Abstract: A mobile radio and electronic equipment security device for preventing the unauthorized removal of said mobile equipment from a vehicle in which it is mounted and installed which includes stainless steel self-threading eyebolts with lock nuts thereon for replacing the conventional mounting screws of the mobile equipment mounting structure and a two-part telescoping U-shaped rod member with each end of the open U-portion terminating in closed eyes. The eye of one of the threaded eyebolts is interengaged with the eye of one of the U-shaped ends while the eye of the other eyebolt is engaged with the remaining end of the telescoping U-shaped rod member by locking structure. In one embodiment of the device an enlarged sleeve portion provided on one part of the U member permits the other part of the U member to telescopically slide therewithin. This permits adjustment for a wide range of sizes of mobile radio and electronic equipment devices.