Dual band cellular. 3dB gain. Collinear phased 1/2 wave elements and dual brass choking sleeves to suppress pattern distortion due to cable radiation. Specially designed for powerboats, this neat and efficient dual-band cellular antenna packs the punch to keep you in touch. Brass and copper elements, stainless steel ferrule with female N connector. Shakespeare 4006 adapter included for standard 1"-14 thread mounts. Includes 25' of Lo-Max low-loss cable and a "TNC" connector. Suggested mount: 4187 ratchet.