his refers to a 1.2-meter VHF (Very High Frequency) whip antenna, designed for marine or communication use, typically operating in the VHF frequency range. The 150M-W2VN model is a specific type of antenna known for its reliability in transmitting and receiving VHF signals. The "W/Fixing" indicates that the antenna comes with a fixing or mounting system, allowing it to be securely installed on a boat, vehicle, or other platforms. The model number (000-113-498) is likely a product code for identification and ordering purposes.