Hi Kevin - I have a spare I can send you. I responded direct to your email
but no reply.
Merv VK6BMT
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I also located a couple of units in my inventory. But U 7 is not critical,
it was at the time an elegant way to perform two functions. Now that it is
not readily available the fix is to use a 6 MHz resonator between pin 9 and
10 on the PIC. 6 MHz is not critical for the over all function