[Boatanchors] TCS Tx & Rx

[J. Forster]

I'm no CW op but I'd expect the diode would lengthen the relay release
time, maybe quite a lot.

-John

==============



> 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
> ______________________________________________________________
> Boatanchors mailing list
> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Boatanchors at mailman.qth.net
>
> List Administrator: Duane Fischer, W8DBF
> ** For Assistance: dfischer at usol.com **
>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2012.0.1913 / Virus Database: 2114/4890 - Release Date: 03/23/12
>
> ______________________________________________________________
> Boatanchors mailing list
> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Boatanchors at mailman.qth.net
>
> List Administrator: Duane Fischer, W8DBF
> ** For Assistance: dfischer at usol.com **
>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>