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

[Chris Hallinan]

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.

Doesn't seem to matter which filter the Main RX is connected to. I tried
all the combinations for Main on CW: FL2,3,4,5 - SubRX only works on
FL2/3.  Selecting FL1 or FL4 silences the Sub receiver.

Chris


On Tue, Mar 13, 2018 at 8:54 AM, Chris Hallinan <challinan at gmail.com> wrote:

> Well, I have a 20-meter vertical connected directly to the AUX RF input,
> and a receiving loop connected to RX IN.  So unless there is a setting
> somewhere that somehow disconnects the antennas on 20 and 17, it's simply
> not working.
>
> Noone else has replied.  I have placed a call to Elecraft support on this
> one.
>
> Thanks,
>
> 73 de K1AY
> Chris
>
>
> On Mon, Mar 12, 2018 at 9:42 PM, Richard Donner <richarddnnr2 at gmail.com>
> wrote:
>
>> Hi
>>     This is my first help idea.  Perhaps your sub receiver is not
>> connected
>> to an active antenna on 17 and 20 meters.
>> I have done stuff like that  and pulled my hair out until I realized the
>> above.
>> luck
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>
>
>
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Life is like Linux - it never stands still.