Will,
For the future, I would think you could bring that fob to a locksmith, or whoever duplicates garage door openers, and they could shoot that signal into a replicator and make a backup. The reason I say this is I have a garage door opener for my car and needed one for my bike, but a much smaller one with no dip switches, and the locksmith transfered the signal to a matchbook size transmitter by doing just that. I could be wrong though. BTW, in an unrelated topic I just found out Streets of Laredo was a sequel to Lonesome Dove as per George Carlin who acted in it and 1923, which is a sequel to 1883, is coming out.