[Elecraft] Yet another KX-1 Question

[Ron D'Eau Claire]

Glen, NK1N wrote:
  I agree on the receiver sensitivity.  I aligned my 2 band KX-1 with a -103
dBm signal.  When I used a -73 dBm signal (standard S9), I got 4-5 bars on
the S-meter for 40 and 20.  Perfect!
   
  After building and installing the KXB3080 and doing all the RX alignments,
I find the -73 dBm signal barely lights 2 bars on 20.  Hmmm.

  I expect the KX1 20m circuitry was compromised to pull it down to 80m.

-------------------------------------

Just the opposite Glen. 

The receiver front end circuitry was redesigned to operate very efficiently
across the 80-20 meter range. The original KXB3080 uses a simple
capacitively-coupled input circuit. The KXB3080 mod replaces this with a
transfomer-coupled input. 

I wouldn't suggest how effective looking at the "S-Meter" is for evaluating
receiver performance. I haven't tried it. Running actual SN+N/N sensitivity
tests, I found the end result was actually slightly *better* receiver
performance on all four bands.

Ron AC7AC