Abstract: A quick release security latch device for a radio antenna base particularly adapted to releasably lock a base for a citizen's band radio antenna on a supporting member such as a trunk lid lip of an automobile and the like. The latch device includes a clamping loop connectible with the antenna base, a tension lever engageable wtih the clamping loop, and a bracket for mounting the tension lever on the supporting structure. The tension lever is movable between a first release position at which the clamping loop is disengageable from the tension lever for release of the antenna base from the supporting structure and a second position at which the clamping loop is tightly held to lock the antenna base on the supporting structure.