[HBR] modifying the 262kHz K-Tran IFs to 100kHz

[Walt Hutchens]

Dan wondered:
> I don't believe anyone has pointed out that  the stage gain will be less with
> the modified 262 kc transformers than with  "genuine" 100 kc units.
> 
> How significant will this loss of gain  be?

Assuming the transformers are similar to the 'real' 100 kcs units,
then both the inductive and capacitive reactance will be in proportion
to the frequency. So there'll be a loss of gain of 1/2.62 or maybe 8-9
db per stage. However these are very high Q units to start with
(probably significantly better than the original 100 kcs xfmrs) and
the HBR designs generally have way more than the necessary gain.

I'd bet it'll be fine.  Worst case you could upgrade the type of tubes
used with them, as the original HBR's used very early (low gain)
types.

Walt
Still fooling around with the BFO for an hour or two a week ...