The only variable I can honestly say does occur is the temperature. I changed the antenna to North West, and couldn't believe my ears, it's working.
My antenna is linked to a home dock, neither of which moves in the wee small hours of the morning.
In other words, my system works fine 23.5 hours a day, but, come 0100 AM Eastern time, I can expect to get a garbled and/or silent signal sometime in the coming 120 minutes, which garbled and/or silent signal rarely lasts more than 30 minutes. I'm not plagued by neighbors' kids playing pranks or wild animals exploring, particularly given the time of day.
Not included are channels that are specifically used for live sports programming, as well as former music channels that were merged with a duplicate music channel after the merger.
Little Steven's Underground Garage (Garage rock, rock n' roll, garage rock revival, indie rock, proto-punk, punk rock, surf rock, acid rock, pub rock, glam rock, soul music, funk, roots rock, British Invasion, boogie and blues rock, various others) Most internet channels can be "personalized" through a menu of sliders referring to specific elements which can be adjusted.