[time-nuts] Near-perfect chip for Loran-C frequency receiver
Bruce Griffiths
bruce.griffiths at xtra.co.nz
Fri Jul 4 05:49:28 EDT 2008
Poul-Henning Kamp wrote:
> In message <486DDD7B.1060001 at xtra.co.nz>, Bruce Griffiths writes:
>
>> Poul-Henning Kamp wrote:
>>
>
>
>> You've misunderstood the problem.
>>
>
> No, you have, and you are barking up a different tree than I'm climbing.
>
> Look at the subject, it says "... frequency receiver".
>
>
The meaning diverged/became ambiguous after Magnus made his post.
My comments apply to the extended capability receiver that Magnus
envisaged and not to a Loran only receiver.
>> If one wishes to decode the AM time code broadcast by JJY WWVB, MSF, MST
>> etc then the maximum signal averaging time is relatively short.
>>
>
> I don't so it isn't.
>
>
But locking to a 1uV signal in the presence of a 1V signal within a
relatively broad receiver bandpass as Magnus envisaged is unlikely to be
possible without substantial analog assistance.
> Poul-Henning
>
>
Actual signal levels for MSF, WWVB etc as well as signal levels would be
useful in sorting out the limitations of various approaches to combined
Loran, MSF/WWVB/etc receivers.
Bruce
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