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SPE Expert Fully Automatic Amplifiers In Stock at MTC Main Trading Company
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Displaying ads 1 to 10 of 147 ads matching your search for: 08/01/2025
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KA9FOX Wishlist on Amazon.com

 MISC - FS Am-Com ASAC-706  
This is a great interface and controller for the mobile screwdriver antennas and the IC-706 series of radios. It has a control unit that allows you to manually control the antenna coil up and down. It also allows automatic tuning of the antenna by pressing the tune button on the radio. It controls both radio and antenna and automatically tunes the antenna for best SWR. Extremely handy and useful for mobile operation. $150 plus shipping

Listing #1738154 - Submitted on 08/01/25 by Callsign N5FF, Modified on 08/01/25 - IP: 47-186-118-239.dlls.tx.frontiernet.net
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 RADIOHF - LF: Rockmite and similar rigs
I have a small collection of these small rigs and I'm always happy to grow it. If you have qrp rigs in the vein of the rockmite let me know. Untested, not working is ok.

Listing #1738173 - Submitted on 08/01/25 by Callsign KD2WQI - IP: 108.145.161.24
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 RADIOHF - Drake TR-4CW-RIT
Just back from RON Baker WB4HFN in May. Can send you the notes. All works great. He installed a cooling fan on the back and a speaker Jack on the back Also. I have decided to sell this perfectly working unit. $800.00 I will pay shipping and insurance to the lower 48. Please check my feedback on here. I can take Paypal-FF only, Cashap, Venmo, Check or MO. No returns and no guarantees. I will be at the Florence SC Ham Fest on August 9th. Thanks for looking.

Listing #1738172 - Submitted on 08/01/25 by Callsign KA9NOK - IP: 152.44.65.58
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 ANTHF - FOR SALE: DXE-RF-PRO-1B  
Active Magnetic Loop Antenna in immaculate condition. Everything as delivered new plus 75' RG6 cable assembly. $600 delivered within USA! PayPal accepted.

Listing #1737455 - Submitted on 07/26/25 by Callsign KQ4KX, Modified on 08/01/25 - IP: syn-072-187-048-223.res.spectrum.com
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 RADIOHF - Drake T-4XC Transmitter
Drake T-4XC Transmitter complete but has not been turned onin perhaps about 4 or 5 years. $100.00 you pay shipping, I use Pirate sship to save money on shipping. I take most types of payment. Check my feedback. I will be at the Florence SC Ham Fest on August 9th. Thanks for looking.

Listing #1738171 - Submitted on 08/01/25 by Callsign KA9NOK - IP: 152.44.65.58
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 RADIOHF - Icom 7300/ hf auto tuner/ 1306 amp  
Nice icom 7300
Couple years old, comes with mic ,power cord , manual , may still have the box have to look around. Used very little. I also have an hf auto tuner and a ameritron 1306 amplifier $4000 for all shipped do not have all the boxes,
The tuner has small dent everything works well, the amp will do legal limit if you want to push it. Not advisable!
Am looking for an Italian amp at least 300 watts and a good lap top with newer strong battery, and at least 8 gb.of ram for ft8.
Will consider some horse trading,plus or minus $$s,
will consider other amps but weight is a factor …going to be shipped to Cuba.


Listing #1738102 - Submitted on 08/01/25 by Callsign N2YY, Modified on 08/01/25 - IP: ool-4572095b.dyn.optonline.net
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 AMPHF - FOR SALE: Vintage Marconi 5552A amp.   
VINTAGE Marconi 5552A Final Amplifier Unit deck
- Asking $450.00 (does NOT include shipping)
- This a non-working amplifier
- A two-tube amp (no tubes are included)
- Massive tuning coil
- Massive chain-driven anode tuning switch
- Massive capacitor
- A perfect start for a homebrew QRO amplifier.
- Please contact me for more pictures.
- Prefer local pick up near Florida panhandle.
- Thanks for your interest. John K3GL


Listing #1738169 - Submitted on 08/01/25 by Callsign K3GL - IP: c-98-192-145-154.hsd1.fl.comcast.net
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 AMPHF - Heathkit SB 220  
Heathkit SB-220 liner amplifier in excellent condition. Matched Eimac 3-500z full output tubes, properly grounded grid configuration, soft key module for late model radio protection, MOV's installed for line surge protection, upgraded filter capacitors and diodes, upgraded metering circuit, glitch protection resistor, upgraded parasitic suppressors, upgraded T/R relay for fast and quiet switching, soft start, new fan motor, LED meter lamps (incandescent bulbs provided as well). The case and face are nearly perfect. No added holes or unnecessary switches. Needs nothing. Produces well over rated output. No shipping. Can arrange to meet a reasonable distance away. If you want it shipped, I'll deliver to a reputable shipper/packer and you can make arrangements. More pictures available. Email with a phone number and we can discuss. $1000

Listing #1737786 - Submitted on 07/28/25 by Callsign KY7X, Modified on 08/01/25 - IP: 50-37-27-31.grdv.nv.frontiernet.net
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 AMPHF - FOR SALE: SPE Expert 2K-FA   
I have an SPE Expert 2K-FA solid state amplifier for sale. This is a very beautiful amplifier, 100% mint condition, not a single scratch anywhere. The amplifier puts out full legal limit plus plus. I have never had a single issue with this amplifier. Always using Dan Tassel's cables for rig control, ALC control, and SteppIR interrupt to ensure 100% failure free operation. Complete with box, manual, carry bag, and extra air filters. Once setup correctly, this amplifier is a set it and forget it, no interaction is needed.
This is a wonderful deal at $5500 +$150 shipping & insurance. That's $2000 below the price of a new one.
Reason for selling i don't need two high end SPE Expert 2K-FA Amplifiers.
Shipping is from Sarasota, Florida or stop by an pickup your dream amplifier. Check out my positive feedback on QRZ.COM, and here on QTH.com
More pictures available by request.
Shipping only in USA


Listing #1738047 - Submitted on 07/31/25 by Callsign K4PRO, Modified on 08/01/25 - IP: 47-205-103-166.fdr01.ssds.fl.ip.frontiernet.net
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 AMPHF - 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 #1736597 - Submitted on 07/18/25 by Callsign K6HM, Modified on 08/01/25 - IP: 75-37-192-218.lightspeed.lsatca.sbcglobal.net
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