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Mystery AM Transmit...
 
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Mystery AM Transmitter

 
Broadcast Equipment
Last Post by RichPowers 2 hours ago
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RichPowers
 RichPowers
(@richpowers)
Posts: 3380
Illustrious Member Registered
Topic starter
 

Anyone recognize this one? Maybe someone might want to snag it up and find out. I'm guessing it's a homebuilt unit of some kind. I lightened these images a little (front and back) because it's kind of dark on ebay:

-- Hmmm, the images are only 52kb but they won't post, getting an "unknown error" (where's an administrator when you need one?)

Anyway doesn't look familiar, you can see it in the listing, but it'd be nice to archive those images here.

Medium Wave AM Transmitter
https://www.ebay.com/itm/227373237657 ?

It's listed $115.00 and $9.99 shipping. Used "Like New", "Unbranded".. "cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used .. " Here is the Description:

Medium Wave AM Transmitter

VFO controlled
Freq Range: 650-1725 KHz
Ant: BNC Out
.5W Carrier/1.5W Peak
Audio In
Audio Level Knob
Freq Knob
Audio Cable 3 ft
BNC to Wire Adapter
40 ft antenna wire

IRFP250 mosfet as RF power amplifier.
2N7000 transistor as RF driver.
BD241C AF power transistor as modulator stage.
BD139 transistor as high gain audio amplifier stage.
MPF102 transistor as oscillator.

Not sure if this will work, here's the images direct from eBay:

[Img src: ]


This topic was modified 2 hours ago by RichPowers
 
Posted : 25/06/2026 8:07 pm
RichPowers
 RichPowers
(@richpowers)
Posts: 3380
Illustrious Member Registered
Topic starter
 

Above is the front of the unit and here's the back, these images are linked direct so will of course will disappear here eventually after the auction ends, but at least you can see what it looks like without having to go browsing around the net. It zooms in nicely on a click

[Img src: ]


This post was modified 2 hours ago by RichPowers
 
Posted : 25/06/2026 8:16 pm
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