[Milsurplus] TCS in operation

[Military1944 at aol.com]

Hi all, 
 
I know the TCS has been covered over and over but having recently acquired  
another one I am now going through the testing procedure once again. Its been  
some time since I messed with the TCS I already had, its just like going back 
to  school, hi. 
 
Anyway, I have the tx going, damaged meter and new relay fitted. While  
testing it I was using a croc clip to ground the keying line at the front jack.  I 
noticed there is quite a spark when the contact is lifted, ie the back emf off 
 the 2 relays must be quite a bit. Thinking on the fact the set is CW keyed 
via  these relays then even at 12 to 15wpm there are going to be quite a few 
clunk  clicks on them. Has anyone (bothered) to fit either a reverse diode or an 
RC  filter across the key line ? to help suppress these clicks and back emf  
voltages? or should one just get on with it ?
 
I do intend to bypass the ac mains on/off switching in the tx and control  
box, I'll fit a decent on/off switch to the psu chassis and disconnect the ac  
feed up the leads. I don't like the idea of 240v ac going through the various  
cables, not 60 odd years on.  
 
regards, Ben. G4BXD.



   
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