[Elecraft] K2 Part II Alignment Probs

[Mark Bayern]

> Tune to 7000 and put the counter probe into TP1 and tell me what the
> frequency reading is there (in CAL FCTR mode) - 11915 kHz is expected.

7000.00MHz CW, St P of 0.60

at TP1: 11914.18
TP3: 12094.20
TP2: 4913.60

If my math is correct, mixing 7000.00 and 11914.18 should have an
output at 4914.18. Is this the expected value? Is it on the 'correct'
side of the IF filter? (Keep mind that my C22 has not been set, its
just at the midpoint.)

> ... so we would have to look at your
> test setup - is it possible that you are driving a very strong signal into
> the K2 and you are actually hearing both sidebands?

I hear the incorrect sideband when using the filter settings shown on
page 89 of the Rev F manual. I hear both sidebands when using the
filter settings that Gary Surrency sent me.

Yes I was using a strong signal -- the high output from an XG2 with
the preamp still ON. I have now switched to the lower output on the
XG2 and turned the preamp off. Still hearing the wrong sideband.

I guess a wrong IF frequency would explain the problem with tuning the
IF can, but I'm still baffled about how the IF frequency can be wrong.
By the way, I can match the XG2 to the spot tone (do we still call
this zero-beating?) at 7037.60 on the display, but the tone goes down
when I turn the freq dial up towards 7040.