[Elecraft] RF gain sweet spot

Don Wilhelm w3fpr at embarqmail.com
Thu Jul 21 16:34:08 EDT 2011


Ed,

When one reduces the RF Gain on the K3, the S-meter indication increases.
So how are you accomplishing this "S-meter dip"?

I do not doubt your results, but perhaps your description of the S-meter 
deflection has been misunderstood.

73,
Don W3FPR

On 7/21/2011 4:00 PM, K7WIA wrote:
> Yes I am using the K3
> I was using the preamp that is in the K3,    I also have the ARR P50VD
> preamp on the back of the K3 but using it just raises the background noise
> to S7.
> Remember I live in the city.  I can turn off the preamp that is in the K3,
> disconnect the antenna listen to the hiss of the K3, and then hook the
> antenna back and hear the noise increase.. i am going to try it with out
> using any preamp at all...I can still detect the weak beacon that are in my
> area.  and still hear a increase in noise when the antenna is connected. but
> just to reduce the background noise has helped my 73 yo ears make the weak
> ones stand out better.
> even without the preamp on I still get the 2nd bar on the S meter to
> flicker,  and  i can reduce the Rf gain just slightly ( not much) to dip the
> S meter.
> just the joys of living in a big city,  powerline, and wireless headphones
> on 6 meters
>
> Ed   K7WIA
>


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