Don,
I rechecked/reheated RFC14 and R20. The voltages on Q19 are in-line now.
Thanks,
Zac
Don Wilhelm wrote:
Zac,
For the bad voltages on Q19, look carefully for a bad solder connection
on RFC14 (poorly tinned toroid lead perhaps?) and/or R20. The
resistance measurement from Q19 source to ground should be close to 270
ohms. Note that this condition may or may not be related to your HiCur
situation.
As for the HiCur message - is that message present when transmitting
into a dummy load? Does it occur at all power levels? Is this the base
K2 only or does it have the KPA100 installed? Do you have the KAT100
also? If you have the KPA100, has it been updated with the KPA100UPKT -
if updated, was C31 changed to 0.22 uf during the upgrade? Many
questions that I must know before venturing an intelligent comment.
73,
Don W3FPR
Zac Brown wrote:
I'm getting HiCurr messages when I transmit on 40m, the bargraph shows
multiple bars lit, and I can hear a very faint squealing sound coming
from the K2 when I transmit. I've built the RF probe and I'm going
through the signal tracing steps in the manual.
On the PLL Reference Oscillator steps (appendix E, page 10) I am
measuring U4 pin 1 at 0.252 V. The signal tracing instructions say
that it should be 0.8-1.8 vrms. I then started looking at Q19 and am
measuring G=1.0, S=-1.0, D=8.0 with my DMM. According to the DC
voltage tables, I should be seeing G=0, S=0.8, D=8.0.
Any advice on where I should look next?
Thanks,
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