Description:   UV Dual Band 100W Mobile Ham Car Radio Antenna Diamond Antenna SGM507 144\/430MHz   Specification:   1. Radiation: Omni 2. Model: SG-M507 3. Interface Type: M-P 4. Polarization: Vertical 5. Impedance: 50 ohms 6. Max Power: 100Watt 7. Length: 74.5cm (cm) 8. Gain: 2.15dbi (144Mhz) 5. 5dbi (430Mhz) 9. Resistance into power: 70W (watts) 10. The use frequency: 144\/430Mhz the receiver \/ transmitter           Package includes:    1 x Antenna 1 x Wrench   Details pictures: