[ARC5] Trivia Challenge - More

[Mike Morrow]

Ok...here's a twist on command set knowledge:

The wiring diagram in Dave's post will work perfectly once the BFO and RF GAIN circuitry is removed from the rear connector (leaving only the control circuitry wired to the front adapter panel), for ALL ARA and SCR-274-N receivers.

BUT it will NOT work for ANY AN/ARC-5 receiver.

Why not?

Mike / KK5F

-----Original Message-----

>Ding! Ding! Ding!  Winner!
>
>On Fri, Sep 4, 2015 at 5:49 PM Kenneth G. Gordon <kgordon2006 at frontier.com>
>wrote:
>
>> On 4 Sep 2015 at 21:42, Dave Merrill wrote:
>>
>> > Can you spot anything amiss in this diagram from Volume Four of *Hints &
>> > Kinks* 1949?
>> >
>> > http://s150.photobucket.com/user/r-390a/media/HK%202.jpg.html
>> >
>> > What would happen if you wired it up this way?
>>
>> The screen voltage would be grounded when the rear BFO switch was set to
>> OFF. The receiver would probably go dead and/or one of the two black
>> resistors in the rear would get hot, or the dynamotor would be dragged down
>> to low output and would get hot.