[ARC5] Trivia Challenge - Yet More

[Chris Bowne]

Driving a level meter to aid in determining a null with an RDF loop antenna?

Sent from my iPhone

> On Sep 5, 2015, at 0:00, Mike Morrow <kk5f at earthlink.net> wrote:
> 
> Very good!  Now I think you're ready for this:
> 
> There is, in fact, an audio line connected to the front panel adapter connector for the R-23, R-23A  R-24, and R-148/ARC-5 "navigation" receivers.  It is a filtered for a low frequency audio signal from the 12A6 cathode, and does not come from the AF transformer secondary.
> 
> What is that for?
> 
> Mike / KK5F
> 
> 
> -----Original Message-----
> 
>> Because the audio line (TEL) is not connected to J1 on the front panel in
>> the AN/ARC-5 receivers.
>> 
>> Dave
>> N9ZC
>> 
>>> On Fri, Sep 4, 2015 at 7:52 PM Mike Morrow <kk5f at earthlink.net> wrote:
>>> 
>>> 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.
> 
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html