Features of 510smart business transceiver with 16 channels 1. 16 channels 2. Emergency alert3. Scan function4. High/Low power selection5. Remote killer6. Busy channel lockout7. Battery save8. Time out timer (TOT)9. Voice guide10. Built in CTCSS and DCS11. VOX function12. Li-Ion Battery13. PC programming14. Output power: 4W/5W15. Channel steps(5K/6.25K/10K/12.5K/25K)16. Wide/narrow bandwidth selectable17. FR: 136-174MHz /400-470 MHz S510 Specifications Frequency range136-174MHz/400-470MHz Channel Capacity16 CH Channel spacing25 / 12.5 KHZ Frequency step5 , 6.25KHZ Filter for first mid-frequency21.4MHZ Filter for second mid-frequency455KHZ OperatingvoltageDC:7.2V BatteryS-10 Li-Ion battery (1300mAH about 12 hours according to 5-5-90) Operatingtemperature-30 degree To + 60 degree Frequency stability± 2.5ppm Antenna impedance50 Ω Dimension52 X 28 X 100mm Weight230g TransmitterReceiver Frequency error≤ 5 X 10 -6reference sensitivity≤ 0.25uV( SINAD: 12dB) RFpower output≤ 5WCommon-channel restraint≥ -8dB Modulation limit≤ 5KHzAdjacent-channel selectivity≥ 55dB Adjacent channel power≥ 65dBSpurious response interference≥ 55dB Spurious RF sponderance≤ 7.5 μ WInter-modulation interference≥ 55dB Modulation characteristicPre-emphasis of each frequency-interval is 6dB(300Hz-3000Hz)Audio responseDe-emphasis of each frequency-interval is 6dB (300Hz-3000Hz)Used bandwidth≤ 16 KHzJam-up≥ 85dB Audio distortion≤ 5%Audio distortion≤ 5% Audio output≥250mW