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HF Amplifiers

Displaying ads 51 to 60 of 213 ads in this category.
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 Heathkit sb220 lots of mods.   
Vacuum relay. Circuit grounded. 24vdc at keying circuit. Was told it has the Peter Dahl transformer and new tubes. 40w in got me legal limit. Im going solid state. 2k FIRM. NO TRADES. Will ship on your dime. I will box it to save you some money. If you want to send pirate shipping label, I will accommodate or ship ups. No returns due to parts swapping. This thing already has the mods you want! Small white stuff on knobs will 100% come off. 25811 WV. If using paypal, buyer is responsible for fee.

Listing #1757482 - Submitted on 01/31/26 by Callsign W8LDX, Modified on 02/03/26 - IP: 50.26.159.129
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 Need help with THP -1.5 KFX not keying
My THP AMP stopped keying with my IC7800. The amp tracks band changes, fan working, no fault LED’s on, cables connected not loose. Could the issue be an internal fuse, bad transistor on relay/PA board. Problem started suddenly.
Does anyone know a ham who works on these THP amps? I live near Philadelphia.
Any advice would bee greatly appreciated. Thanks
Bob
K3SRO


Listing #1757751 - Submitted on 02/03/26 by Callsign K3SRO - IP: pool-108-16-253-90.phlapa.fios.verizon.net
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 FOR SALE Ameritron 811 H w/ manual & cor
I am offering for sale a ameritron 811H
Very low hours, no pets, no smoke. Works as it should. No scratches or dents. Will not ship but will meet you part way. I live in the Houston area. I will send pictures by text to your phone if you want. Asking $800.00 cash or postal money order. You can reach me at 281 630 3938 any time after 12:00 noon. Thanks Gene


Listing #1757717 - Submitted on 02/02/26 by Callsign N5ROE - IP: 47.221.93.212
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 FOR SALE- AMERITRON ARB-704   
MFJ ARB-704 Radio to Amplifier buffer interface. This was being used with my IC-7300 that I no longer have, but can be used with most any Radio. $50.00 CASH OR WALMART MONEY ORDER. SHIPPING POSSIBLE If Buyer pays. Any Questions just ask.

Listing #1757714 - Submitted on 02/02/26 by Callsign W3IDX - IP: c-67-172-16-111.hsd1.pa.comcast.net
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 Mercury Lite WANT TO BUY
Want to buy a Mecury Lite Amp. Someone mayby moving up and have one to part with? Only contact me through this site to discuss what you have.
Thanks Jerry


Listing #1757703 - Submitted on 02/02/26 by Callsign K9JJJ - IP: 208.157.188.31
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 FOR SALE: Sprauge Capacitors  
Have 8 sprauge 200UF 450 volt NOS capacitors never installed $60.00 plus shipping USA only personal check or postal MO

Listing #1756070 - Submitted on 01/17/26 by Callsign N8SST, Modified on 02/02/26 - IP: syn-184-057-230-179.res.spectrum.com
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 Alpha 76A 2-tube $800  
Alpha 76A 2x8874 amp available at Orlando Hamcation.
Cosmetically very clean. Has the low-drive mod. Should be good for 1kw or slightly less. Wired for 220v. Note - input connector is RCA connector rather than a more conventional SO239. This was common to ETO/Alpha amps of this vintage and can be changed, or you can use an adapter. Serial #6742.
$800
Pickup available at Orlando Hamcation. Will be at the FCG flea market tables. Contact me for details or with questions.


Listing #1757696 - Submitted on 02/02/26 by Callsign W4WF - IP: 108.240.195.85
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 Icom IC-PW1 Amplifier  
This is from my father's estate. This is is main station amplifier and was in use when I disconnected everything. Asking $1750 plus shipping and boxing. I will drop off at Fedex or UPS, have them box, insure, and ship at buyers expense. Willing to travel a reasonable distance from south west Michigan to meet up. SN #1200. I have not tested this myself, I have been out of the hobby for 25+ years, but this has been in service up to me disconnecting the station. Smoke Free Home. Please email if interested.

Listing #1757670 - Submitted on 02/02/26 by Callsign N8UGD - IP: 45-26-131-187.lightspeed.gdrpmi.sbcglobal.net
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 PW-1 WANTED (PARTS UNIT)
PW-1 Needed for parts, Any Shape, just let me know what you have? I'll USE PayPal for payment & shipping

Listing #1757664 - Submitted on 02/02/26 by Callsign WA4SRE - IP: 152.sub-174-193-114.myvzw.com
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 Yaesu FL-2100B Amplifier   
Yaesu FL-2100B 110v running 2-572B's Very little use on the tubes.Everything works good. 600 to 800 watts. $300 LOCAL PICKUP ONLY Central Texas

Listing #1757552 - Submitted on 02/01/26 by Callsign KZ5E - IP: 99.70.201.71
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