[GreenKeys] Alltronics Model A Telewriter Converter

[Jack]

Mark,

 

I just “acquired” one via Ebay. It uses 850 shift, so it

might not work well on ITTY without some modification.

I also think it needed an external polar relay and

loop supply.

 

When my unit arrives, I’ll let you know what I find

out about it. I like doing “RTTY forensics”…

 

Jack K0TTY

 

From: GreenKeys [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Mark Hall
Sent: Wednesday, June 24, 2015 10:31 PM
To: greenkeys at mailman.qth.net
Subject: [GreenKeys] Alltronics Model A Telewriter Converter

 

Hello everyone.

I think I have come across a working or semi-working Alltronics Model A Telewriter Converter unit. Like the Gonset Communicator series of radios it has the cool "tuning eye" tube. A pair of pots below it adjust the "eye" opening, for what I can assume to be "mark" and "space". If I'm correct, this is circa mid '50's tech, and receive only, but I'd love to see if it could work with my model 15 KSR.

There is a little information and a schematic on RTTY.com that describes its availability as a kit or in assembled and tested form. Does anyone have any information about this interesting little beast, of any sort? The tubes it uses, aside from the 6AF6 "eye" tube, are common to what I've encountered working on Hammond "tone wheel" organs, and Solovox units. So, most of the discrete stuff is still available through antique radio parts suppliers.

Any help is appreciated. This is a neat little unit, and appears very well-built. I could imagine that "gooney eye" winking, and then receiving W1AW or ITTY on the model 15...

73, y'all...

Mark KE5LIB

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