[GreenKeys] Does anyone know what this is?

[Larry Tighe]

That is a PreProgress GE lowband receiver.  It had a seperate transmitter 
that could have one or two 807 finals.  Two 807's would give you over 100 
watts output from your car!!

It is low band, i.e., 30 to 50 MHz.  By jumpering two pins and applying the 
correct voltage, you can get it to work.  Too, another pin thru a pot to 
ground will tame the squelch circuit.  Thence on to the two pins from the 
output xfmr will give you audio.

Lar
K2JIA
www.antiquetelephone.com

----- Original Message ----- 
From: "Derek Cohn/WB0TUA" <vibroplex at mindspring.com>
To: "Greenkeys ((E-mail))" <greenkeys at mailman.qth.net>
Sent: Friday, March 21, 2008 9:48 PM
Subject: [GreenKeys] Does anyone know what this is?


> Hi Everyone,
>
> Does anybody know that the following item is?  Since it's in with a bunch 
> of teletype equipment and marked Bell System, I'm wondering if it's 
> something to do with teletype.
>
> http://webpages.charter.net/mecograph/P1010001.JPG
>
> Thanks for any info you guys can offer!
>
>
> Derek Cohn
> Morse Telegraph Club - Alton Chapter
> Office UD, Sine DJ
> Amateur Radio Station - WBØTUA
> 1969 Brunswick M274A5 Mechanical Mule
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