Frequency Range 446.00625 - 446.09375MHz (HX446L) Channels 16 Channels Channel Spacing 12.5 kHz / 25 kHz Communication Method Simplex / semi duplex Antenna Impedance 50 ohm Antenna Whip / stubby Battery Type 1800 mAh Li-Ion battery pack Power Supply Voltage 7.4V DC Current Drain (nominal) TBA Duty Cycle (5/5/90) TBA Microphone Internal condenser microphone Operating Temperature -20° to +55° Size (mm) 61(W) x 100(H) x 31(D) Weight 274g with battery and aerial Power Output 0.5W Modulation 8K0F3E/16K0F3E Oscillator Method PLL Frequency Stability ±0.00025% (±2PPM) Maximum Deviation ±2.5 kHz(Narrow)/ ±5 kHz(Wide) Audio Distortion 5% (1 kHz 60%) Spurious Emission -68 [dBc] Hum & Noise -40 [dB] Receiver Type Double Super Heterodyne type Sensitivity -0.25uV (12dB SINAD) Frequency Stability ±0.00025%(±2PPM) Spurious Rejection -60 dB Adjacent Channel Selectivity -60 dB (Narrow) , -70 dB (Wide) Distortion 3% Typical Hum & Noise -40 dB Audio Output 1W Speaker Size 38 mm