[GreenKeys] WU 28ASR WIRING

[Nick England]

Oh yeah. Is it possible that the LXD gear set speed doesn’t match the
printer gear set speed?
I don’t know why someone would have them running at different speeds but it
is possible.
Nick

On Sat, Feb 13, 2021 at 10:34 PM John Hargett <kg5ylg at austin.rr.com> wrote:

> Getting thru my 28ASR that I got some time back.  Have it receiving ITTY
> now, able to also punch tape, as well as run tape.  Have a couple of
> questions that I am sure someone out there has more knowledge than I  (
> that doesnt take too much) about these machines.  Two items I am looking at
> are:
>
> 1)  The LESU, which is a Western Union 9797 wiring cabinet, has the
> positive side of the loop supply tied to ground @  C-2 and the negative
> floating.  What is the design behind this?  I have looked at other LESU
> wiring diagrams and do not see them showing this. Would it be detrimental
> to put the neg at ground potential?
>
>
> 2) When I run tape on the LXD, it comes out all random and missing CR and
> LF .  Ran a tape RYRYRY  and get not RYRYRY on print.  Does not LF or CR at
> correct times.  Tape was preceded by multiple LF and CR then LTRS, Ran 40
> characters RY, followed by CR,CR,CR,LF,LF, then 40 more RY followed by CR,
> CR, CR, LF, LF, then 40 more RY followed by CR, CR, CR, LF, LF.  What i got
> on type was  a couple of  over types at the start, then
> KCBSCCBSCCBSCCBECCBECCBSCCBER then it did a single LF and continued with
> the same basic characters, then did a CR and same basic characters.
>
> Is this a timing issue with the LXD signal generator?
>
>
> Dont know if it will come thru, but a copy of the 9797 wiring diagram is
> attached.
>
>
> Thanks in advance
>
> John
>
> KG5YLG
>
>
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-- 
Nick England K4NYW
www.navy-radio.com
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