[Elecraft] K3: Hears stations twice

[DM4iM]

Elecrafters,
i tune across 80m and hear UN8GV calling cq on 3514.5 loud and clear.
As I tune further down i hear UN8GV deep in the noise exactly 3 khz 
below, on 3511.5. Bad TX, i think.

But wait ... someone is calling him. After a few minutes, a few stations 
create a pileup. I can hear each and every station deep in
the noise on 3511.5 and loud and clear on 3514.5 .
No matter if i use the Main RX only or the Main and SUB.

Huh?

I tried to duplicate this on different frequencies, with different 
stations, but no "luck".

Anyone has experienced this?



A merry christmas to all

-- 

73,
Martin DM4iM