On 23 Oct 2023 at 14:35, Alan Fryer wrote:

>
> Ken's comments about "single signal" performance with the RAL reminded
> me of an article that explained how very precise control of
> regeneration can create that effect.  IIRC, the theory goes that one
> sideband was just barely in the oscillating mode (maximum selectivity)
> and the other sideband was not in oscillation, attenuating it. 
> Regeneration control is frequency sensitive, maybe this is an
> optimization of that ? .  I'll dig up the article and reference it to
> you all.
>
> Does this make any sense ?

Well, yes, but I was talking about the RAK, not the RAL.

I never noticed any "single signal" effect with my RAL. The RAL is HF, 300 Kc to 23 Mc. The
RAK is VLF, 14 Kc up to 600 Kc.

With my RAK, the "other side" of zero-beat simply isn't there...at all.

Ken W7EKB