On 05/21/2011 03:56 PM, Jim Lux wrote:
On 5/20/11 11:51 PM, cook michael wrote:
Le 21/05/2011 08:30, Robert Darlington a écrit :
Guys, I gotta ask, what does this have to do with time keeping? Am I
missing something?
-Bob
I know what you mean. I was desperately fighting down the urge to reply
to Lamar's post to query the significance of cows and horses.
On Fri, May 20, 2011 at 9:59 PM,<[email protected]> wrote:
there *is* a sort of tangential connection. One of the more interesting
strategies in broadcasting these days is forming coverage areas with
arrays of geographically dispersed transmitters, all synchronized well
enough that the signals received from all transmitters are appropriately
synced.
I think this is being done with DVB-T in europe, maybe someone will
comment?
It is. The DVB-T SFN mode is a nice thing. Being used in several countries.
In any case, it requires a fairly decent synchronization to make this
work at UHF frequencies.
Weeell. not too serious. Manageable I'd say. Consider that the COFDM
method has a gap between symbols essentially allowing for reflections to
"ring out" and part of this gap is used to handle transmitters
time-errors. It works well in reality.
Cheers,
Magnus
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