LARSEN's OM150CK 144 – 174 MHz base loaded 2.5 dB antenna. No ground plane required. Includes coax connected to coil and connector. Base diameter 2.25 in. This listing is for Each. Color Silver Whip Length 49 in Whip Material Stainless Steel Cable Length 17 ft RF Connectors UHF Male Coaxial Cable Series RG-58 Mobile Antenna Mounting Type Adhesive Qty/ Uom 1 Each Gain dBi 2 dBi Maximum Power 200 W Specific Frequency 144-174 MHz