[Elecraft] KX3 Audio Compressor

[Gary - NC3Z]

This has actually been a topic of several discussions on the KX3 Yahoo 
group. If you look at the KX3 on a spectrum analyzer you will see that 
when the compressor is turned on that the TX BW goes from about 2.8KHz 
to 2.4KHz. I have asked Elecraft if there was a way for another option 
to be added if one didn't want that narrow of a bandwidth. I 
unfortunately always get comments that the audio is "pinched" when the 
compressor is on and many report they hear me better without the 
compressor, although the audio is weaker. Opposite of all my other 
radios where I always get unsolicited comments on the great audio.

Peter HB9PJT just posted on the KX3 group a great QEX article written by 
W9GR about FlexRadio using Controlled Envelope Single Sideband in DSP 
producing very effective speech and compression. In reading the article 
I kept thinking how much greater the KX3 would be if they could 
implement this. Elecraft, is this possible? Please?

Gary Mitchelson
NC3Z Davidsonville, MD FM18
NC3Z/4 Pamlico County, NC FM15
http://www.mitchelson.org/

On 11/11/2014 9:27 AM, David Ahrendts wrote:
> Feeling rather chuffed to have my Heil Gold Elite 5.1 mich and my Dr. Dre Beats ear buds with my KX3. Could run a disco! The Heil has very broad audio response for amateur radio which I prefer for casual com. I’ve noticed that a ll of that fidelity goes away when I invoke the audio compressor even at level 1. What’s actually happening when the compressor is turned on? Is the audio intentionally shaped differently? Highs and lows clipped off?
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> David Ahrendts, KC0XT, LA
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> David Ahrendts   davidahrendts at me.com
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