System metrics

RF range: 640.25 --690.00MHz (A channel: 640.25MHZ---665.25MHZ, B channel: 665.50MHZ---690.00MHZ)

Available bandwidth: 25MHz per channel

Modulation method: FM frequency modulation

Number of channels: 200 channels of infrared automatic frequency matching

Operating temperature: minus 18 degrees Celsius to 50 degrees Celsius

Squelch method: automatic noise detection and digital ID code squelch

Offset: 45KHz

Dynamic range:>110dB

Audio Response: 60Hz-18KHz

Comprehensive signal-to-noise ratio:>105dB

Overall distortion: <0.5%

Receiver Specifications:

Receiving mode: double frequency conversion super heterodyne, double tuning true diversity reception

Oscillation mode: PLL phase locked loop

IF frequency: 1st IF: 110MHz, 2nd IF: 10.7MHz

Antenna interface: TNC socket

Display mode: LCD

Sensitivity: -100dBm (40dB S/N)

Spurious Suppression:>80dB

Audio output: Unbalanced: +4dB(1.25V)/5KΩ

Balance: +10dB(1.5V)/600Ω

Supply voltage: DC12V

Supply current: 450mA

Transmitter Specifications: (908 Transmitter)

Oscillation mode: PLL phase locked loop

Output power: 3dBm-10dBm (LO/HI conversion)

Battery: 2 "1.5V No. 5" batteries

Current:<100mA(HF),<80mA(LF)

Use time (alkaline battery): about 8 hours at high power