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

[Don Wilhelm]

Mike,

If you do not find the solution re-flowing the solder on the RF board 
filter area, the problem source may be on the KSB2 board in the 
switching diodes and/or resistors at the filter end of that board, so 
for completeness, reflow those connections as well.

73,
Don W3FPR

On 6/2/2012 4:24 PM, VK1OO wrote:
> Don,
>
> The effect happens when the antenna is disconnected as well as when
> connected.
> And in SBB and CW
>
> SSB Filter Widths
> X1 = OP1
> X2 = 2.4
> X3 = 2.1
> X4 = 1.8
>
> CW Filter Widths
> X1 = OP1
> X2 = 0.7
> X3 = 0.4
> X4 = 0.1
>
> I assume something is going wrong in the 4.915MHz Variable Bandwidth
> Crystal Filter.
>
>