[Elecraft] Help - K2 Higher Noise Level with X1 Selected

[Don Wilhelm]

Mike,

OK, what I now suspect is that you have developed a fault in the IF 
filter on the RF Board.  My suspicion is that the OP1 filter on the KSB2 
option is working just fine, but all the filters created using the 
variable bandwidth filter have a lesser response than they did.

I would suggest that the most likely cause is a solder connection - yes 
even after several years, so re-flow the solder in the xtal filter area 
adding a bit of additional solder (actually what is needed is a bit of 
flux).  Use a hot iron - 400 degC.

73,
Don W3FPR

On 6/2/2012 4:11 PM, VK1OO wrote:
> Hi Don,
>
> SSB.
> I used your method, some years ago now, to set up the filters.
> The problem has appeared recently, so something has changed.
>
> Mike
>
>