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WTU-4800 UHF Wireless Tuner Unit


The TOA Wireless Tuner Module WTU-4800 is a PLL-synthesizer controlled double superheterodyne diversity tuner module designed to be used in conjunction with UHF wireless equipment. It employs a compressor-expander system noise reduction circuit to minimize the influence of ambient RF noise.

(*1) 0 dB = 1 V
Power Requirement 7 - 12 V DC
Current Consumption 100 mA
Receiving Frequency 576 - 865 MHz (*2), UHF
Receiving System Double super-heterodyne
Receiving Sensitivity 80 dB or more, Signal to Noise Ratio (20 dBμV input, 40 kHz deviation)
Antenna Input Impedance 75 Ω
Diversity System Space diversity
Channel Selectable 16 channels
Squelch System Noise SQ
Squelch Sensitivity 17 dBμV
Output 0 dB (*1) (maximum deviation, 2.2 kΩ load)
Harmonic Distortion 1% or less
Frequency Response 100 Hz - 12 kHz, ±3 dB
Operating Temperature -10 ℃ to +50 ℃ (14 F゜ to 122 F゜)
Operating Humidity 30 % to 85 %RH (no condensation)
Finish Surface-treated steel plate
Dimensions 60 (W) × 25 (H) × 139 (D) mm (2.36" × 0.98" × 5.47")
Weight 130 g (0.29 lb)
Accessory Driver for channel changing……1
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