[Elecraft] K3 Sub RX stopped working on 20/17 meters

[Don Wilhelm]

Chris,

Which filters are enabled for what modes?  You can check with K3 Utility.
It would simplify things a bit if you moved the SUB RX filter by one 
slot (leaving FL1 empty).
Then change the filter configuration to match using either K3 Utility or 
by hand in the menu.

The thing that is really important is that you enable the filters for 
the intended modes.

The display of FL1-FL5 normally refers to the main RX.  Use BSET to 
display the filter for the subRX.

73,
Don W3FPR

On 3/13/2018 11:08 AM, Chris Hallinan wrote:
> Hmmm.
> Just made a new discovery.
> I can get the Sub RX to work on FL2 and FL3, but not FL1 nor FL4.
> 
> Here is my filter configuration:
> 
> FILTER   Main RX   SUB RX
> FL1       13KHz    2.7KHz
> FL2       2.7      1.8
> FL3       1.8      500Hz
> FL4       500Hz    250
> FL5       250Hz
> 
> First of, shouldn't these match for proper diversity receive?  ie same
> filter bw in corresponding slots?
> 
> Second, the SubRX *WORKS* again on 20m with FL2 or FL3 selected, but not
> FL1 nor FL4.
>