[time-nuts] HP-117A

[J. Forster]

When WWVB changed to BPSK, the phase-tracking receivers were rendered
inoperative.

Paul Swed has a tested design for a Costas Loop receiver front end and
demod that properly tracks the BPSK carrier phase and routes it to a 117A
or similar receiver.

There are also some hacks that, knowing the time, invert the WWVB signal
phase, in sync with the data, but no product that I know of.

-John

===============



> Are there any tricks to getting a HP 117A to lock to the current WWVB
> transmissions.
> I have read the thread for the Spectracom receivers.
> Will this work with the 117A?
>
> Thanks
> 73
> Glenn
> WB4UIV
>
>
>
>
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