[Milsurplus] TCS Transmitter Tip - Snubber

[David Stinson]

I've revived three TCS transmitters to original design
and run them from original dynamotor supplies.
Brad W.  take a look (had to replace a bearing):
https://goo.gl/photos/p3SRrZ5Y2uomNdHe9

All three transmitters have had an issue with arcing 
across the High B+ contacts on the TR relay.  
This causes the PA Current meter to stay above zero 
while key-up and you will hear the arcing in the receiver.
If allowed to continue, the contacts will be destroyed
and other damage will occur.

If  you remove the transmitter from its case, lay it
on its back and remove the outside PA 1625, 
you can access the contact set.  Photo:
https://goo.gl/photos/d4UuG29fZ6DCyFdH9

There is just enough room to install a "snubber,"
which is a capacitor and resistor in series, across
the contacts.  Values are not critical; the one 
pictured is .047 1KV in series with 240 Ohms.
.1 and 180 Ohms will also work.  Reinstall the 1625
and make sure you have clearance.  Photo:
https://goo.gl/photos/h3XGqeCB78XtEXXN6

This will stop the relay arcing.

73 DE Dave AB5S