[Elecraft] ESSB Works Well

[Barry N1EU]

W7GJ, Lance wrote:
> 
> I am very curious about this ESSB mode....I am getting my K3 in a few
> weeks, and 
> wonder what it sounds like with a normal SSB receiver using something like
> 2.8 KHz 
> filter.  Does it sound better/worse/distorted?  Or can you hear no
> difference unless 
> you have a wider receive filter? 
> 
A K3 ESSB transmit signal at 3.0Khz+ bandwidth will be heard with slightly
"more fidelity" (i.e., wider passband) than a non-ESSB transmit signal when
received on a K3 with a 2.7Khz filter.  That's because
the non-ESSB K3 transmit signal has an approximately 2.5Khz wide passband
and doesn't "fill" the 2.7Khz receive passband.  The ESSB signal won't sound
"distorted" - you just won't hear the entire transmit passband, but it will
still sound "very good".

Of course the ESSB transmit signal will be heard with increasing fidelity
(wider passband) as the receiving filter is widened.

FYI, there's a plot of the K3 transmit passband at the bottom of
http://n1eu.com/K3/K3_notes.htm

73,
Barry N1EU

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