[Elecraft] K3 Sensitivity

[jay Miller]

I assembled my K3/100 with the second receiver in December of 2010.  The
weak signal performance was much better than my original IC-756 rig. I did
not install the automatic antenna tuner.  I have continued to download the
software changes since then. 

 

Two years ago I installed the general coverage receiver modification.  I
thought it was my imagination at the time but I thought had experienced a
slight decrease in the primary and secondary receiver sensitivity.

 

Today I put my Kenwood TS-480 that I had been using as a mobile in the
shack.  I was listing to a couple of weak strength SSB QSOs using the K3.
Out of curiosity I switched over to the TS-480 and was surprised that the
weak signals were more "copy-able" on the inexpensive Kenwood than on the
K3.  Does this indicate a problem with the RX in the K3 or is the apparent
difference in the TS-480 RF gain come at the price of the definitely poorer
adjacent signal rejection?