[R-390] Second LO and bad xtals

[Alan Victor]

In an earlier post I noted a bad 9 MHz crystal, off frequency by as much as
15 kHz at injection. Indeed, I found 4 other bad crystals for the 10, 6, 17
and 23 MHz band. In all cases 13-15 KHz error. The net of this, if you see
issues in obtaining PTO end points as well sensitivity, check those
crystals in the second LO sub chassis. Either the heater or some
significant vibration over the years took a number of these units out.