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HF Amplifiers

Displaying ads 11 to 20 of 225 ads in this category.
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 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
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 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
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 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
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 AMERITRON 811\811H WANTED PARTS
LOOKING FOR PARTS FOR 811 OR 811H AMP DOES NOT NEED TO WORK SOME THING SITTING AROUND THE SHACK THAT IS BROKEN YOU WOULD LIKE TO MOVE. LET ME KNOW WHAT YOU HAVE AND WHAT YOU ARE LOOKING TO GET FOR IT.
TIM VA3TIC


Listing #1751369 - Submitted on 12/01/25 by Callsign VA3TIC - IP: bras-base-kgtnon0881w-grc-138-76-68-71-79.dsl.bell.ca
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 Ameritron ALS-600 Amplifier  

Ameritron ALS-600 Amplifier. Rated 160-15M, 600 watts PEP, 400 watts CW. I do not believe this one has the 12-10M modification, but have not opened it to check (the AUX position is silent on receive, indicating that the mod has not been installed). Amp works and and appears to be operational, but sold as is. $975 net to me, pick-up only in St. Louis, MO at this time. Very heavy and expensive to ship. Lou, W0FK


Listing #1751366 - Submitted on 12/01/25 by Callsign W0FK - IP: syn-071-085-210-083.res.spectrum.com
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 Display Unit for Elecraft's KPA500  

Digital Display Unit for Elecraft's KPA500

A compact, easy to read KPA500 Digital Display Unit (DDU). It allows the monitoring of five crucial readings all at the same time.

The DDU measures only 4X4X2 with an easy to read 2 line display that can be located at the operating position and the KPA500 located up to 100 feet away.

The DDU is designed with the following features:

Easy to read 2 line display
No USB or serial cable to computer
No com port in Windows to manage
No computer needed
Plug and Play
Simply connect the supplied DC power cable to power supply and PC data jumper cable to the KPA500
Retains all functions of the KPA500 front panel
All displayed info obtained directly from the KPA500

All cables supplied. Easy setup.

Newest Hardware and Software. $199 plus $10 shipping.




Listing #1751046 - Submitted on 11/28/25 by Callsign KV5J, Modified on 12/01/25, Web Site: http://www.kv5j.com - IP: mobile-107-77-198-26.mobile.att.net
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 QRO - 2000 Amp/ No Mods/160to 10/ 100%  
QRO HF-2000 Amp >$ 2100 > CASH SALE ONLY , Not a mark on it has 2 X 3-500ZG Tubes Less than 20 Hours On them > and 2 > Pulls from another Amp that are 80%> Power out > From Non smoker ,Full Legal Limit ++ > Peter Dahl transformer >4100 Volts on the Plate> Have the Manual and Work Sheet and the Boxes > Can Meet up to 60 Miles from Lynchburg VA or U can come to My location to Pick it UP and see it working Wired for 220 Volts

Listing #1749873 - Submitted on 11/18/25 by Callsign K2BUR, Modified on 12/01/25 - IP: 172.59.117.173
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 EIMAC 8877  
Eimac 8877 tube tested in my ameritron al 1500 has full output,been running it for the last month no issues. $675 dollars shipped
I NO LONGER USE PAYPAL
ZELLE,venmmo,cash app, postal money order,or check PEDRO WY4A


Listing #1750952 - Submitted on 11/28/25 by Callsign WY4A, Modified on 12/01/25 - IP: a172-225-251-146.deploy.static.akamaitechnologies.com
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 Nice Ameritron AL-811 $600  
Great condition! This is one of the newer models with the highly desired updates from Ameritron (i.e. LED lights, Sealed RF Relays, etc). Tubes are in good shape and have a lot of life left in them. It is wired for 120V so it will work great in your shack. Local pick-up only - I've just not had good luck shipping amps. If you stop by my shack I would be happy to show you how it works! $600 - No trades please. My contact info is all good on QRZ! Thanks for looking and 73

Listing #1750877 - Submitted on 11/27/25 by Callsign N0KMR, Modified on 12/01/25 - IP: 172.56.12.78
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 SWAN AMP WANTED
Looking for Swan 1200 amp don't matter what kind of shape it is in. Darryl Williams KS4PC I am not in QRZ 352 727 3356

Listing #1751273 - Submitted on 11/30/25 by Callsign KS4PC - IP: h111.113.89.75.dynamic.ip.windstream.net
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