Channel Capacity 136 up to 174MHz (VHF), 350 up to 390,400 up to 470MHz(UHF), Spasi Channel 128*2, Frequency stability +/-2.5ppm, Antenna Impedance 50 ohm, Voltage Operations C 7.2V, Output Power Capacity more or equan than 4W9H) more or equan than 0.5W(L), Modulation mode 16k Fi F3E / 11k Fi F3E