[Collins] What is a Collins 176S-1

[Dr. Gerald N. Johnson]

Probably AM since the sideband isn't selectable. Maybe 618S-1 probably 
before 618T family. Winged emblem so before 1965. AM probably before 
1959. I did find a drawing number 522-0021-006 and that it was made at 
Cedar Rapids. A production unit would have had MCN or a date on the 
chassis somewhere. SOP was to use serial numbers below 100 for 
engineering prototypes so this was likely one of those. The cable 
connectors on the back are like those used in the R390 and R390A modules 
and other modular radios.

The chassis labels indicate there's audio compression and my limited 
information source that gave the drawing number called it a "Remote 
Amplifier". Rack mounted its unlikely to be mobile or aircraft, though 
might be shipboard but this one hasn't been treated for the tropics.

All google showed was the repeated epay posts and links to it from 
176S-1. Google found nothing for the drawing or part number.

My list Collins Equipment Type Listing didn't show any engineer 
responsible for the unit.

73, Jerry, K0CQ, Technical Adviser to the Collins Radio Association.

On 3/7/2015 1:36 AM, Dave Brown wrote:
> Ebay item 111611944710
>
>
> Apparently a control unit for a channelised radio. But what radio?
>
>
> 73 Dave ZL3FJ
>
>
> ______________________________________________________________
> Collins mailing list
> Home: http://mailman.qth.net/mailman/listinfo/collins
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Collins at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>