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SPECIFICATIONS
RF Carrier Frequency Range
662-692 MHz
Working Range
U1, U2: 152.4 m, minimum, under typical conditions; 487.6 m line of sight
NOTE: Actual working range depends on RF signal absorption, reflection and interference
Audio Frequency Response
50 to 15,000 Hz, ±2 dB. NOTE: Overall system frequency response depends on the micro-
phone element
Gain Adjustment Range
U1: 0 to 40 dB
U2: 0 to 26 dB
Modulation
±45 kHz deviation compressor-expander system with pre-and de-emphasis
RF Power Output
U1, U2: 10 mW maximum
Dynamic Range
>110 dB, A-weighted
RF Sensitivity (Typical)
Image Rejection
100 dB typical
Spurious Rejection
75 dB typical
Ultimate Quieting (ref. 45 kHz deviation)
>100 dB, A-weighted
Audio Polarity
Positive pressure on microphone diaphragm (or positive voltage applied to tip of WA302 phone
plug) produces positive voltage on pin 2 with respect to pin 3 of low impedance output and the
tip of the high impedance 1/4-inch output
System Distortion (ref. ±45 kHz deviation, 1 kHz modulation)
<0.3% Total Harmonic Distortion typical
Power Requirements
U1, U2: Two (2) 1.5V AA alkaline batteries recommended; Nicad batteries optional
U4: 90 to 230 Vac, 50/60 Hz
Power Consumption:
U4S: 9.6 W min., 13.2 W max.
U4D: 12 W min.,16 W max.
UA845US: 15 W min. per unit typical, 62 W max. when used with 4 UC4's and 4 UA830WB line
amplifiers.
Battery Life (Typical)
U1, U2: 12 hours (1.5V AA alkaline battery)
U4S U4D
-110 dBm
12 dB SINAD
-107 dBm
12 dB SINAD
-105 dBm
30 dB SINAD
-102 dBm
30 dB SINAD