RoyB wrote:
...The new HDTV signal all operate on HIGH VHF and UHF frequencies and you have to be pretty zero'ed in on them before picking them up in your TV digital scan...Roy Ken
actually the frequencies used by television stations have not changed a bit. what has changed in many cases is the individual station frequency assignment. many, maybe even most, stations that had a frequency assignment in the VHF portion of the band (channels 2-13) now are transmitting in the UHF portion of the band (channel 14 and up). you can't tell the station frequency assignment by channel number anymore since the FCC allowed those stations that relocated to a UHF frequency to retain their VHF identity. for example, NBC channel 5 here in Chicago used to transmit their video on the frequency assigned to VHF channel 5 (as did every station in the country that was on channel 5). these days NBC 5 in Chicago is now transmitting on UHF channel 29 even though it still calls itself channel 5.
everything else being equal a UHF signal will generally not propagate as far as a VHF signal. add to that is where our RVs are generally parked...out in the boonies amongst trees, mountains, etc. generally farther away from the transmit sites. throw in relatively low (in terms of height above terrain) directional receiving antennas and the result are difficult to receive signals. like many folks using the winegard batwing we added the winegard wingman UHF add-on. that helps draw in more UHF signal to the amplifier.
when we set up I will scan a second time with the antenna at a 90-degree angle to the first scan if the first scan doesn't produce a good result. whatever method works for you.
Rich
Ham Radio, Sport Pilot, Retired 9-1-1 Call Center Administrator
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