[GreenKeys] Electrically Noisy Model 15 KSR

[Mike Douglas]

The Army units had an RFI suppressor on the keyboard. You can see the filter network in these drawings: https://deramp.com/downloads/teletype/Model%2015/TG-7-B%20Wiring%20Diagram.pdf

Mike

> On Nov 13, 2021, at 11:18 AM, JOHN MCCARTY <n9hrt at sbcglobal.net> wrote:
> 
> 
> Keepers of the green keys;
> 
>    I have a model 15 KSR that used to be in a private home for TTD service. I got it off Craig's list some time back.
> We use the machine as a demo unit at events and it works well. The crowds are always drawn to it. Here in Chicago we
> have a 2 meter FM channel we run these on. The problem is we usually have other radios running at these events and
> when the keyboard is in use it really rips up 20 meters. I ran a test using just one of my stations RX's and it was
> far worse on 20 that 80 or 10 meters.
> 
> Is there somewhere I can hang a cap or two and quite things down a bit?
> 
> Thanks for your help
> 
> 
> John n9hrt
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