[time-nuts] Alternate frequency sources - second opinions

[paul swed]

Well we are looking at alternates these days and indeed the tv signal ain't
what it used to be. Though even though network blackburst was cesium derived
local station butchered it..
But the good news is this the new dtv indeed does contain some pretty good
clocks and in theory things like the pcr might be used. I have a dtv stb
exactly to explore that possibility. You know the coupon boxes at walmart.
But have a bunch of current distractions in line before I hack into that
project.
Regards

On Sun, Nov 22, 2009 at 5:39 PM, Hal Murray <hmurray at megapathdsl.net> wrote:

>
> Hockey puck (or mouse) type GPS receivers are available for under $100.
>
> What can I get in that price range that doesn't depend on GPS?  I'm
> interested in millisecond accuracy as well as nanosecond.
>
> Has anybody built a WWVB-DO?  (Time to dust off my WWVB toys.)
>
> Is there some good WWV setup?
>
>
> Somebody mentioned TV and radio stations recently.  (I think it was part of
> the North discussion.)
>
> What sort of frequency source is at the root of the local TV or radio
> stations?
>
> Is the sync timing for TV stations derived from the same source as the
> carrier?  Or are there two separate clocks to discuss?  How about the
> color-burst frequency?
>
> What do radio/TV stations do for backups?  If there was a hurricane or
> earthquake that broke the main transmitter are they likely to switch to a
> backup with a different timing source?
>
>
> --
> These are my opinions, not necessarily my employer's.  I hate spam.
>
>
>
>
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