[Elecraft] CM 500 setings

[Bob McGraw - K4TAX]

I'd start with the anti-VOX value at 0.  Then speaking normally with the 
headset boom about 1" to 2" from your mouth, advance the VOX Gain until 
you get reliable keying.  Then advance the anti-VOX gain to about 10.   
The purpose of the anti-VOX circuit is to prevent the received audio 
coming from the speaker or the headphones from tripping the VOX.  Since 
you are using a headset, there is very little signal getting from the 
headphones to the mike.   To adjust the VOX delay or hang time, it is 
set with the DELAY {see page 14} Also see page 31 and 56 of the manual.  
Too high of anti-VOX level typically will cause false action of the VOX 
circuit.  The objective is to run both the VOX gain and anti-VOX values 
as low as practical yet maintain reliable keying.  Also make sure the 
DELAY is not too short that causes the VOX to un-key during syllables or 
between words or phrases.

Adjustment is a simple process if you start from the beginning. Also, 
the mike-to-mouth position must be the identical place each time in 
order for the VOX to work reliably.   If you change from listening with 
headphones to the speaker, either internal or external, the the anti-VOX 
value will require changing.  This will then require the VOX Gain to be 
changed as well.

73
Bob, K4TAX

On 10/21/2015 9:44 AM, Scott via Elecraft wrote:
> HI,
>   
> I'm setting up the CM 500 headset with a new to me K3 for the first time,
> and having a hard time getting the anti-vox and vox gain balanced for
> reliable trip without tripping every time I touch the headset or cable.
>   
> Can anyone recommend a good starting point for this?
>   
> Thanks, Scott ka9p