Hello guys,
I installed the KSB2 option this afternoon and found out that I did'nt
have any modulation.
The RX part seems to work although I did not test it completely.
In TX there is no modulation. I checked the microphone (MH2) which
looked OK (except that the screw to lock the inner connector part with
the metal shell was missing).
I started to go for the troubleshooting list. Checked the components
once more, which seems to be placed correctly.
When measuring voltages from the chart, I found a significant difference
at U1-16 (=U2-8) which is 0V instead of 6.0V in RX mode.
I don't have any idea what to do with this. I checked for a short
circuit but it looks like that's not the case.
What to do? any suggestion is welcome.
Evert, PA2KW (K2 #4836)
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