[GreenKeys] does anytone have one of thes extra fax machines!?

[Peter Gottlieb]

Sounds like Western Union Telefax units.  They used "Teledeltos" paper, a 
chopper wheel to make an about 2600 Hz modulation tone, and had lots of relays 
to work with direct connect to their CO "concentrator" using DC signalling.  
They sent negative images and wouldn't work on long distance over the telephone 
since their modulation tone was too close to the disconnect tone (research "blue 
boxes" and "tandems").

Peter



On 2/18/2013 12:33 AM, Jeffrey D Angus wrote:
> On 2/17/2013 10:12 PM, COURYHOUSE at aol.com wrote:
>> *Desk-Size Facsimile Machine*
> *I bought several of those to play with from J J Glass Surplus in
> down town Los Angeles in the early '70s. One of the great bits
> of entertainment between several of my friends were swapping
> Don Martin cartoons from Mad Magazine via 2 meter AM radio.
>
> The receiver was basically an audio ouptut tube with the plate
> coupled via a capacitor to a stylus that rode against the paper.
> Depending on the level of the audio would more or less burn
> the paper and leave a scanned image behind.
>
> Jeff-1.0
> wa6fwi
>
> *
>
>
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