re [Elecraft] bandwidth select on am mode re K3

[ERic - WA6HHQ]

We actually have -both- IF and AF DSP filtering in tandem in the K3 for best
performance. The confusion came about because we chose to display the audio
b/w, which is 1/2 of the IF b/w for AM. (2 identical sidebands in AM.)  Of
course in SSB the IF b/w and the Audio b/w are the same since SSB only has
one sideband, so there was no confusion there. 

In response to popular demand, we're going to increase the AM b/w display 2X
to match the IF b/w in the next K3 s/w release. :-)  So for the 6 kHz AM
filter it will display 6 kHz max instead of 3 kHz. 

73, Eric   WA6HHQ
----


G4ILO wrote:
> 
> 
> Joe Subich, W4TV-3 wrote:
>> 
>> But it's not 6 KHz ... it's 3 KHz audio bandwidth and that is 
>> what is shown on the display.   The DSP bandwidth is not the 
>> same as the RF/roofing filter bandwidth.
>> 
> But it's 6KHz of RF that the signal is decoded from. 6KHz worth of band
> noise and QRM will be present.
> 
> I'm not even sure you're correct in saying the DSP bandwidth is 3KHz. This
> is IF DSP, isn't it, not AF DSP as in the K2?
> 

-- 
View this message in context: http://www.nabble.com/re-bandwidth-select-on-am-mode-re-K3-tp16310886p16329491.html
Sent from the Elecraft mailing list archive at Nabble.com.