Stealth Tuned Low Profile Antenna for VHF is a powerful, compact-sized solution ideal for travel with a caravan or offroad vehicle. This antenna ensures clear communication within a group or caravan. In ultimate transmit distance scenarios, simply switch to the VHF-1/2W-SPR antenna. The super low profile Stealth is only 3.25in tall, perfect for low clearance areas and avoids catching on brush or low branches. It operates with a frequency of 150-158 MHz with a 2 dB Gain. It comes with two versions depending on mounting location: GROUND PLANE version for mounting on metal surfaces like steel or aluminum roofs, and NON-GROUND PLANE version for mounting on non-metallic surfaces or tab mounting on a roll cage, fender, or mirror brackets.