Specifications:  1) Carrier frequency: VHF/UHF  2) FM 3) Channel spacing: 25kHz /12.5kHz  4) Frequency stability: ±5ppm 5) Antenna impedance: 50Ω  6) Power supply: DC 9 - 15V, 13.8V typical 7) Temperature: -20 to + 60°C  8) Dimensions: 106 x 54 x 18mm (antenna port and heat sink excluded)  9) Weight: 150g  Receiver: 1) Modulation deviation: ≤±5.0kHz  2) Receiving sensitivity: ≤0.25μV(12dB SINAD)  3) Clutter and images rejection: 65dB  4) Intermodulation rejection: ≥65dB 5) Audio distortion: ≤3% 6) Audio output: 240± 20mV 7) Standby current: ≤50mA Transmitter: 1) Modulation sensitivity: 100mV±10mV  2) Transmitting current: ≤2A (13.8V/5W) 3) Transmitter startup time: ≤50ms 4) RF power: ≤5W