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Posted by Stephen on 09/07/07 20:09
On Wed, 5 Sep 2007 14:09:53 -0500, davy <davy.2wgj9v@no.email.invalid>
had a flock of green cheek conures squawk out:
>
>Digital transmissions are usually 'multiplexed'... channels transmitted
>in a group, this usually calls for a wideband antenna, one that can
>receive over a group of channels rather than one designed for a single
>group.
OTA digital tv uses the same frequencies as analog tv.
>
>Digital transmission's are usually of lower power than normal analogue
Some are at lower power to keep from interfering with a nearby analog
channel.
>transmissions, unless the reception is exceptionally good any old
>antenna is not going to work, under these circumstances some channels
>will be received and others won't or picture freezing becomes an issue
>due to lack of signals.
>
>Indoor antennas usually suffers from 'ghosting', due to phase
>differences caused by signal reflections.
OTA digital tv is not affected by ghosting.
>
>All you need is a loss of a single packet of the 'data stream' and
>you've got drop out... just like Sky TV in a heavy rain storm.... or a
>skipping and jumping CD or DVD.
>
I haven't seen that happen here in rainy Florida.
Stephen
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