DF RH771 Radio Antennas BNC Dual Band 144/430 MHz Brand new and high quality. Rated power: 10W Reference distance: extend 1.2~1.5 times Frequency bandTX144/430MHz; RX120/150/300/450/900MHZ Gain: 2.15dBi Standing waves: &lt; 1.2 Impedance: 50z ohm Band: double Antenna interface: BNC Fit for: Kenwood: TH-28A/TH-48A/TH-78A, TK100, TK200, TK210, TK220, TK300, TK310, TK320...... Icom: IC-V8, IC-V80, IC-V82 , IC-U82 , IC-W32...... Yaesu / Vertex Standard Marantz: C150/C450/HX260/HX270 Size: 39cm x 1.4cm x 1.4cm - 15.29inch x 0.55inch x 0.55inch