[Milsurplus] [MMRCG] Mystery Transmitter

[Ray Fantini]

Pure speculation on my part but looking at it would speculate that was a HF AM Marine base station from back in the days before all marine traffic migrated to VHF FM. Cannot tell from the second photo if there is a receiver under the 813 deck so maybe it is a transmitter only? Perhaps it was used in the great lakes or for river traffic? Think the telephone dial is for remote channel change or remote monitoring. Junked a Gates BC-5 AM Broadcast transmitter some years ago that was installed in 1948 and it used a telephone dial along with a telephone stepper relay for the remote control function, it was remoted over two dry pair telephone lines with one controlling the stepper relay and the second providing the meter output to the remote end. In order to read different things on the transmitter like plate current and voltage you dialed a digit from one to nine and the stepper connected the proper circuit to the remote meter. There was a second dial on the remote at the transmitter end that you used for calibrating the remote control.
It was odd to see a transmitter set up for remote operation back at that time being most of the old time AM broadcast stations had the transmitter located right at the studio being until the late seventies you had to do meter readings every three hours and have a licensed engineer on duty the entire time you were on the air. Or at least someone with a first commercial, now you can have transmitters remoted with no monitoring and use remotes that if anything goes wrong calls you.

Ray F/KA3EKH






From: MMRCG at groups.io <MMRCG at groups.io> On Behalf Of Brown Beezer via Groups.Io
Sent: Wednesday, January 15, 2020 11:56 AM
To: MMRCG at groups.io; boatanchors at mailman.qth.net; milsurplus at mailman.qth.net
Subject: Re: [MMRCG] Mystery Transmitter

And it lived in a damp basement......


-----Original Message-----
From: W2HX <w2hx at w2hx.com<mailto:w2hx at w2hx.com>>
To: MMRCG at groups.io<mailto:MMRCG at groups.io> <MMRCG at groups.io<mailto:MMRCG at groups.io>>; Boatanchors at mailman <boatanchors at mailman.qth.net<mailto:boatanchors at mailman.qth.net>>; milsurplus at mailman <milsurplus at mailman.qth.net<mailto:milsurplus at mailman.qth.net>>
Sent: Wed, Jan 15, 2020 08:05 AM
Subject: Re: [MMRCG] Mystery Transmitter

I don't know what it is, but it is attractive!

-----Original Message-----
From: MMRCG at groups.io<mailto:MMRCG at groups.io> <MMRCG at groups.io<mailto:MMRCG at groups.io>> On Behalf Of David Stinson
Sent: Wednesday, January 15, 2020 7:52 AM
To: Boatanchors at mailman<mailto:Boatanchors at mailman> <boatanchors at mailman.qth.net<mailto:boatanchors at mailman.qth.net>>; milsurplus at mailman<mailto:milsurplus at mailman> <milsurplus at mailman.qth.net<mailto:milsurplus at mailman.qth.net>>
Subject: [MMRCG] Mystery Transmitter

Does anyone recognize this transmitter?
Thanks.

https://photos.app.goo.gl/fUhMd9qtiCjAqG9g6
https://photos.app.goo.gl/cz1xjTMnRQ3Pnrt26






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