[Elecraft] re bandwidth select on am mode re K3

[Joe Subich, W4TV]

> I also think it's confusing and should show the overall 
> bandwidth, i.e. 6 KHz like it does on SSB when you have the AM filter 
> available.

As Wayne has repeatedly stated, the K3 shows the audio bandwidth - 
not the RF bandwidth.  Since the AM mode does not support VSB 
(vestigial side band) or ISB (independent side band) the reporting 
is consistent.  

I would very much like to see the K3 support VSB-U and VSB-L (offset 
the display/carrier to the lower/upper -6dB points of the filter 
respectively and demodulate only the one sideband).  That provide 
enhanced fidelity and the opportunity to eliminate QRM from one 
side or the other.  With DSP demodulation it should be relatively 
easy to implement. 

73, 

   ... Joe, W4TV 
  


> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Dave G4AON
> Sent: Wednesday, March 26, 2008 1:35 PM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] re bandwidth select on am mode re K3
> 
> 
> It's been noted previously, with the excuse that 3 KHz is the upper 
> audio limit. I also think it's confusing and should show the overall 
> bandwidth, i.e. 6 KHz like it does on SSB when you have the AM filter 
> available.
> 
> 73 Dave, G4AON
> K3/100 #80
> -------------------
> On my K3, on ssb mode, I can select the wide am filter 
> position but if I 
> go to the AM mode, the widest bandwidth shown on the display 
> is 3 khz! 
> Should it not go to 6 khz as I do have that filter installed and it 
> works on the ssb and other modes except for the AM mode. Any 
> clarification or help with this would be greatly appreciated.
> Thanks from Fern
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