[Elecraft] K3 Crackling audio with Noise Gate running

[Don Wilhelm]

Lance,

If that is a standard Heil headset (with a dynamic mic element like the 
HC4 or HC5), then you should *not* have bias turned on.  If you have the 
Proset K2 (with an electret mic element) or a Proset with an -iC (Icom) 
suffix, that also has an electret element and will require bias.

The "H" or "L" refers to the microphone gain range and *not* to the bias 
level.  You may want to try the low range to have more control over your 
mic gain (your mic level setting will require higher numbers).

73,
Don W3FPR

Lance Collister, W7GJ wrote:
> Howdy!
>
> I am using the Heil headset with the K3, and have the mic connected into the rear 
> panel (the front panel connection was having RF distortion) with the HIGH bias level. 
>     The Mic gain is less than 5 and the compression is 10.  The ALC is never out of 
> the indicated range.
>
> With the TX GATE turned ON, I get reports of the audio sounding slightly distorted 
> and there being "crackling noises".  I can hear these crackling sounds in between 
> syllables when I turn up the monitor loud in the headphones.  All the crackling 
> noises disappear when I turn off the TX GATE.  Do I have something adjusted wrong, or 
> is it just natural to have the crackling noises and distortion when the TX GATE is 
> on?  I would prefer to run without any distortion, but my loud blower is right behind 
> me and it is strong into the mic like a jet plane in between syllables without the TX 
> GATE.  Do I need to choose between the two evils?
>
> I would appreciate any guidance.  Thanks!  VY 73, Lance
>   
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