[Elecraft] CESSB Duty Cycle

[Wayne Burdick]

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 <rmcgraw at 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