[GreenKeys] Lxd teletype transmitter.

[Nick England]

It all depends on your LESU and ASR model.

The cable from the TD base to the rear terminal strips (C) has 20-point
connector U

The "bare minimum" is to activate the TD clutch magnets...
(C137-U3-clutch_magnets-U5-C136)
They may be operated off 115vac or (with a series resistor) 120vdc

The magnets are connected in series with the manual TD_stop_run switch
(C134-U8-switch-U6-C135) and the TD_tape_out switch
(C139-U9-switch-U11-C140) - and also probably the SEND-REC switch on the
keyboard and the K-KT-T switch (C133-F10-switch-switch-F15-C132)

One schematic showing the clutch magnets using AC is here
https://www.navy-radio.com/manuals/tty/jh/ttyman9/drawings/m28-13.pdf

One schematic showing the clutch magnets using DC is here
https://www.navy-radio.com/manuals/tty/wd/UGC6K-LESU111-wd.pdf

Following all the jumpers on the C terminal strip you will see that the
clutch magnets and switches are powered from C132 and C140 - these will be
hooked to the AC source or via resistor to the DC source.

Have Fun!
Nick England K4NYW
www.navy-radio.com


On Sun, Mar 24, 2024 at 10:12 AM abowman89 via GreenKeys <
greenkeys at mailman.qth.net> wrote:

>
> Does anybody have a good diagram for a lxd teletype transmitter on a model
> 28 asr?
> Ive got the rest if it going but I haven't a clue how to wire the
> transmitter.  What's the bare minimum that has to be hooked up to power it?
>
>        Andy
>
>
> Sent via the Samsung Galaxy S24+, an AT&T 5G smartphone
>
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