[Milsurplus] Yet more on my TCK-4

[Kenneth G. Gordon]

Well, I am becoming more and more intrigued by this thing. 

The chassis of the built-in power supply is stamped USN in ink, there is a long terminal strip 
on the left side labled TB-21, and all the wiring to and from it is very carefully and 
professionally laced and cabled.

It also has 4 ea 866A rectifier tubes, at least one 5U4, and at least two VR tubes in it. The 
866As are all lined up on one side of the chassis and parallel to a long-edge.

The back of the lower swing-out panel, which in the original transmitter covered the terminal 
boards and had two large relays, K-102 and K-104, mounted to it, has had those two relays 
removed, and several other smaller relays mounted on it, a window cut into the center of it 
so one can see the rectifier tubes, and the  window is very professionally mounted with a 
frame, screwed very carefully to the panel, around the glass.

There is a clock type timer relay, and two heavy duty wire wound pots, one labled in pencil 
PA -Bias, and the other V-102 Bias mounted there. There is also what is obviously an 
overload relay. 

Just above that panel, and just under the 4 original pilot lights, there has been another 
much smaller panel added which contains a two-pole 15 amp circuit breaker, labled Main 
Power Off On, and a large toggle-switch labled HV Off On. From the breaker, I would think 
that the input voltage is 220 VAC.

All the modified control panels which have been added to the front panel are carefully 
mounted with large binder-head screws, all of which were then painted with black wrinkle 
paint, and all controls were carefully and accurately labled with decals which were then 
sealed with some sort of clear laquer..

I am becoming more and more suspicious that this transmitter was professionally modified, 
perhaps even by some military organization, or maybe even by the OEM.

I can think of only one amateur radio operator who would have put such thought and effort 
into a rig like this, and that would have been one of my Elmer's, Woody Davey W7CJB (SK).

Has anyone here ever seen or heard of such a project being done to other military 
equipment?

As I mentioned, it is horribly dirty, and I will probably have to completely dismantle it in order 
to bring it back from the dead. It looks as though it has been stored, perhaps outside, for 
many years. But it is complete.

The frequencies written (in pencil) on the tuning chart are, 3237, 4025, and 5217.

I am going to try to post some photos to the forum.

Ken W7EKB

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