AM series is a of VHF & UHF vehicle whip antennas with compact magnetic mount. Antenna type is a vertical 1/4 λ (VHF & UHF) or 5/8 λ (UHF only) monopole that requires ground plane (vehicle roof or any metal surface) for effective operation.
AM Magnetic mount antenna
xxx band
(x/x) monopole length (wavelength)