[Milsurplus] TCS Tx and RX identity

[Dave]

Once again, you are spot-on, Robert.

Came back from my weekender this afternoon and dug out the 
two units. Removal of the cases show that neither the tx or 
the rx have screw holes for the ID plates looking at the 
rear of the front panels.

However, on the rear of the chassis, both have small Collins 
ID plates. The tx is Model 56Q-1 with serial number of 12364 
and the rx is Model 51Q-1 with serial of 22259. The receiver 
also has an orange U.S. Navy stamp (Anchor with US) on the 
back. Serial numbers seem awfully high!

Have not found anything with a date on it as yet.

I did bring back from my weekender storage, a TCS-12 rx with 
a serial of 379 on Contract NXsr36727. It has a couple of 
inspection dates of 24 and 25 Jan 1944.

Many thanks, Robert.

Cheers
Dave





On 25/11/2010 2:19 PM, WA5CAB at cs.com wrote:
> OK.  You're welcome.
>
> I have now looked at the drawings and photographs in the 
> three manuals (56Q transmitter and TCS and TCS-4 sets).    
> In all three, the photographs are identified as Model (or 
> Collins Model) 56Q Transmitter.  There is no nameplate on 
> the front panel, nor any holes for mounting one.  The 
> lettering is engraved.  And there is no plate made like a 
> circle with an "X" through it behind the roller coil 
> knob.  In the latter two manuals the receiver is 
> identified as a 51Q and the top third of the front panel 
> looks strangely bare.  It took me a while to realize why.  
> No nameplate,
>
> So my conclusion is that you have a 56Q transmitter.  And 
> which of the first five contracts it was built on will 
> probably never be known (unless there is anything on the 
> top of the cabinet or inside the chassis).
>
> As I said earlier, I do not have a TCS-5 manual.  The 56Q 
> manual is undated but internal evidence (a reference to an 
> R&SB issue) dates it to later than 31 July 1942.  The 
> TCS-4 manual is dated 31 March 1942.  And the base TCS 
> manual is dated 16 April 1941.  The (non-Collins) TCS-6 
> manual is dated 29 October 1942.  So presumably the TCS-5 
> is in between March and October 1942.
>
> Look for evidence on the back of the receiver front panel 
> of nameplate mounting holes.  Two could have been cut out 
> by the meter hole but if you find the other two, my 
> opinion would be that it is a TCS-5.
>
> Also, in my previous I used as an example TCS-14.  Some 
> might read into that that this was the final order or 
> model.  There was a TCS-15, also made by Air King.  So 
> there were a total of 15 "models".  Which is not a record 
> number.
>
> In a message dated 11/24/2010 7:02:54 PM Central Standard 
> Time, davprin1 at optusnet.com.au writes:
>> Thanks Robert