Our gate opener remote receiver works much better with the antenna horizontal than vertical? By much better, I mean 300' vs 100'. Why?
The distance the remote will operate the gate appears to be independent of time of day, and/or weather conditions.
The antenna is directly connected to the receiver which connects to the gate controller with a 3-wire cable. As best as I can determine the receiver sends remote codes to the controller on one of the 3-wire cable conductors, the other two are for power and common.
Frequency is ~320MHz, and the antenna is ~9” long.
The antenna originally was near vertical, but it sagged under gravity to a more horizontal orientation. I know the antenna will continue to sag and I'm thinking distance will suffer as it becomes more vertical.
I could straighten the antenna to vertical and the range would suffer, I 'know' it is antenna orientation but can't explain it to myself.