[ARC5] ARA heater configuration

[Jack Antonio]

On 7/4/2016 4:18 AM, AKLDGUY . wrote:
> Hi Dave
>
> Many thanks for that link to the SCR-274-N Manual. I googled many
> times for ARA heater circuit and similar but found nothing. I must
> have had a mental block and didn't think to search for the SCR manual
> because I already have a hard copy of the AN/ARC-5 manual.


There is a "gotcha" here.

The receiver filament circuit will be exactly the same between the ARA 
and SCR-274N.

However, the AN/ARC-5 receivers use a 12SF7 as the second IF amp, which
has a different basing diagram from the 12SK7 used in the ARA and SCR-274N.

Just something to be aware of.

Jack Antonio WA7DIA/4