[GreenKeys] Conceptually Speaking Model 28 ASR

[Larry Tighe]

Jack and Russ,

Thanks....yes, mine come up on 129-130.  I'm told the clutch is 120 VAC so I 
can handle all this now.

My schematic is of the machine without the cross connects.  I cleaned out 
the "rat's nest" of wire and went back to installing per the schematic.  My 
BSP's didn't show the cross connecting on the "C" strip.

One concept I've always had trouble with is the way TTY Corp intermixes 120 
VAC with the rest of the machine.  I'm used to telco equipment and the 
avoidence of 120 AC near their circuits.  With TTY you can find 120 on the 
same strip as the DC circuits !!

OK, thanks again folks....pix up on the site when she's 
finished...hopefully, this weekend.  There's incredible satisfaction when 
you fire up this old derelict, rotate the range finder and she starts 
printing W1AW perfectly.

Most grateful,

lar
K2JIA
www.antiquetelephone.com





> Lar,
>
> The TD contacts are in series with the KDB contacts.  Either the  TD or 
> the
> KBD can break the send circuit to transmit.  I have my TD  contacts on C 
> 129
> and C130.
>
> Take a look at the RTTY dot COM site and look at the diagrams for the 28 
> ASR
> in the Technical Library under Teletype Machines for the Model 28 
> electrical
> drawings.
>
> 73
>
> Russ.