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HF Amplifiers

Displaying ads 1 to 10 of 232 ads in this category.
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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 #1752043 - Submitted on 12/07/25 by Callsign N0KMR, Modified on 12/11/25 - IP: 172.58.13.74
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 Pixie 25W QRP Amplifier  
Pixie QRP amp 25W 80-15 and 10W on 10. I just purchased this on Ebay and never used it. Condx is like new. $45 shipped conus. Zelle, Paypal or personal check. 73, Dave

Listing #1752392 - Submitted on 12/11/25 by Callsign W6DMO - IP: c-73-2-37-35.hsd1.ca.comcast.net
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 Elecraft KPA/KAT500 & Yaesu FT991A  
Selling my Elecraft HF amp and Ft-991A. Doesn't get used as often as it should. Mainly used for SSB and CW. I'm more of a /P and SOTA operator. I've only used the amp with mono band double bazookas and other mono band antennas. Comes with yaesu interface cables, manuals, leather cover and heavy duty storage case. Also have a nifty manual for the 991A. As you can see the 991A has portable zero rails. When I bought the 991A, I had HRO do the MARS/CAP mod. I hate to see it go but life is happening. $3200.00
Serious inquiries only.
NOT looking for trades.
FIRM on price.
Local cash pick up.
73


Listing #1752390 - Submitted on 12/11/25 by Callsign KC1FGY - IP: 69.sub-174-224-168.myvzw.com
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 Heathkit SB 220/221 HV Capacitors/Board  
Heathkit SB 220/221 HV Capacitors/Board
Electronic Specialties Capacitors/Board
Used out of a working amplifier
$35 Shipped U.S.P.S Money Order


Listing #1752386 - Submitted on 12/11/25 by Callsign K8DJA - IP: c-68-41-235-230.hsd1.mi.comcast.net
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 Harbach Soft Key  
Built Harbach Soft Key
Shipped $35 U.S.P.S. Money Order


Listing #1752384 - Submitted on 12/11/25 by Callsign K8DJA - IP: c-68-41-235-230.hsd1.mi.comcast.net
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 4-1000A tube amp, 6KV power supply  
Sold Pending :This is a very large and well built 4-1000A tube amplifier, covers 10 through 80 meters,The 4-1000A tube is wired grounded grid and the power supply shows 6KV so it should produce some pretty serious watts, has a very big RF deck with a Jennings’s tube tuning capacitor and a double wheel roller inducter, it’s a very nice Buds cabinet, comes with a spare tube, local pickup only, could help load it and could possibly help with delivery up to a hundred miles from Augusta Maine, its about 250lbs, serious people email me for pics $675

Listing #1752362 - Submitted on 12/10/25 by Callsign WV1Z - IP: syn-074-075-105-206.res.spectrum.com
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 ELECRAFT KXPA100 AMP LIKE NEW  
Donation to radio club from SK estate. Looks like brand new. This is the
mating 100 Watt amplifier for the Elecraft KX3 transceiver.
Includes the auto tuner.
Includes brand new set of interconnecting cables (Elecraft PN 1751683).
Puts out the full 100 Watts.
Will insure for the full value.
PayPal OK. $1300 shipped to your door, CONUS.


Listing #1751683 - Submitted on 12/04/25 by Callsign K0SN, Modified on 12/10/25 - IP: syn-069-145-148-126.res.spectrum.com
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 Ameritron AL-80B  
I just acquired a 2022 build date AL-80B thats excess to my needs. I bought it to help a friend. Wired for 240 v and the 10 meter mod will be done shortly. I had the cover off and forgot it had never been done ? Looks like new in and out but it has a transformer buzz/humm more pronounced when tuning and CW mode but its there. It functions fine and puts out ample power. At this price with a good tube its still a great deal. New tubes are 350.00 and up now.
I dont have the factory box and I am looking at the possibility of shipping but its going to be expensive. I do have a box for the tube .
Pickup in Jackson,MI and I may entertain an hour one way trip to deliver to or near you.
It comes with an ARB 704 interface (really not needed ) and the factory manual.
I have tested it and it works fine . Typical 80B output .
1000.00 takes it .
Dave N8DC


Listing #1752234 - Submitted on 12/09/25 by Callsign N8DC, Modified on 12/10/25 - IP: c-24-127-73-12.hsd1.mi.comcast.net
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 need help om4000 hf linear  
thanks to chase in Kentucky
i bought this om4000 used installed and only half the hi voltage amp max 1.5 kw replaced 4 blown sma 5a fuses installed new tubes cooked in and tested normal 3kw plate


Listing #1752251 - Submitted on 12/09/25 by Callsign KE8ARM, Modified on 12/10/25 - IP: 123net-static-residential-gdrpmi-pool1.123.net
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 HEATHKIT SB-200   
I have for sale a Heathkit SB-200 amplifier that I would call a project amp. No tubes are included. I have many pics with the cover off.
When plugged in it did have high voltage and that's as far as the testing went.
I have an HL-2200 so I don't need this one. I prefer local pickup and I am located in central Wisconsin
$275.00


Listing #1751950 - Submitted on 12/06/25 by Callsign KC9LDP, Modified on 12/10/25 - IP: 209.94.186.244
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