[Elecraft] Noisy K-3 Receiver

Don Wilhelm w3fpr at embarqmail.com
Thu Dec 17 09:15:20 EST 2009


The other thing that helps (and helps a LOT) is to reduce the RF Gain 
until the band noise is at a lower level - just barely present.  Yes, it 
will likely be different for each band, but can be quickly set by 
listening to a spot with no signals and listen for the "frying noise" to 
be barely perceivable.  Turning on the attenuator is also helpful.  
Right now, I am listening to an 80 meter local roundtable with the 
attenuator on, the RF Gain at 2 o'clock and the AF Gain at 9 o'clock.

For those who are hesitant to do reduce the RF Gain because the S-meter 
changes when the RF Gain is reduced, the K3 has an absolute (ABS) 
setting for the S-meter, and you have an S-meter that is not influenced 
by the RF Gain nor the preamp nor ATT.

73,
Don W3FPR

chen dave wrote:
> My suggestion:
> 1, upgrade to lastest f/w
> 2, tune the center of the passband to 1.4~1.45k(very important)
>
> Hope those will helps!
>
> all the best!
>
> David,BA4RF
>   
>


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