[Elecraft] CESSB (was Re: Software Update for KX3)

[Tom Azlin W7SUA]

Thanks Jim, I will try that on my KX3 and KX2!

73, Tom w7sua

On 7/17/2025 3:21 PM, Jim Brown via Elecraft wrote:
> FWIW, the benefits of CESSB can easily be approached by a combination of 
> judicious use of TXEQ to kill the low audio frequencies below about 500 
> Hz, and adjustment of COMP for an indicated 10-12 dB of gain reduction 
> on voice peaks. That combination provides an increase of "talk power" of 
> about 13 dB -- 3 dB for killing that wasted low end that makes no 
> contribution to speech intelligibility, and 10 dB for COMP. This is more 
> than two S-units, making 5W as effective as 100W!
> 
> I've been doing this and recommending it since my first K3 in 2008. Last 
> summer, I had a long ragchew of 40M with neighbor W6GJB, who was at his 
> cabin in the mountains with his KX3 and a compromise antenna. When we 
> started, he was tough to copy, but when I talked him through those 
> adjustments, he was armchair copy for nearly an hour until it got later 
> and the band went long.
> 
> 73, Jim K9YC