There are different options for the oscillator xtal IIRC, 'ovenised' (opt 1?) or not and either 5 or 10MHz - so one empty socket may be ok if there is a crystal somewhere else I guess!
Good hunting!
Adrian
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On 3/29/2018 8:17 PM, tmillermdems wrote:
Looks like a crystal socket to the right of the variable capacitor. Maybe a 1 MHz reference crystal?
