[Elecraft] KX3 DX

[Jim Brown]

On 8/20/2018 7:37 AM, K3ICH wrote:
> As the saying goes, "Five watts is five watts".

The saying is an oversimplification. The KX3 includes two important 
tools to increase talk power on SSB -- TX equalization, which can be set 
to emphasize speech intelligibility and minimize power wasted below 400 
Hz, and amplitude compression and peak limiting, which brings quieter 
speech sounds closer to the level of louder ones.  When set for about 10 
dB of compression on voice peaks, it makes 5 w the equivalent of 50W, 
and the TXEQ settings add 3 dB, making 5W the equivalent of 100W.

These tools, which are called "audio signal processing," have been used 
in broadcasting since at least the '50s. They are also built into the 
K3, K3S, and KX2.

73, Jim K9YC