External rfid antenna tp-915 mechanical properties 1. frequency band 902~928 mhz 2. part number tp-915 3. polarization linear 4. v.s.w.r. 1 : 1.5 max 5. impedance 50 ohms ±5ω 6. gain 9 dbi 7. power handling 30w max 8. front to back ratio 20db 9. hpbw horizontal 70° 10. hpbw vertical 70° 11. rated wind 3.0 lbs. (1.4 kg) 12. operating temperature -20°c~60°c parameter description 1. connector type n type female 2. antenna dimensions 263*263*30mm 3. weight 1.82kg 4. radome color white 5. radome