[GreenKeys] Collins 709D-1 FSK keyer & 706A-1 TU

[Duncan Brown]

Robert,

I was not aware of the differences of the AN/URA-8(*) versions. Similar 
to all the various versions of the AN/GRC-26, I guess.

I was surprised at the simple layout of the Collins 706A-1 converter, 
very few adjustments & controls.  Probably good for most commercial 
users, but not flexible enough for the military.

Have fun,

Duncan
K2OEQ


On 05-Dec-14 02:24, WA5CAB--- via GreenKeys wrote:
> Duncan,
>
> Unless you are older than I think you are, you may have never actually 
> seen an AN/URA-8, which consisted of two CV-60's and a CM-14.  
> AN/URA-8(*) is sorta like the R-274(*)'s, over which fights have been 
> known to break out between someone who had one of the models that was 
> an SX-73 and someone else who had one that was an SP-600 derivative.  
> About the only thing common between AN/URA-8 and AN/URA-8A/B is that 
> they were the same size, same color, and used the same external 
> connectors. I always liked the CV-60 better than the CV-89.
>
> None of which answers your question, of course.  The only reason I can 
> think of is that the CV-89 was FM and not limited to 850 cps shift.  
> Which someone in the Navy decided was important.
>
> In a message dated 12/04/2014 19:55:40 PM Central Standard Time, 
> duncanancy at earthlink.net writes:
>> George,
>>
>> Thanks for your comments on these Collins FSK units. You seem to be the
>> only one to know about them.  Apparently Collins did not make many of
>> the 706A-1 TUs, but if they were so much better than the URA-8, makes
>> one wonder why.
>>
>> Do you know anything about the 600 hz shift capability??
>>
>> Thanks &73,
>>
>> Duncan
>> K2OEQ
>
>
> Robert Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
>
>
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