[Elecraft] K3 RX too sensitive.

[Don Wilhelm]

  Mike,

For those who want an additional attenuator added such that the K3 
S-meter does not increase like it does when the RF Gain is backed off - 
install an external attenuator between the RX ANT OUT and RX ANT IN 
jacks and tap RX ANT to switch it in or out.

That will allow the user to reduce the RX gain while leaving the RF Gain 
set at the full clockwise rotation and the S-meter will read from the 
bottom of the scale.

Of course, that additional attenuation is not calculated into the S-MTR 
ABS calculation in the K3, so you will have to mentally add an S-unit or 
two to what the S-meter is showing - with a 6 dB attenuator, add 1 
S-unit, 12 dB, add 2 S-units, etc.

This scheme does require the installation of the KXV3.

73,
Don W3FPR

On 5/18/2011 8:36 PM, Mike Rodgers wrote:
> I run the attenuator on just about ever band to reduce the band noise floor. I wish for a stronger attenuator. That would take the rf gain and meter issue out of the equation, or a rf gain that doesn't make the meter sit on s9.
> I don't know if either is easy to implement. Maybe I need to change
> Agc threshold. I'll keep plugging away at it.
> I like the way the gentleman described the action on the eagle where the meter was not changed by ATT/PRE
>   or rf gain.
>
>