General Frequency range VHF:136-174MHz UHF:350-390 MHz UHF:400-470 MHz Total number of channels 32 Number of zones 2 Channel spacing 12.5KHz Operating voltage DC 7.5V(±20%) Batterycapacity 1700mAh Average battery operating time (5/5/90) Digital 22 hours (with GPS disabled) Analog 14 hours (with GPS disabled) Frequency stability ±1.5ppm Antenna impedance 50 ohm Dimension 60(L)*39(W)*103(H) mm Weight 291g (including battery pack) Transmitter Output power UHF high power: 5 W UHF low[...]