[time-nuts] WWVB d-psk-r down conversion method...
csteinmetz at yandex.com
Tue Sep 23 14:06:16 EDT 2014
>The old AM format was happy with cca 200Hz bandwidth to recover the
>time information, which was utilized in many professional receivers,
>which used a crystal filter for 60kHz, for the PSK format the
>required bandwidth is at least five times wider, so crystal filter
>would be problematic and much more costly, the higher required
>bandwidth brings also more noise ....actually where is the advantage
>of the new modulation scheme?
The changes were made to make today's consumer "atomic clocks" more
robust, not to help any kind of "professional" receivers (whether
time or frequency).
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