Diamond Original CR320BNMO Triband Mobile Antenna Antenna, Mobile Vertical, NMO mount, Tri-Band, 2m, 1-1/4m, 70cm, Fold-over, 200 W, 37.4 in., Bands: 2m/1-1/4m/70cm Element Phasing: 2m/1/4l/1-1/4m/1/2l/70cm/2-5/8l Mount: NMO For multi-band operation use Diamond's K-Series NMO antenna mounts and MX324 or MX324D triplexer. Not recommended for magnet mount. Grounding required.