[Milsurplus] TCS in operation

[WA5CAB at cs.com]

Ben,

There were two TCS's (don't recall the model number) in service aboard USS 
Valley Forge (LPH-8) when I got off Active Duty in November 1968.  They were 
installed when the ship was commissioned in 1946 and while I was aboard got used 
at least every time we got underway and until we dropped the tugs and cleared 
the sea buoy.

As far as pulling the AC from the receiver power cable is concerned (there is 
none in the transmitter cable) don't forget that it and the transmitter cable 
both have 230 VDC on some of the wires.  Having forgotten this, I once spent 
a full day trying to figure out why a receiver on the bench was deaf.  No 
screen voltage on a 12SK7 will do this.  :-)

In a message dated 2/21/2008 2:32:57 PM Central Standard Time, 
Military1944 at aol.com writes: 
> I don't think suppressing the back emf off the relays will in any way 
> affect the 'tone' of the CW signal. Might lengthen the life of diodes 
> and such in the 12v line though.
>   
>  After all, I don't think the designers of sets really thought some 
> nutter would still be using them in 60 years hence.  Their life 
> expectancy must have been counted in weeks.
> 

Robert Downs - Houston
<http://www.wa5cab.com> (Web Store)
MVPA 9480
<wa5cab at cs.com> (Primary email)
<wa5cab at comcast.net> (Backup email)
   
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