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HF Amplifiers

Displaying ads 11 to 20 of 246 ads in this category.
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 FS: Ameritron AL-80B Amplifier
Extremely clean and plug/play operational. Serial number is approximately 19300. Demonstrated at pick-up (14560), into a dummy load. Our local pack/ship firm has experience with large/heavy radios and I can provide references should you desire to contract with them to ship this amplifier. $1400. Please email with any questions you may have. Thank you.
Listing #1538111 - Submitted on 05/08/21 by Callsign NW2K - IP: 50-48-141-233.roch.ny.frontiernet.net
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 Ten Tech Centurian 422 Amplifier  
Ten Tech Model 422 Centurian Legal Limit Amplifier,All Functions Work,#-500Z Tubes.Local Pick Up Only. Complete Manual.Payment at pickup. Thanks,Bob W5RLW Edmond,OK $900.00.
Listing #1538099 - Submitted on 05/08/21 by Callsign W5RLW - IP: 99-126-184-101.lightspeed.okcbok.sbcglobal.net
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 AMERITRON AL-80B  
AMERITRON AL-80B...Best amp I ever owned...just not on the air these days..comes with original boxes and manual...this is a pick-up only here on Long Island as shipping an amp in my estimation is an invite to disaster.
Best part is if u pick it up u will be able to see it in action before buying...I'm sure u will QRZ my QTH so u can see where I am on L.I. Drop me an email from my email address on QRZ, and I will give you my fone # so we can chat...$1300.00 currently wires for 120V, but easily changed
Listing #1538093 - Submitted on 05/08/21 by Callsign K2LGO - IP: ool-1892ab0f.dyn.optonline.net
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 WTB 3-500z parts
Looking to buy the following parts pertaining to 3-500z tubes
Air variable Tune and load caps such as ones from a heathkit SB-220
Tube sockets
Chimneys
Anode caps
Eimac HR-6 caps
Filament transformers
HV transformers.
Thanks 73ís
Listing #1538063 - Submitted on 05/08/21 by Callsign W4EKY - IP: 173-80-229-121.krmtcmta01.res.dyn.suddenlink.net
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  Digital Displays for Elecraft's Amps:   
Elecraft's KXPA100 amplifier:
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Don't wait for a fault light to come on. Keep an eye on 5 crucial readings at all times.
1. Power amplifier's heat sink temperature
2. Power amplifier's high voltage supply voltage
3. Power amplifier's current
4. Power amplifier's output power
5. SWR that the KXPA100 sees at its output
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Elecraft's KPA500 amplifier:
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Instead of seeing only 1 crucial reading, monitor 7 at all times.
1. Power amplifier's heat sink temperature
2. Power amplifier's high voltage supply voltage
3. Power amplifier's current
4. Power amplifier's output power
5. SWR that the KPA500 sees at its output
6. Operate or Standby mode
7. Band amp is tuned to
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Elecraft's KPA1500 amplifier:
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Displays the same display that is on the KPA1500 Amplifier
Change the display on the KPA1500 and the DDU changes
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Display Unit can be located at a more visible location
Up to the RS232 limit from unit
Easy to read 2 line display
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KAT500 DISPLAY ALSO
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$139 plus $10 shipping.
Email for more info.
Listing #1538055 - Submitted on 05/08/21 by Callsign KV5J, Web Site: http://www.kv5j.com/store - IP: 193-dsl236.ne-tel.net
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 Excellent NOS Eimac 5CX-1500A Tube  
Eimac 5CX-1500A NOS tube sent to CPI for certification of tube output, tube meets new tube specs, certification sheet shipped with tube. Tube is used in Henry Amps 4K & 4KA amplifier.
REDUCED asking price is $400 plus shipping. Payment requested by bank/postal money order or check (sorry no PayPal).
Thanks for looking! Richie N2AUG
Listing #1538046 - Submitted on 05/08/21 by Callsign N2AUG - IP: ool-45769c5b.dyn.optonline.net
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 FOR SALE Ameritron AL-811H AMP  
Ameritron AL-811H AMP, wiring for 120VAC., second owner, works well never overdrive, smoke-free home, no original box - If I have to ship it will be packed well protected - $875. Ship FedEx Ground. PayPal or USPS Money Order.
Listing #1538037 - Submitted on 05/07/21 by Callsign WB2CM - IP: ip70-174-8-106.hr.hr.cox.net
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 FS: NATIONAL R-175A KW PLATE CHOKE  
For Sale:
National R-175A KW Plate choke for QRO Amplifier.
Rated for 800 ma; 145 uH.
Rewound to factory specs. Comes with its History and design info.
These were specified in many Home Brew amplifiers and have
an excellent reputation.
I have used them in KW EIMAC 4-400 and 4-1000 rigs.
$45.00 shipped in the CONUS.
Email me for overseas shipping.
USPS MO, check or PayPal. I am gd in QRZ.
See my other ads for Drake, EICO, AM and HEATHKIT gear.
Listing #1533165 - Submitted on 03/31/21 by Callsign WA1BRI, Modified on 05/07/21 - IP: 47.199.180.120
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 Wanted: Elecraft KPA-500 Amplifier
Looking for an excellent condition Elecraft KPA-500 amplifier.
Listing #1538025 - Submitted on 05/07/21 by Callsign W3DDF - IP: c-69-140-58-202.hsd1.md.comcast.net
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 Amp Supply LK-500ZA  
LK500ZA 160-15 by Amp Supply. The amp has tuned input for solid state radios, 2 3-500 Eimac tubes, original manual, currently wired for 220v but can be wired for 110. The amp comfortably puts out 800 watts cw key down with 45-60 watts drive. I have not pushed it any further. (According to the manual, "TYPICAL OUTPUT: 1500 Watts on SSB, 900 Watts CW) When I got this amp 2 months ago it only worked on 160 meters. In checking it out, I discovered a burned out wafer in the band switch so I replaced that wafer with a new one and the amp came back to life with one exception...80 meters. I believe there is a problem with the tuned input circuit for 80 (my rig shows high swr to the amp on 80) and I'm ready to pass this on to the next set of hands to fix that. The only other issue is that the meter incorrectly reads the plate voltage at 1000 volts. In reality it's running between 2700-3000 volts as it should. The meters are accurate for plate and grid current. Pick-up or meet 100mi or so. $600
Listing #1538004 - Submitted on 05/07/21 by Callsign N8KR - IP: pool-184-19-25-215.ftwy.in.frontiernet.net
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Elecraft KX3 Heatsink / 14 volt 4 Amp Clean DC Power Supply
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