[R-390] WWV Time
george stringe
egnirts at comcast.net
Thu Dec 4 15:42:04 EST 2008
With all due respects guys, and I appreciate your input but this really
was not an exercise in how to best measure frequency. Even if I am only
40 miles from the WWV transmitter, I realize it is not perfect, it was
just an exercise for all those who have professed a love for the slide
rule....and as such, the responses are slim so far ;-) If I am 5 Hz off
in 2.5 million, my calculator says that is .000002 percent. That can't
be correct can it?
george
WG0S
Gord Hayward wrote:
>> Using WWV to ascertain the generator accuracy percentage is VERY
>> problematic.
>
>
> It is - the path length is important for absolute time, then there's
> the variance of the reflection height.
> That gives a variable path length as well as a Doppler shift with the
> motion. WWVB is better.
> Cheers, Gord.
>
More information about the R-390
mailing list