Rust-free stainless steel is employed in major component parts making the antenna rust resistant and durable. Ultra-wideband design 25 to 3000 MHz receive, 50-1200 MHz transmit (6m tunable for transmit). Compact and lightweight design enables antenna to be installed on balcony railing at an apartment or condominium. Ideal for 2m, 1-1/4m, 70cm, 33cm and 23cm amateur bands.Excellent "shop" antenna for testing various transmitters on a single coax. Can be made further compact and lightweight by removing the top loading coil if 25-50 MHz reception is not required. Compatible coaxial cable: 10D-2V or less (cables must be prepared separately). 699814, Utility Model Registration No. Ultra-wideband design from 25 to 3000 MHz. Lightweight and compact design, so it can be installed on the verandas of housing complexes and condominiums. Rust-resistant stainless steel elements are used. Can also be transmitted for amateur bands at 50/144/430/1200MHz and for personal radio. Cone elements are all designed to the same length, so they are completely omnidirectional as discone.