[Elecraft] K3 2-tone IMD test.

[Alexander Ponomarenko]

Today we finished our K3 IMD-test in our home-laboratory. :)
We has the nice results I think.
Same improvements we have after modifications in hardware (mods for 1st 
and 2nd Mixer, IF-buffer and AF-amplifier).
Same improvements we have after excellent software "AGC-mods" from Lyle 
Johnson.
And here is the nice result in total.

2-tone-IMD-Plot for K3/100F BEFORE mods:
http://forum.cqham.ru/download.php?id=48688
here we can see very dirty and nonlinear signal

Plot for K3/100F AFTER hardware mods:
http://forum.cqham.ru/download.php?id=48689
more clean and linear signal

Plot for K3/100F AFTER hardware mods AND new AGC:
http://forum.cqham.ru/download.php?id=48677
and nice result in total.

GL! 73!
Alex UR5LAM