Amplifier in mint condition, full output, no scratches or scuffs. Prefer original double boxes. Please send pic as there have been several models of these and the logo position has changed. Also send first 4 digits of serial number please. Contact me through here at QTH.COM. Also send phone number. I cannot do business with anyone who will not provide their phone number (cuts down on scammers, of which I've had many answering this ad.) Thanks; Listing #1758153 - Submitted on 02/07/26 by Callsign KK8ZZ - IP: ec2-13-58-69-202.us-east-2.compute.amazonaws.com; Click to Contact -- Send this Ad to a Friend
Alpha 76a: I have here a really nice alpha 76a that has been converted to 3cx800a7's .
The tubes MIGHT have 5 hours talk time on them . This amp has had 6:1 planetary drives installed on both load and tune controls for easy tuning . It has had the low drive modification performed .plate current meter doubling shunt .the Wattmeter upgrade . Plus the 10 meter mod . All modifications were performed by dick byrd . Price is $1800.00 plus shipping or it can be picked up at the dalton hamfest . I might even do some trading if you have something that REALLY catches my eye . This is a really nice amp . If treated right it should be the last amp you'll ever have to buy; Listing #1758134 - Submitted on 02/07/26 by Callsign KG4WPW - IP: 47.sub-174-218-57.myvzw.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Heathkit HF Amplifier w 2X3-500 Tubes: One used Heathkit H.F. Amplifier, the SB220 using two of the 3-500 tubes
currently wired for 120VAC and can be change easily to 220 VAC. Keying
was modified for low voltage keying. For sale at $915.00 plus shipping.
Preferred local pickup in Southern California. I am good on QTH call sign lookup
as W6BBA and address is current. If local pickup with cash, I will include Free,
the Heathkit Power/SWR meter shown in the picture!, that is worth $150! A
bargain, so I don't have to ship it! Thanks for looking at my ads. 73's; Listing #1758132 - Submitted on 02/06/26 by Callsign W6BBA - IP: 104-11-235-174.lightspeed.irvnca.sbcglobal.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Amp Supply LK500ZC 1 KW 160M-10M $800: The amp is an early model and does not have the WARC bands. It runs a pair of Amperex 3-500s. It will load up on 17 m with 700 watts out with no difficulty when the band switch is on 14 M. The ALO board has failed and has been bypassed. The ALO circuit was designed to detect unsuitable loading conditions and shuts down the amp. Despite this, the amp operates as expected. A new rectifier board (new caps, diodes, resistors) has been installed. High voltage is 3000+ VDC. The amp is in excellent physical condition – no dents, minor hairline scratches. The photo shows 1 KW output on 14m. More photos on request. Shipping options: free pick up in Boulder CO or I will drive up to 3 hours from Boulder CO to deliver the rig for $75 or buyer makes his own shipping arrangements at his expense. Because of the amps’s weight and possible damage during shipping, I will not box up the amp and ship it but will deliver it to a local shipper. $800 Cash or USPS money order only.; Listing #1757872 - Submitted on 02/04/26 by Callsign N3AJB, Modified on 02/06/26 - IP: c-73-243-93-108.hsd1.co.comcast.net; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
Amp Supply LK550 (3) 3-500Z amp: Selling my amp supply LK550.. 160-10M keeps blowing one of the fuses with all the tubes out sold as is. Peter Dahl plate and filament transformer. 2 out of the 3 eimacs are ok and included with the sake. I will not ship but will meet in Massachusetts to deliver. Email me for pics . This is a 2 piece unit.. $1500; Listing #1758122 - Submitted on 02/06/26 by Callsign W1CJF - IP: 151.240.45.96; Click to Contact -- Send this Ad to a Friend
QRO-2000 w/ New Penta tubes: QRO-2000 in perfect condition. Brand new Penta 3-500ZG tubes installed 1/14/25. The amplifier works as it should. Come try it out or will ship at buyers expense in three boxes. $2000 OBO. Also have a FT-2000 listed separately that I will make a deal on together.; Listing #1756131 - Submitted on 01/18/26 by Callsign W4EKY, Modified on 02/06/26 - IP: 170.85.92.202; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend
keying module two amps /replacesARB704: $80.00 plus shipping Paypal Zelle
will key older high voltage/modern low voltage amplifiers this is a low input ptt one transceiver to two amplifiers will key two modern or older amps no cable swamping. safe full isolation PTT optocoupler 100% electrical isolation from your modern radio. 12vdc operation has standby switch. comes with power pigtail. will work great in line with your Ameritron ARB704 RCA jumper from ARB704 to the RK102 now you equipment is safe and isolated. you can mix and mach old and new amplifies; Listing #1758093 - Submitted on 02/06/26 by Callsign KJ6VRC, Web Site: https://www.qrz.com/db/KJ6VRC - IP: customer.snjecax1.isp.starlink.com; Click to Contact -- Click Here to View Picture -- Send this Ad to a Friend