That said, we will be playing with this in DSP code to see if it's
worth the trouble.
In theory it should be worth the trouble as the distortion (other than
any increased background noise) should be less than typical "hard"
clipping with a non-phase equalized filter (for the K3, that's the
KFL3B-2.7 or KFL3B-2.8). Put another way, the user should be able to
clip "harder" with less distortion using the CESSB algorithm.
73,
... Joe, W4TV
On 1/21/2016 10:39 AM, Wayne Burdick wrote:
The finals could handle it, just as they handle full-carrier modes
like RTTY and FM. The bigger problem, specifically described in the
article, is the power supply. Many operators who use SSB or CW only,
not full-carrier modes, are using power supplies that are barely
adequate. They can handle 20+ amps at light duty cycle, but not
CESSB, etc.
As I mentioned previously, both the K3/K3S and KX3 have excellent
speech compression already, and the difference between a fairly
aggressive compression setting and CESSB is, in practice, rarely
going to make a difference. That said, we will be playing with this
in DSP code to see if it's worth the trouble.
Wayne N6KR
On Jan 21, 2016, at 6:56 AM, Bob McGraw K4TAX <rmcg...@blomand.net>
wrote:
The recent article in February QST describing the CESSB mode is of
interest. Just wondering if that mode can or will be added to the
code operating the K3S? Also, wondering if the higher duty cycle
of the CESSB mode will exceed the ratings of the PA stage and that
of the KPA500? From what I read it seems that most SSB rated amps,
past and present, may have inadequate ratings for the higher duty
cycle.
Thoughts?
73 Bob, K4TAX
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