When the outside air temperature drops below freezing, I see some channels’ signal drop.
I expected this for channels such as 2, 7, and 4 since they are far away and according to TV Fool are in the same compas direction. And at least one is a “bounce” channel - bouncing off atmosphere layers to reach me.
What surprised me is a local channel - CFTO 9.1 - is also failing!
CFTO is a VHF channel, thus at this frequency it does not travel as far as many other UHF channels. As well, many antennas are UHF only, and just because they are big enough you get the hi-VHF channels. This could likely explain your issues with the channel.
What is the difference between VHF and UHF signal?
These are two different frequency ranges: VHF (Very High Frequency) and UHF (Ultra High Frequency). VHF channels are further broken down by “low-band” VHF (channels 2-6) and “high-band” VHF (channels 7-13). UHF channels are 14-69. VHF requires a larger antenna than UHF.
I’m going to try the Winegard HDA-200 Distribution AmplifierTheUser86 found useful. Just ordered it on e-bay from BC, should be here in a few days.
My current antenna is only mounted on my roof using a J-Pipe left over from my Satellite days. So I may wind up getting a 10’ mast installed.
My DigiWave works really well - but - is very directional. There are a few stations North of me I can’t get. If I switch to the same antenna you have, or the 8-bay version, I should be able to get around that. Something to think about this summer. Or even a rotor perhaps…
I also lose a couple of stations on fairly regular basis but for me they are Ch2 Buffalo and Ch57 in Toronto. I haven’t been able to pin it down to the weather though.
I am located in SW Scarborough close to the Bluffs and for me the CN Tower and Ch2 broadcast towers are almost 90 degrees apart so I aimed my 4221HD about halfway between them. I used to have trouble with some other channels as well but since installing a Channel Master CM-7778 Pre-Amp everything is pretty reliable except for 2 & 57.
And if it’s cold and moist, and the transmitter site is not well maintained, or properly funded, very likely there will be icing on the antenna, which means the transmitter power gets turned down and you receive less signal to your Tablo, Poof Magic, it might not be your antenna at all Been there done that, hoped to always time turing on the heaters before icing starts.