[Elecraft] K3 RX too sensitive.

Mike Rodgers mikerodgerske5gbc at yahoo.com
Mon May 23 15:22:52 EDT 2011


Don, thanks for that tip. Knew I should have got that option. 
I may do that. 

73
Mike R

Sent from my spy ring

On May 23, 2011, at 9:24 AM, Don Wilhelm <w3fpr at embarqmail.com> wrote:

> 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.
>> 
>> 


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