[time-nuts] Spectracom 8170 time clocks simple suggestion

[paul swed]

As I have been working on the d-psk-r its always been clear to me that a
simple non invasive approach to fix the 8170 class clocks existed. Since
the d-psk-r has consumed far more time then I ever would have guessed, I
would like to offer the approach up to the group. Maybe someone else has
some time to do this and it is easy. However with easy there are trade offs
as always.

Here is teh approach
Using a wwvb clock chip like the MSA 8160 still obtainable (And no doubt
others say from an atomic clock)
Take the am time code out.
Feed that to a NE 602, SA602 or 612 series balanced modulator there all the
same as a AM modulator.
The 60Khz comes from a tuning fork crystal using the SA602 built in
oscillator.
Attenuate the output to 100 uv or so. I don't think you really need any
filtering.

There you go. No real magic.
Possible downsides
Drift as the tuning fork crystals are OK. If true use a better source
I expect the tick to be slightly delayed by this method.
Regards
Paul
WB8TSL