[GreenKeys] physical tape format question

[David I. Emery]

On Tue, Mar 09, 2010 at 09:10:55PM -0600, Don Robert House wrote:
> 
> As luck would have it I was given the job of designing the last Type 2
> installation at Paddock Publications (now the Herald) in Arlington Hts.
> Illinois when I was in the circuit provisioning center.  Somewhere here
> I have a copy of my design.  The AP machines were interesting as
> they came with a special controller with options for different types of
> news.

	The actual wire signal was 202 type AFSK (similar to packet)
ASCII at 1200 baud... with a micro based controller that filtered out 
the desired news based on various message headers and codes.

> 
> The most fun however was the Type 4 & 5 with discrete coding
> and error detection and correction, but that is another story.

	That must have come later... or not been used by the AP....



-- 
  Dave Emery N1PRE/AE, die at dieconsulting.com  DIE Consulting, Weston, Mass 02493
"An empty zombie mind with a forlorn barely readable weatherbeaten
'For Rent' sign still vainly flapping outside on the weed encrusted pole - in 
celebration of what could have been, but wasn't and is not to be now either."