Your garage door is likely using a frequency clustered around the 2 4 ghz band that s been designated the ism band otherwise known as the industrial scientific and medical band.
Us garage door frequency.
Johnson founder of overhead doors invented the automatic electric garage door in 1926.
Surprise surprise this is the same signal that is used by garage door openers key car fobs as well as many short range radio applications.
Once revealed this innocent device was transmitting a 315 megahertz radio signal.
Openers have legally operated at that frequency since at least the early 1980s karasek.
Most modern remotes operate on a rolling code type system and dependant on the brand operate on 310 315 and 390 mhz.
Although this device is very useful it was also causing the disrupted frequency.
As the automobile became more popular the garage became a building of its own.
The need for security has brought about most of these changes and as technology improves and changes we are sure more changes will come for garage door openers and remotes.
The garage door opener frequency at issue 390 megahertz has belonged to the military since around 1950.
The garage door opener remote which uses a radio frequency signal to open and close the automatic door brought even more convenience to the automobile owner.