Product Description: 1. Stretched Length: 42 cm / 16.53 inches ( 8 sections ) 2. Shortened to: 13.3 cm / 5.24 inches 3. Frequency Range: 144 / 430MHz 4. Gain: 2.15 DBI 5. Input Impedance: 50 ohms 6. Maximum Power: 10 W 7. VSWR: 1.5 or less