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SPE Expert Fully Automatic Amplifiers In Stock at MTC Main Trading Company
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HF Amplifiers

Displaying ads 61 to 70 of 230 ads in this category.
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 WANTED: Display for Mercury III 3
I am looking for the display for a Mercury III 3 amplifier.

Listing #1762734 - Submitted on 03/21/26 by Callsign W6MTM - IP: 47-154-8-209.fdr01.wmns.ca.ip.frontiernet.net
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 FS Henry 2K4A Amplifer
In nice shape works great. This is a pickup item. $895 Have pics
Thanks
Kevin


Listing #1762692 - Submitted on 03/21/26 by Callsign K8SU - IP: 38.111.191.244
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 WANTED ALPHA 77 Dx AMPS
want Alpha 77Dx amps s/n 3700 and higher preferred....Tired of Russian and Chinese tubes!! ALSO need PETER DAHL transformers P/N A77S1 to replace standard x-former. 73 Bud K4ISV, VP5B

Listing #1762686 - Submitted on 03/21/26 by Callsign K4ISV - IP: 160-79-27-16.pool.dsl.nctc.com
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 Ameritron ALS-1300/1306 pwrsupply 50 vol  
Ameritron ALS-1300/1306 pwrsupply, 50 Volt 50 Amp switching power supply. The Ameritron ALS-1300/ALS-1306 power supply is a voltage regulated current limited supply. It contains 14-volt positive and negative supplies as well as dual 50-volt 25-ampere continuous (30-ampere peak) fully current limited supplies. Each PA (power amplifier) module in the ALS-1300/1306 operates from the separate 50-volt sources, giving a total dc input power rating of 2500 watts to the power amplifier modules.
Power supply to amplifier connections are through a heavy-duty cable using a large Cinch Jones connector.
Power Line Requirements: This amplifier ships wired for 200-260 Vac. The maximum average power line current is 12 amperes at 240 volts. Two 250-volt 15-ampere fuses the power line. Other pictures available if needed. Instruction manual on line. Visual inspection looked good, but untested/"as-is" 600 shipped stateside. Payment by USPS Money Order, PAYPAL or good personal check.


Listing #1762676 - Submitted on 03/21/26 by Callsign WA1APX - IP: 64.sub-97-135-117.myvzw.com
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 REDUCED PRICE - Drake L4B and L4  
REDUCED PRICE - $1,000
For Sale - Drake L4B Amplifier and L4 Power Supply $1,000
Both in excellent condition and working perfectly.
1,200 watts output with 100 watts drive.
L4B - Good 3-500ZG tubes, blue LED meter lights, all original-no modifications, send control 12 volts at 10 ma via RCA jack.
L4 - Harbach soft start modification and documentation, new capacitors and boards, quiet cooling fans mounted on cover.
Original Users Manual
Prefer local pick-up near Allentown PA or will drive 100 miles to meet
for delivery. Shipping at buyers expense. Sold as is due to age of electronics, no return available.


Listing #1762631 - Submitted on 03/20/26 by Callsign W3RJ - IP: 24.115.195.165.res-cmts.bgr.ptd.net
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 FS Icom PW-2 amplifer
Beautiful condition. $4750 plus shipping or willing to trade up or down.
Looking for Icom IC 7850 LE or Icom 7851
Thanks
Kevin


Listing #1762628 - Submitted on 03/20/26 by Callsign K8SU - IP: 38.111.191.244
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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 #1762593 - Submitted on 03/20/26 by Callsign K6HM - IP: 75-37-192-218.lightspeed.lsatca.sbcglobal.net
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 Updated Heathkit Warrior FREE
Plug and play Warrior. T/R relay, cut off bias, and solid state rectifier mod done. Works perfect. Has been used with four 572Bs but you can also use four 811As but you’ll have to significantly cut back on your drive power. 800 watts out on 80-40-20 with slightly less on 15 and 10. Tunes up nicely on 17 and 12. Cabinet redone. All work was done by previous owner. I have all the documentation with schematics somewhere. Around 105 pounds so pick up is a must. Hate to see her go but the shack is small. Lane ku7i Las Cruces, NM 50 miles west of El Paso. I am good on QRZ. Text msg is much preferred over email. BTW this amp only runs on 120 vac, there is no 240 vac option on this amp. When you get here I will demo the amp with the four 572Bs in place and then I will remove the tubes to keep for myself so you will need to supply your own 572Bs or 811As but you get to take home a working amp that has been upgraded for free. 100% plug and play ready to use.

Listing #1762532 - Submitted on 03/20/26 by Callsign KU7I - IP: c-174-62-41-254.hsd1.nm.comcast.net
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 FL2000B  
A working 1KW amp. $650 Buyer arranges local pickup or shipping.

Listing #1757391 - Submitted on 01/30/26 by Callsign K5DKZ, Modified on 03/19/26 - IP: syn-076-183-146-186.res.spectrum.com
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 Alpha 87A Autotune 1500 Watt Amplifier  
Alpha 87A, S/N 8702371418 with manual is capable of 1.5kW continuous RF output on all commonly used modes and ham bands from 1.8 to 29.7 MHz. Band change and tune-up are manual or automatic microprocessor controlled. Can interface with computer.
Capable of full power and full CW break-in (QSK) and all analog and digital modes. Very low usage and in excellent condition. A spare matched pair of Eimac #CPX800A& tubes available, sold separately. Prefer local pickup in NE CT. If shipped, buyer pays actual costs to CONUS. PRICE $2999.


Listing #1762436 - Submitted on 03/18/26 by Callsign K1YN - IP: syn-096-032-053-240.res.spectrum.com
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