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

Displaying ads 161 to 170 of 255 ads in this category.
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  YASEU 2500 legal limit with 10 meters
Legal limit 80 through 10 meters. Perfect on all bands and I put my upgrade signature on it. I even peeled off the original front panel plastic. This is a rare amp and delivers a near KW on all bands including 10 meters.
I performed all tests and invite any and all to come pick it up in Placerville Ca.
I am asking 950.00 pick up and see it on the air all bands, or if I have to ship it we will send it FED X only and buyer to pay FED X pack and ship costs, so hopefully there is a buyer that can come to the qth and enjoy the showroom quality of this very rare yaseu amp.
it belongs is a museum.
Rich ka6nbc 916 765 5811


Listing #1744119 - Submitted on 09/24/25 by Callsign KA6NBC - IP: 12.74.99.0
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 p/s
need used ameritron ps600 power supply . not solid state i have an older one .was dropped.

Listing #1744029 - Submitted on 09/24/25 by Callsign KJ4RB - IP: syn-071-077-243-158.res.spectrum.com
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 Ameritron AL-572 Southern Californa  
** Still looking for local buyer **
I have an Ameritron AL-572 amplifier (serial number 11473) for sale. This amplifier has been my backup for the past 10 years or so; it has been used very infrequently. I tested it briefly and it was putting out 1000 watts on 20 meter CW with about 70 watts of drive. It is in good physical condition. It is working but due to its age I am selling it “as is”. It is currently wired for 220v AC but can be rewired to 120V as an option.
I don't want to ship the amplifier and am offering it for local sale for $1000. If I cannot find a local buyer I will be forced to consider shipping the amp. I have the original box.
(No the K3 and wattmeter in the picture are not included :-) )


Listing #1743260 - Submitted on 09/15/25 by Callsign K6NR, Modified on 09/22/25 - IP: ip68-4-255-171.oc.oc.cox.net
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 Acom 1000 HF/6m amplifier—$2000  
Mint Acom 1000 hf/6m amplifier with original box..Local pickup Only—-will not ship….still hooked up and you can operate it before you buy it if you wish. Can deliver if your close.. $2000…

Listing #1743879 - Submitted on 09/22/25 by Callsign N1RES - IP: pool-173-48-32-11.bstnma.fios.verizon.net
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 Heathkit SB-220  
Very nice SB-220. loaded with the following Harbach kits cleanly installed. I think every kit they sold acually.
SK-220 soft Key interface. protects your modern transmitters TX relay
BKR-220 New manufactured direct replacement circuit breakers
FB-220 New heavy duty filter bank, these are the nice big mallory units
SS-221 Soft start relay, dampens the load on filter caps and filaments
FM-220 Hi output fan and motor kit.
RM-220 Rectifier and metering board. Far superior than original board layout and part list.
Also the measures parasitic suppressor kit is installed.
Eimac tubes putting out close to legal limit output and all bands have good input SWR on the tuned input. This amp has been VERY well cared for and all kits are VERY cleanly installed. Faceplate is blemish free and case paint is in very good condition as well.
A solid amp that's been updated, will make its new owner a very dependable piece of gear.
$1300 pickup in Western KY preferred
Text also preffered


Listing #1743717 - Submitted on 09/20/25 by Callsign KI4THX - IP: syn-065-186-012-237.res.spectrum.com
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 For Sale great Amp Alpha 87A
Alpha 87A for sale....shipped to you in the USA $2650. Three boxes packed to factory standards. This is truly a no tune automatic band switching AMP, not like another advertised on this site. You will be happy with this AMP it has Alpha Max for computer control which is great. Packed and ready to go used yesterday 9-18-25 with full power and a little more....HI HI.

Listing #1743622 - Submitted on 09/19/25 by Callsign W4GKM - IP: syn-137-027-039-022.biz.spectrum.com
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 Very nice Alpha 87A   
Very nice Alpha 87A linear amplifier, exceptionally clean and delivers full power++ as shown in the picture. Wired for 240V operation. Includes the original operational manual.
• 1.5 kW continuous RF output
• Covers 1.8 – 29.7 MHz (all common amateur bands)
• Auto-tune with microprocessor-controlled band changes
• Full CW break-in and digital mode capable when paired with a compatible transceiver
• Reliable, high-performance, clean signal output
$3,300
Local pickup only or will meet within distance. Will not ship due to weight.


Listing #1743590 - Submitted on 09/19/25 by Callsign K6AEM - IP: 157-131-206-248.fiber.dynamic.sonic.net
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 Vintage Heathkit SB-220   
For sale is a classic Heathkit SB-220 linear amplifier, a vintage HF amplifier covering 80–10 meters. Delivers 1.2–1.5 kW output for SSB and CW with only 100 W drive. This workhorse amplifier is fully operational and ideal for ham radio enthusiasts or collectors who appreciate robust build quality and vintage ham radio gear.
• Power: 120/240 V AC, draws 20A at 120V / 10A at 240V
• Size: 209 × 378 × 398 mm | Weight: 21.7 kg
• Condition: Shows signs of age on the front panel and housing—adds to its vintage appearance
• Performance: Reliable, proven amplifier, still putting out strong signals
? Pickup preferred—local meet within ZIP 94546 recommended due to weight.
Asking $1,100 or best reasonable offer (OBO)


Listing #1743588 - Submitted on 09/19/25 by Callsign K6AEM - IP: 157-131-206-248.fiber.dynamic.sonic.net
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 Drake L4-B  
Listed is my Drake L4-B Amp (80-10). I purchased in 07-2012 as a project. There are 14 details pics upon request. The power supply has the upgrade board, new caps. If you ever heard me on the KEN (KY Emergency Net) or HWN Hurricane Watch Net, then you’ve heard this amp. I no longer get on the air in that capacity & my new QTH is not wired for 240v & I am not interested in upgrading the wiring in the house or the amp. It is currently wired for 240v. This amp works great, has the owner’s manual (reprinted plus digital copy). Also listed will be a set of NOS 3-500Z tubes. Currently selling together but if buyer only wants the amp, then will sell the tubes separate after the amp sale. Local pickup only, cash only. Am will to drive to meet about 50miles due to my limitations. Unit is sold as. Asking $1500 with the spare tubes, $1250 without the spares. Any questions holler. Thank you for looking. W8QAS

Listing #1743561 - Submitted on 09/18/25 by Callsign W8QAS - IP: 38.62.139.51
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 FOR SALE: Collins 30S-1  

Price: $800 Firm. Local Pickup Only.
Refurbished with Super Long Life Caps.
Full power out. Works great.
Front panel is in nice shape.
Some minor scratches on cabinet.

Extra Tubes:
I have five extra 4CX1000A medical pulls with low hours.
You can have as many as you want for $100/each.

Sold AS-IS as vintage electronics.
Guaranteed to be working upon delivery.
LOCAL PICKUP ONLY. SW side of Milwaukee.
Sincerely,
W9XZ


Listing #1743507 - Submitted on 09/18/25 by Callsign W9XZ - IP: syn-173-089-040-121.res.spectrum.com
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