[Elecraft] K3 deaf on 6m comparing to a FCDP+ ?

[DK5EW]

Hi everybody,
since I own a FunVubeDonglePro+  I think my K3 is a bit deaf comparing 
those 2 rigs on same antenna.
Even with switched on preamp on the K3 it's sensitivity is worse  to the 
FCDP+
I only heard about that the K3 is deaf on 6m but never had a comparison.
Is there a fix to make the K3 hearing better on 6m ?

-- 
best regards
Erwin/DK5EW

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