Hello: Looks like I am not the only one to have this problem. Just finished assembly phase 2(?) on the K2. It was during the BFO tests that I realized there was not enough signal at the test point for the internal counter. I checked for poor solder, improper varactor diode install, verified that L33 was intact and not being shorted by the 5 meg resistor, etc. I ran one crystal at a time, but neither one would provide the proper signal level alone. I even checked L33 on the inductance meter and it came out to about 39uH, which seems about right. I assume the inductance meter has some error. The resistor measures out to about 5 meg.
Anyway, with the test pojnt NOT active, I get about 385 mV at pin 6 of the NE602. in counter mode, that drops into the 250 mV range and I get about 25 mV at the test point. When i use the band up/down buttons to check BFO range, it drops to around 10 mV at either end. I even tried some other crystals (4.915, 5.242, 9.000, etc.) I had laying around to see what happened. Same low signal levels. I hate to shotgun, but I have already replaced the 602 and J-310 since I have tons in the parts pins. Any ideas? Anthony n3kcb ______________________________________________________________ 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]
