Product Peripheral System F90 Summary Parameter Related accessories Download Center Overview Summary Parameter Related accessories Download Center Positive Back Side F90 radio-frequency region635.05-695.05MHzAvailable bandwidth30MHz per channel (60MHz in total)modulation systemFM frequency modulationNumber of channelsAutomatic infrared frequency matching 200 channelusage temperatureMINUS 18 degrees Celsius to 50 degrees Celsiusthrow45KHzDynamic range>110dBaudio response60Hz-18KHzComprehensive signal-to-noise ratio>105dBComprehensive distortion<0.5% discover All/div> Need more information? Go to the document center to view Document Center System specificationRadio frequency range: 635.05-695.05MHzAvailable bandwidth: 30MHz per channel (60MHz in total)Modulation mode: FM frequency modulationNumber of channels: 200 channels for infrared automatic frequency matching.Usage temperature: minus 18 degrees Celsius to 50 degrees Celsius.Offset: 45KHzDynamic range: > 110dBAudio response: 60Hz-18KHzComprehensive SNR: > 105dBComprehensive distortion: < 0.5%receiving machineReceiving mode: secondary frequency conversion superheterodyneOscillating mode: PLL phase-locked loopIntermediate frequency: first intermediate frequency: 110MHz, second intermediate frequency: 10.7MHzAntenna: TNC blockDisplay mode: LCDSensitivity: -100dBm(40dB S/N)Spurious suppression: > 80dBOutput: Unbalanced:+4db (1.25v)/5kωBalance: +10dB(1.5V)/600ΩPower supply: DC12VElectricity supply: 250mAsenderOscillating mode: PLL phase-locked loopOutput power: 3dBm-10dBm(LO/HI conversion)Battery: 2 "1.5V5" batteriesCurrent: < 100mA(HF),<80mA(LF)Service time (alkaline battery): about 8 hours at high power and about 12 hours at low power. Go to document center