Hi, I was re-adjusting the IF amp peak on my K2, however (and I do remember having an issue at build time) there is no peak in the whole range of the inductor can.
Doing some investigation along with the circuit digram I think I have found my problem. Across pins 1 and 8 of U12 I'm seeing the value of R111, which is about 5k5, but thats also in parallel with the winding of L34, so I'd have expected that to have measured just a few ohms or less. So seems that my issue is an open circuit L34. The only reason I noticed this was because side by side with my more recent K2 its not quite as sensitive. On the plus side it does have a much lower noise floor. So, my question is based around if anything would cause L34 to go open circuit? I cant see anything in the circuit that might have caused excessive current or something similar. All the solder work in that whole area is neat, and I didn't over-do the heat when installing it and the components all appear to be in the correct places. It had worked, as I remember finding the peak at the time I built it, but then suddenly it wouldn't re-peak after that, but at the time I didn't think much more of it. Should I just request L34, or is there something else I may need from others past experiences? thanks in advance, Cameron - AF7DK/GM7LQR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
