I don’t know much about electronics so the phrasing probably isn’t right, but essentially I have a key fob for getting into my apartment complex. I have a read/write device that worked in my previous complex but doesn’t work for my new one, I guess it’s a different frequency. How would I figure out what frequency it’s at so I can find a tool to duplicate it for me to an empty fob like with the old one? The complex won’t give me a second one so I have to make my own.
Also is it possible to do the same for a transponder/gate clicker? Like does a device exist that cycles through a bunch of frequencies until it reacts to whatever one the transponder is emitting and then tell you that frequency?
I’ve tried Google for this but I don’t think I know the right terminology to bring up the results I want.