Just got a multiplex 707 (profi car) transmiter for free !! Came with owners manual & 1 crystel in rf modual. The problem is can't seem to find no info this transmiter. Need to find a reciever & crystlal's. Seem's like a nice transmiter like to use it. Anyone know anything about this transmiter , a link to get crystal's & reciever. NO website or anything in owners manual tried searching for info and came up with a blank. Any help would be great !!!!! Thanks.