Wilson Electronics 301104 Dual Band NMO-Mount Cellular Antenna: * Powerful permanent hole-mount cellular antenna * Dual-band 800/1900MHz * Works on all us cellular frequencies * Gain: 4.9 dbi (800MHz) * 5.9 dbi (1900MHz) * When used with optional NMO-style mounts, allows antenna mounting on trunk-lid, roof top or trunk-lip