[Elecraft] My problem with K2

[Vincenzo Calandra]

Hi all,

I have build KX1 and K1 with no problem but with my (sn. 6871) K2 i'm in
trouble.

No problem with control board and front panel.

I've performed the test of part II:

4 Mhz Oscillator calibration is ok.

PLL reference oscillator range test is ok (Fup = 12099 Mhz - Fdown =
12086 Mhz - range 13 kHz)

VCO test = 7834 Mhz (???)

VCO alignment = no 6V at left of R30! Only 0.018V... and non change
adjusting L30. :-(

I rewind T5 and verified "RP3" (PLL upgrade kit) with non change.

Any one can suggest anything?

Many tanks in advance for al reply!




Vincenzo Calandra (vcalandra at libero.it) - IZ5GVP