[Elecraft] [K3] Fw: New 3.41 IMPROVED RX LOW-FREQUENCY RESPONSE in AM/SSB/CW MODES

[TomB W1PKX]

Thanks Dick,

I can see "Shift + Width/2 = High" is true for SSB, but not for AM (i.e.
double sideband).

It is not obvious why in AM the HI cut is 1 Khz less than the Width. There
is no setting of SHIFT/WIDTH/LO which indicates HI = 5 Khz.

I was under the assumption a 5 Khz width implied +/- 5 Khz from the carrier
which implies the highest AF component is 5Khz.

What does the "nominal" shift =1.5 imply for AM ? I would think, nominally,
the roofing and DSP filters would be capable of zero shift (i.e., centered
on the carrier) in AM. 

To me, the WIDTH,SHIFT and HI values are inconsistent for AM. 

Tnx

Tom




Edward Dickinson, III-2 wrote:
> 
> Shift + Width/2 = High
> 
> 
> Best regards,
> 
> Dick - KA5KKT
> 
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