[Milsurplus] TCK-4

[Rob Flory]

Hi,
I used to run a TCK (-0).  I used a dynamotor for the 500V supply because
it gave excellent regulation like the motor-generator sets do, yielding a
very stable signal.  I have not been impressed by TCK and other
transmitters run on rectifier supplies(including the stock supply), which
even with swinging chokes and all that have enough voltage drop under
keying that they chirp.

Most shipboard transmitter motor-generator sets have a series coil in
addition to the shunt coil,which boosts the voltage under load to
counteract the IR drop.  On the TBK transmitters at USS Massachusetts the
voltage does not budge one iota from key up to key down.  You can't do that
with a rectifier supply without a regulator.

I always thought it would be fun to make a regulator with a string of VR
tubes and a vacuum tube follower.

The dynamotor also gives a nice ambiance of rotating machinery.  I used one
from an aircraft transmitter.  Which one I don't recall but I think it had
a DY-2 in the nomenclature and I am running it on 24 volts.

Rob K2WI
PS my TCK is available
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