N Female RF Radio Connector - Fits Bird Watt Meter- by W5SWL Brand N Female RF Radio Adapter Connector Teflon Insulator, Silver Plated RF Pin, Nickle Plated Body Impedance: 50 Ohms Fits Bird Watt Meters by W5SWL Brand is Trademarked - Sold only by Dave's Hobby Shop and NO others. These are Communications Connectors - not for Cable TV