[ARC5] R-27/ARC-5 Hookup Question

[J. Forster]

Do earlier radios in the family also have it?

-John

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> On 7/20/2013 10:22 AM, J. Forster wrote:
>> I am still puzzled as to why they'd go to the trouble of bringing out
>> the
>> terminal. Some assembly line ladies spent years putting in that wire,
>> after all!
>
> The marginal cost of including the stripped wire in a laced cable and
> soldering at both ends in a production line doesn't seem very high to
> me, but YMMV.
>
>> If it was useful to serve as a sort of BITE it makes sense- a sort of
>> quick final test at the depot or radio maintenance shop- to decide
>> whether
>> the radio was OK to go in a plane or needed service.
>
> That seems to me to be a perfectly reasonable context, John.  A quick
> check of the five readings on the I-84 to see whether they were all in
> the proper range would be a way of checking the box on "okay for flight".
>
>> I don't really buy it was put in solely to test the 2x 7000 Ohm divider
>> resistors.
>
> I doubt that was the sole reason...there are seldom singular drivers for
> such things, but it was certainly a reasonable way to make an overall
> check...particularly if a given receiver had a log of its five readings
> over time.  I'm not defending the engineering rationale for including
> the capability...it might have been one of those government
> specification gotta-dos that drifted over from the RAT, which also had
> the screen voltage fed to the same rear terminal.
>
>> Can anyone think of another radio that has such a provision?
>
> Don't recall any, but that doesn't mean there weren't one or two others.
>
>   - Mike
>
>
>