[Boatanchors] TCS Tx & Rx

[Sandy]

The TCS transmitter keying relays are a noisy banging.  You get used to it 
after a while though!  DON'T get across the key when sending as you will get 
a hell of a belt from the "inductive emf" spike coming from the relay coil! 
It is easy to eliminate with a silicon diode (1N4005, 1N4007)  across the 
relay coil.  Hook it up so the diode won't conduct with the key up.  It will 
kill the inductive kick the coil delivers.

TCS was designed by Collins.  Maybe that's one reason why they lasted so 
long?

I have been wanting to get a matching receiver and add a simple "Q 
Multiplier" to narrow selectivity on CW.  Never got around to it!

73,
Sandy W5TVW

-----Original Message----- 
From: whitebear1122 at comcast.net
Sent: Saturday, March 24, 2012 8:34 AM
To: boatanchors at mailman.qth.net
Subject: Re: [Boatanchors] TCS Tx & Rx



I've only seen a pair of TCS in person once.  They were the emergency radios 
in the Auxiliary Radio room aboard the USS Duluth LPD-6 as recent as 1973. 
That's a loooong time of service isn't it!  They were set up and ready to 
provide emergency communications when all else failed.  It was quite an 
honor I would think because while the main radio room and transmitter room 
was jammed full of high power modern transmitters and receivers, here in the 
Auxiliary Radio room was an old TCS pair, all set up, ready to go.  The only 
reason I knew about them was that I had assigned radio maintenance duty in 
Aux Radio, otherwise only a few the RM-1's and Chiefs knew about it.  I 
don't remember ever turning them on so I must have had to maintain something 
else in that room like changing batteries in the battle lanterns.



It would be intriguing to own a TCS set up just for the sheer pleasure of 
operating it as the OT's operated it.  I have an unmolested BC-348 with 
dynamotor and mount sitting on the backroom shelf awaiting restoration. 
While I"m not expecting Yae commwood performance, I am expecting to work 
pretty good,  look a whole lot better and be alot more fun to  operate and 
use than a Yaecommwood.    I listened on one back in the late 60's at a 
friends Novice station.  The 348 sounded fine, tuned smooth, can't wait to 
hear it again.



73, Scott WA9WFA
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