Telexforum.de

One of the items required for Telex operation, that normally is not needed for RTTY is known as a signalling unit (in the UK) or an FSG in Germany.

These are very rare in the UK, I have only ever seen a handful of them, and all but 1 are in a museum.

So, for the UK teleprinters a problem exists - what to do when you cannot find one of these units?

Fred has written FSG - O - FSG firmware for the TW 39 cards - will this also work for the Double Current cards?

Is there a way that the interface card could provide switching of a relay to control the power to the machine?

Or, a more ambitious project, using the attached document, is there a way that the signalling unit could be simplified and made using modern components?

Some pictures of the signalling units commonly found in use with the Creed 444. For the cases where the machine has a dial integral to the Teleprinter, the control unit electronics are hidden in the stand!

Enjoy

Perhaps a Schematic would be useful for the above unit