Be careful, a lot of the antennas marketed as "Digital" or "HD" are
actually *less* capable -- some only mention "UHF" in smaller print.
While many VHF stations moved to UHF as part of the transition, many
did not. Some only moved from VHF-lo (2-6) to VHF-Hi (7-13), but a
few markets still VHF-lo stations. So there are a lot of markets that
still require a VHF antenna (including where I am, with channels 9 and
10 still in use, and those are the ones I have the most trouble
receiving with my indoor rabbit ears), and the antenna makers are
lying when they don't point this out on the box.
Yes, but ....
Your standard "old style" TV antenna effectively combined the main signal
with "delayed" versons of the same signal. (The "delay" was on the order
of nano seconds.) Since a lot of the information is a digital signal is is
subtle phase shifts ...
There are "bed spring" UHF antennas which combine signals from several
elements with each element seeing the same phase.
First off, what is wrong with your present antenna? Does it get good
signal now? If it does, you could probably feed another TV with a
splitter and still get decent signal strength. If not, then you should
put in an amp close to the antenna. You won't know until you try.
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