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HF Amplifiers

Displaying ads 21 to 30 of 225 ads in this category.
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 QRO-2000 Amp./no Mods 160 To 10 Mtrs   
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 #1751998 - Submitted on 12/07/25 by Callsign K2BUR - IP: 172.59.117.173
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 FOR SALE: SB-220/221 Multimeter  
Monitors Plate Voltage, Grid Current, and Relative Power. This meter could possibly fit other Heathkit models. It's in pretty good condition with some light scuffing on the lens.. It comes with the original box as packed in the container from Heath. Asking price is $55 shipped. For more information, please reply via email or phone calls only, no texting. Thanks, Nick Gans KM5FL

Listing #1751124 - Submitted on 11/29/25 by Callsign KM5FL, Modified on 12/07/25 - IP: h127.74.141.67.dynamic.ip.windstream.net
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 FS: 30L-1 amplifier PS & relay board   
Be ware of cheap off-shore copy version at some auction sites. The made in China copy version selling higher than my price.Choose the original since 2007. The best reputation 30L-1 power supply board for $75 Plus $13 for USPS priority mail.Board uses 1000V 3A diodes in series, and 105 deg C caps, 4 times of life compared to 85deg C caps, 220 uF 6 of them. The Heat sensitive caps are under pc board while the Heat generating bleeder resistors are above the PCB, no chance that Heat damage the capacitors. assembled and tested. Relay board changes original -170V, 70mA to -15V 1mA or less. If you use relay controlled radio for the 30L-1, Relay board is a must.Price $30, Ripple filter for relay and bias22uF 250V and 1K ohm .01 uF 630V reduction high 60hz ripple bias supply & another 22uf Bias cap & MOV protection.


Listing #1744063 - Submitted on 09/24/25 by Callsign K6HM, Modified on 12/06/25 - IP: 75-37-192-218.lightspeed.lsatca.sbcglobal.net
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 For Sale: Alpha 87A HF Amplifier   
Alpha 87A HF Auto-tune amplifier in excellent condition. 1.8 to 29.7 MHz. Full power with 2 - 3cx8007 tubes.
Latest firmware updates. $3300. Comes with original shipping carton and manual. From nonsmoking environment. Can be picked up in Inverness Florida, or shipped if buyer pays shipping, or it's possible to bring it to the Tampa hamfest in Plant City on Dec.12th or 13th.


Listing #1751968 - Submitted on 12/06/25 by Callsign AD4LE - IP: fl-67-232-190-66.dhcp.embarqhsd.net
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 For Sale: SPE Expert 2K-FA
SPE Expert Model 2K-FA amplifier with internal tuner. S/N 16240096.
Fully tested and verified for proper operation on all three power settings. Comes with original canvas storage bag.
$5,000 shipped any location in USA.
Photos provided upon request.


Listing #1751965 - Submitted on 12/06/25 by Callsign KF6I, Web Site: http://www,islandamplifier.com - IP: 28.sub-97-170-117.myvzw.com
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 RM -ITALY HLA-305V **AS NEW**  
I have for sale a nice HF Amplifier for sale. I'm the original owner. Plans changed no longer own QRP type Radio's. Original price was 859.00 plus tax. I'm selling for 595.00 shipped to your door insured. If serious more pics available. I have all original packing. If purchased, must have verifiable call sign and address. Thanks for looking!250 watts out by the way.

Listing #1744426 - Submitted on 09/27/25 by Callsign KK5NO, Modified on 12/06/25 - IP: 104.151.195.234
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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
$325.00


Listing #1751950 - Submitted on 12/06/25 by Callsign KC9LDP - IP: 209.94.186.244
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 FS Henry 2K4 Amplifier   
FS Henry 2K4 Amplifier. Amp works very well. Cosmetics are nice for age. Selling with no tunes. Pick up East Central OH
$785
Willing to trade up or down for HF gear
Thanks
Kevin


Listing #1751949 - Submitted on 12/06/25 by Callsign K8SU - IP: 38.111.191.244
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 FS: OM Power OM4000A  
Selling my OM4000A as solid state amps better suite my operating style.
The OM4000A is just back from OM Power's U.S. service center, and has had two new tubes matched by OM Power installed. It is in excellent condition with now scratches or other issues. Inside, it is bright and shiny, and is a joy to look at.
To give you a sense of the overhead this amp has, into my Alpha 2000 dummy load, I measured the following with an LP-700 wattmeter:
160m 9.1 in/801 out 13 in/1299 out / 17.1 in / 19.5 out / 25.1 in / 3268 out
10m: 12.5 watts in/2012 watts out.
Included with the amp is the OM4000A remote control unit, which allows you to turn it on/off, put it in standby/online, and also displays the power. Additionally, there is an embroidered cover to keep it dust-free. The original box and packing materials are included also.
$6300 - get it before the tariffs kick in. An OM4001A+ (the successor to the OM4000A) is currently $10,999.99 DXE.
Thanks!


Listing #1738827 - Submitted on 08/07/25 by Callsign NN4X, Modified on 12/06/25 - IP: fl-71-52-107-241.dhcp.embarqhsd.net
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 KXPA100-AT   
KXPA100-AT 100W EXT AMP WITH KXAT100 100W ATU, FACTORY ASSEMBLED 2 YEARS OLD. Worked great with my Icom 705 only used a few times. $1100 shipped in the continental US.


Listing #1749606 - Submitted on 11/15/25 by Callsign KM6DF, Modified on 12/06/25 - IP: c-67-188-170-101.hsd1.ca.comcast.net
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