Metz Manta AIS marine antenna. Used as an emergency Back-up. Stainless Steel 17-7ph Whip. Stainless Steel Housing. Nickel Plated Brass Whip Post. UV resistant cap (Red). All connections soldered. Compression Whip retainer. 8 oz total weight. SO-239 Connector. Lifetime Warranty on antenna coil (Proof of purchase required, non-transferrable). Stainless Steel Mounting Bracket. Technical Specifications: Power output up to 250 watts. Frequency Range: Pre-tuned at factory to 162 MHz. Whip length 32 inches. No Ground Plane needed.