[DSP-10] still no PLL locks

[kd7ts]

The data sheet does mention that TTL and direct CMOS are common 
applications to drive the '1501, however.... they also mention that 
the input pin has it's own internal bias and they recommend A.C. coupling.

They show 51 ohms shunting the input cable then .01 uF in series to 
the osc pin in one example.

It is not uncommon to find oscillators that have DC paths in their 
output path. Maybe this would be worth checking.

Mike KD7TS