[Elecraft] KIO2 Malfunction

2009-12-24 Thread KT4G
Hello all, I'm having problems with my KIO2. The unit was functioning normally until recently, then suddenly failed to connect to my PC. I pulled the unit, set the rig to the settings recommended in the manual, and measured the following voltages: U1: All voltages within normal range EXCEPT:

Re: [Elecraft] KIO2 Malfunction

2009-12-24 Thread Don Wilhelm
Larry, First remove any connector from the DB9 that may be plugged in and re-check the voltage at U1 pin 8. You should not assume that U1 is the culprit (but it may be). Even though the DC voltages at Q1 may be OK, it could be producing less oscillation than normal because of a faulty