The RF-398-01 Low Profile Vehicular VHF Antenna is a broadband (30 to 90 MHz), vertically polarized, end-fed monopole antenna designed for applications where short antenna length or antenna concealment is important. Operating over the 30 to 90 MHz frequency range, the internal matching network maintains a VSWR of less than 3.5:1 without a tuner or band switching. The RF-398-01 is a low-profile EMP protected, vehicular antenna. The feed-through spring mounts directly to a RF-292 Universal Antenna Mount. Order the RF-292 separately for vehicular mounting.