Posted by Texasmark1 on January 16, 2021 at 07:00:26 from (184.63.33.153):
In Reply to: Re: Best TV antenna posted by moresmoke on January 16, 2021 at 05:20:10:
Yagi is good but "Log Periodic" is better. Difference is that each element serves 3 purposes, not like a Yagi, i.e. having a director in front of the receiving dipole pulling in the signal, the dipole picking up the signal, and a reflector behind the dipole to reflect signal content. Course a Yagi beats a simple dipole which has no directors nor reflectors.
The elements are wired together in an X pattern alternating from side to side. Some are rated at 175 miles but lot of variables there. Also you need dual band for VHF and UHF station base frequencies. The other thing for long range is to get above potential attenuation elements like trees and hills.
Then some antennas have a pre-amp up at the elements....best type but coax (low loss foam filled type best cable) has to supply power up the pole and bring signal down the pole unlike a pre-amp in the house where the coax enters...or close to it. dB gain in the antenna mounted type is much better due to no cable loss getting from the receiving elements to the receiver in the TV.
For multiple stations in different directions a rotator is necessary and is usually mounted up immediately under the antenna array.
Digital signals are picky in that you will bet boxes of part of the signal...off and on information across the screen on weak signals whereas the old analog receiving systems still had the full picture, just full of "snow".....system "noise" competing with a small signal.
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