[ARC5] Re-reading Gordon White article...

[Kenneth G. Gordon]

On 6 Jun 2013 at 13:02, Ian Wilson wrote:

> 
> I would guess that you want the mixer tank

Not the mixer tank: the RF amp plate tank.

> to resonate somewhere
> around the geometric mean of the RF and the IF - so it can act as
> load of reasonable reactance to the mixer plate

Not mixer plate: sort of the mixer grid, but certainly the RF amp plate in this case.

The mixer grid has a closely coupled (to L-2) coil, L-3, in parallel with three frequency-setting 
and tuning capacitors.

> without risk of
> oscillation at either RF or IF. This is a pure guess, i.e. I have no
> data to back this up :)

Hmmm...well, you may be correct, Ian. However, I have never seen this before, and would 
like to know what Dr. Drake and the boys at ARC had in mind.

Ken W7EKB