[Milsurplus] Collins manuals

[WA5CAB at cs.com]

Dave,

Technically, the Collins 51Q and 56Q are not the forerunners to the TCS.  
They are the Collins in-house model numbers assigned.  When sold to USN, they 
were called TCS-nn, with "nn" mostly indicating different Contract Numbers 
rather than changes to the equipment.  All of the sets that Collins built 
for the US military had Collins numbers in the nn-n or nnn-n format.  Further, 
at least based on photographs in the TCS and TCS-4 manuals, early 
production for the Navy lacked TCS nameplates on the front panel and some are known 
to have 51Q or 56Q on the rear of the sets.  Or it could be that Collins 
saved TM production costs by using civilian model photographs in the early 
manuals.

That being said, can you answer the following questions:

Do the receiver and/or transmitter have posts in the corners or three 
handles?
Are the 12-pin (receiver) or 16-pin (transmitter) male chassis power 
connectors mounted to the front of the panel with four screws or are the 
connectors attached with four screws to a stamped steel bracket which mounts to the 
rear of the front panel with two screws?
Does the receiver have air core or iron core IF transformers?
Is one side of the transmitter RF Ammeter connected to chassis or to the 
antenna post?


In a message dated 09/25/2012 22:48:08 PM Central Daylight Time, 
davprin1 at optusnet.com.au writes: 
> Hello all,
> 
> I am looking for copies of manuals or schematics for 51Q-1 
> receiver and 56Q-1 Transmitter. These are the original 
> Collins forerunners of the U.S.Navy TCS series.
> 
> I am currently restoring a pair of these so pdf scans of 
> anything related would be great, thanks. I do have some 
> versions of the TCS series manuals.
> 
> Cheers
> Dave

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480