Will this antenna work with radios other than the GMR2 PLUS?

It is purpose-built for the Rugged Radios GMR2 PLUS handheld and connects through that radio's BNC fitting. It is tuned for GMRS/FRS, so other GMRS handhelds with a BNC connector may physically fit, but Rugged Radios does not list them as supported.

Does it really increase range?

Moving the antenna outside the vehicle and raising it to about 17.5 inches removes the body and roof from the signal path, which is the main gain. Real-world range still depends on terrain, obstructions and the radio's power.

Where can I mount it?

On a large flat metal surface such as a roof, hood or trunk lid, so the magnet holds and the metal acts as a ground plane. Glass, plastic and aluminum bodies give a weak or no grip.

How long is the cable, and will it reach?

The cable is 9.5 feet, enough to run from a roof or hood down to a radio inside most trucks and UTVs. Plan the route so the cable does not pinch in doors or get snagged.

The magnetic mount antenna with its attached cable and BNC connector. The GMR2 PLUS radio is sold separately.

Can I leave it on while driving?

The magnet holds on a flat steel surface, but the 17.5-inch whip flexes and can catch on branches or low clearance. Check the mount and cable before each trip.