Re: 4G LTE Interference on OTA Antenna TV
Posted: Thu Jun 18, 2020 3:24 pm
Placing these antennas on top of the tallest nearby mountain or hill when there is one is SOP, it definitely improves line of sight for the microwave links and increases range and reduces multi path interference. The height of the mountain has nothing to do with the height of the antenna, that is determined by the signals it must transmit and the power etc.
If the tower were grounded, assuming the tower is the antenna, then the signal would be grounded and the antenna would not work. If the tower were strictly structural, then it probably would be grounded but I don't think the really tall TV antennas fall in that category, likely a cell tower but not UHF/VHF KW power stations. Its basically a huge monopole and one needs a ground plane for that to propagate the signal It does not need to be a big gap, just enough to prevent arcing.
There were multiple large Coax and one big waveguide (maybe ~6x4 inches), at least in my photographic memory, I need to dig to see any photos I may have taken last time I went up there. At least one of the microwave links is likely used to receive the low power signals that get amplified in the shack at the base.
If the tower were grounded, assuming the tower is the antenna, then the signal would be grounded and the antenna would not work. If the tower were strictly structural, then it probably would be grounded but I don't think the really tall TV antennas fall in that category, likely a cell tower but not UHF/VHF KW power stations. Its basically a huge monopole and one needs a ground plane for that to propagate the signal It does not need to be a big gap, just enough to prevent arcing.
There were multiple large Coax and one big waveguide (maybe ~6x4 inches), at least in my photographic memory, I need to dig to see any photos I may have taken last time I went up there. At least one of the microwave links is likely used to receive the low power signals that get amplified in the shack at the base.