[ARC5] nbfm detector (6BN6 - a good valve)

[mac]

Have found the RAL to be a remarkable receiver, definitely  NOT the  
two tube "blooper" you (or your father) built in HS.  Interesting to  
note that the 6D6 regenerative detector (at least in the RAL) has the  
suppressor grid connected to the plate, not to ground as usual.   
Haven't seen this in any other regen circuit of the period.  Anyone  
have a clue?

Dennis D. W7QHO
Glendale, CA



On Jun 7, 2010, at 8:14 PM, Roy Morgan wrote:

> One well regarded regen receiver pair, the RAL and RAK, use the 6D6 as
> a detector.  (Regeneration is controlled via a pot in the screen
> supply.)  These radios were developed in the 1930's, and so may not be
> valid comparisons against more modern tubes.
>
> Are there any folks who use these radios regularly?  (i don't but will
> after a while.)