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

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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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 For Sale: Acom 1500  
Selling a beautiful as nice as you will find ACOM 1500+ amplifier.
This amp was purchased as my spare but I never needed it. Only about 5 hours of use on it just to be sure it worked and it went back in the box. It has NO marks, scratches of any kind. I have the original manual from purchase from DXE and original manual.
The specs can be located at:
https://www.dxengineering.com/parts/aom-1500-240
$3700 Shipped
I prefer Zelle or check. We can discuss other option.
Steve, NA5C
956-207-5353
SRMuenich at gmail.com


Listing #1762606 - Submitted on 03/20/26 by Callsign NA5C - IP: 104-191-182-133.lightspeed.snantx.sbcglobal.net
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 **KPA500 RF Power Monitor/WiFi remote**  
**KPA500 RF Power Monitor**

*Real-time monitoring for Elecraft KPA500 owners*

Six critical parameters — Power, Voltage, Current, SWR, Temperature, and Band — displayed simultaneously on a high-contrast 256×64 OLED. No menu cycling. No squinting. 10 updates per second.
Built-in WiFi streams live data to any smartphone, tablet, or browser — no app required. One-time 5-minute setup. Access locally via *kpa500.local* or remotely via Tailscale from anywhere in the world.

✦ 500ms intelligent peak hold on power output
✦ WebSocket web interface with retro terminal aesthetic
✦ Remote Power ON/OFF and Operate/Standby control
✦ Over-the-air firmware updates
✦ OLED works independently of WiFi — always
Plug-and-play RS-232 connection. No amplifier modifications. Assembled and tested. Cables included.

**4″ × 2″ × 4″ · 9–14.8V DC · 100mA**

*Built by hams, for hams.*

---$199 plus $10 shipping



Listing #1761436 - Submitted on 03/09/26 by Callsign KV5J, Modified on 03/20/26, Web Site: http://www.kv5j.com - IP: customer.mmmiflx1.isp.starlink.com
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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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 Ameritron AL-1500 Amp - Sold Pending $  
Ameritron AL-1500 amplifier clean in good working condition. Peter Dahl transformer. Legal Limit+ with Eimac 8877 Tube. Couple of dings and one mark on top case. Pickup South Florida or I can bring to Stuart Hamfest 3/21. This is a workhorse. $2,100

Listing #1761679 - Submitted on 03/11/26 by Callsign W1MBB, Modified on 03/20/26 - IP: 23.124.38.7
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 For Sale JK Phantom 40/20 yagi  
For Sale “. JK PHANTOM “. 4 full size elements (74 feet each ) for 40 meters . 5 Full size elements on 20 meters. With boom truss and balum 425 lbs on a 48 Ft double trussed 3 inch boom. Close to 40 Square Foot of wind load. Good for 130 mph.
New price is $8400 plus freight of $600-800
A $9000 plus antenna. Need a good tower to use this yagi.
I’ve got 3 of these. Will consider sale of one. Still assembled pre owned.
Will sacrifice for $4200.00. !!
Serious inquiries only will need to be disassembled. If you’re not familiar with a big commercial type yagis you need to study up on this yagi.
Call me if interested. I’m listed in details in this ad. Cash or personal check. Scammer please don’t call with same old message!!!
73
Loyd
WB4BMQ
“Sweet Home Alabama “


Listing #1762555 - Submitted on 03/20/26 by Callsign WB4BMQ - IP: syn-066-168-162-096.res.spectrum.com
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 QRO-2500   
For sale is a QRO-2500, full output tubes. Legal limit++ Brand new electrolytic capacitors, rectifiers and metering resistors. Peter Dahl transformers. Heavy duty multi-teach industries 86 series band switch and PTFE wiring throughout. These are built like a tank. $2200. Can demonstrate over the air, FaceTime or in person. Please reply through qth, phone or text only.
I can add cash for the right trade. Looking for an Alpha 8410 or similar.
I can deliver to the Sevierville, TN ham fest on 3-21-26 to a serious buyer
Thanks and 73's


Listing #1762540 - Submitted on 03/20/26 by Callsign W4EKY - IP: 136.226.3.85
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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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 FS: TEN-TEC Centurion 422B Amplifier  
TEN-TEC Centurion 422B Amplifier, Pair 3-500z, Excellant collector condition, $1900 Cash Local pickup Cleveland TN or Sevier County Hamfest. I will not ship.

Listing #1762524 - Submitted on 03/19/26 by Callsign KB8SGO, Modified on 03/20/26, Web Site: http://kb8sgo.com/ - IP: host-192-199-186-165.twlakes.net
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