[GreenKeys] Looking for

[Jeff G]

My 2 cents - don't forget to put a fuse somewhere! Not sure what the surge
is on the loop but maybe .5amp or even .25 amp.

Jeff KC3GJX

On Thu, Jul 7, 2022 at 3:11 PM John, W9DDD <w9ddd at tapr.org> wrote:

> Hi Jeff.
>
> Option 1.  As you suggest, so check with Mr_RTTY for the connector part
> number 152466.  I use that method on my test bench for both the keyboard
> and the printer.
>
> Option 2.  Wire straight to the terminal screws on the selector magnet
> coils.  Be sure you get the polarity right.
>
> Option 3.  Get 2893WD (
> https://www.navy-radio.com/manuals/tty/wd/2893WD-6601.pdf) and see how
> the LESU is wired without a polar relay option.  That's the way I've
> approached it on a couple of machines.  You can have the keyboard and SM in
> series as the WD shows, or you have the option of separating them at the C
> terminal strip (C6,7 & 8,9?).
>
> This option will require up ending the LESU to get access to the terminal
> strips.  Not a fun job, but once done you will probably won't ever have to
> do it again. The 120 VDC power supply could also be removed along with the
> polar relay module.  I think another option for the PS is having the 120
> VDC available at the C terminals, if you thought it useful.  I'd have to go
> back to some documentation, but I kind of recall 20 and 21 might be where
> you'd normally see it connected.
>
>
> ---
> ----
> You said "tomorrow" yesterday.
>
> The above comments or recommendations are SWAG. Use at your own risk.
> John, W9DDD
>
> On 7/7/2022 12:46 PM, w1aea wrote:
>
>
>
> Hi all
> Working on a Model 28 machine, That uses a Polar Relay, I'd like to bypass
> all that Wizardry and wire the selector magnets straight into my 60ma.
> Loop. To do this I'm looking for the socket that mates the Selector coil
> plug! It's called "automatic typer plug" in the manual I have,  20pins
> female anyone have one in the spare parts box! If so let me know please,
> Thanks   jeff W1AEA
>
> Sent from my Galaxy Tab® A
>
>
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