[Elecraft] K2 #4764 has beaten them all

[Karsten Eppert (DK4AS)]

In a class for novice licensees I tried to demonstrate, what 
intermodulation is and what the consequences are. We had two signal 
generators operating on frequencies that were 5 khz apart and fed those 
signals to various transceivers of different make. The signal strength 
was varied between S9 and S9 plus 40 on the S-meter-reading. That was 
all - not scientifically at all. Then we tuned the subjects in tests up 
and down and identified the unwanted "ghost"-signals. The results were 
between absolutely disappointing with Ghost-signals almost as strong as 
the injected signals up to acceptable, where ghost-signals still 
generated S-meter readings. The best rig in that test by far was my K2, 
which remained almost unaffected even hat the highest selected signal 
strenght.

Reading tests or test figures is nice, but seeing the effects in own 
experiments is much more convincing. I?m glad we did that.

73

Karsten
DK4AS