Matt, My reason for asserting that the VCO is not oscillating is two-fold. One, there is no frequency at TP1 when I touch it with the probe, but there is when I touch TP2 and TP3. Both of these test points show a correct oscillation of 4.9MHz and 12.09MHz respectively. Second, when I applied my voltmeter to R30 and tried turn the slug for L30 there was no change in the voltage at R30. I will recheck both of these assertions.
I looked over my notes for Q17 and realized that I had them mis-labeled when I wrote the first email in this chain. Looking at the notes I have with me the labeling is S: 0V, G: 7.14V, and D: 0.08V. I will of course check these again when I go back to work on the radio as well as the part types, though I'm fairly certain they are correct. I'm taking the night off though. Also, I did check U3 and U4 over several times and recall them being in the correct orientation. Will look again here as well. The action plan for tomorrow is to double check all components in the VCO for correct value and orientation and then to re-heat the solder joints on them. Hopefully it will be something simple and stupid like a misplaced part or a cold joint. Thanks, Joseph -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-VCO-Not-Oscillating-tp7588086p7588251.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
