[ARC5] Command Set R-13B receiver (108 - 135 Mc)

[Waldo Magnuson]

   Hi, I’m still working on my R-13B. All the tubes check ok on my Hickok 6000A tube tester. The RF oscillator tunes from 91 to 120 MHz which looks good for the 15 MHz IF. The B+ is low (170 volts) from my supply but I’m told that should be ok.
   There seems to be an excessive amount of vibration sensitivity, I tap anywhere and get lots of harmonies noise.  What is usually the cause of that?
   Still no signal through to the output, just “rush” noise.
   Suggestions to check welcome.
Skip Magnuson W7WGM