Jack,
We traced a thread on the 50kHz issue to the replacement regulator.? For my DE, I had to install an LC filter on the output and a large capacitor on the input to the regulator.? This eliminated the spur.? We found the spur using a spectrum analyzer.
/g/BITX20/message/100192There are over 300 posts about many things, not all just for the spurs.? The bottom line is that the capacitor and lc filter solved it for me.
73
Evan
AC9TU
