Posted by 440roadrunner on June 06, 2009 at 08:44:14 from (98.145.76.31):
In Reply to: O.T. Digital T.V. posted by john *.?-!.* cub owner on June 06, 2009 at 07:26:20:
A few rants and raves about DTV
FIRST THERE IS NO SUCH THING as a "digital" or HD tv antenna. Antennas work the same today as they did when the Titanic sank, that is, if they are designed well, for a set frequency band, etc
SECOND antenna gain claims are, well, QBS. This has been going on for years. You are much better off going with a reputable known brand than worrying about the last dB claims, because they are probably a lie, anyhow.
I"ve been told the big Wienguard 8 bay bowtie, similar to the one posted above, works well
THIRD BE CAREFULL that you do or don't or won't need VHF. That's right, that's what I said--VHF. Many broadcasters are only TEMORARILY operating on UHF, and may, will or have reverted to VHF!!!!! There are several reasons for this, part of which is that they were waiting for other channels to drop so they could step in, etc. VHF transmitters are more efficient, therefore cheaper to operate, and generally VHF gives the broadcaster better area coverage, therefore lower power is needed.
BE SURE to be aware of this. Here in Spokane, my understanding is that the channel "musical chairs" is not over.
NEXT is my rant about signal quality. Remember when the irritating old lady next door was vacuuming right in the middle of your Saturday game? And the analogue TV was popping and producing nice colored snow because of her vacuum? Well guess what, THAT IS STILL AN ISSUE, you just cannot see it, UNTIL......
the signal gets so bad that it simply tiles up, blanks, and freezes!!!!
The point is, that interferance, the same interferance that used to irritate us with analogue TV, is still a factor---it still degrades the signal coming into your converter/ TV, it's just that you don't see it until the signal "just quits."
The same is true of ghosts, do you know what they are? Ghosts are a name for "multipath" meaning reflections, that is the main and a reflected signal gets to the receiver antenna at slightly different times. On old analogue TV's we could SEE the ghost because of the time offset. YOU STILL may have problems with ghosts on DTV--but once again, you can't see the effect until it gets SO bad that the signal freezes up!!!!
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