Specifications

1.2 SPECIFICATIONS
Nominal Range: 200 m to 3000 m
Note: Environmental variability such as that caused
by biological noise and interference, thermoclines,
etc., can reduce range.
Acoustic Output Power: 70 watts PEP (peak envelope power) on Channel
B
Audio Frequency Response: 300–4000 Hz
Receiver Sensitivity: –110 dBv
Automatic Gain Control: 120 dB dynamic range
Adjustment Controls: 2-turn level controls located on the upper housing
(must remove lower battery compartment)
Adjustment Tool: Small jeweler-type, athead screwdriver used to
adjust 2-turn level controls
Transmitter Activation: Voice-operated transmitter (VOX) or manual
activation (PTT)
Frequencies: Channel A: 25 KHz upper sideband (USB)
Channel B: F2 (special frequency)
Battery Life: Assuming 10% transmit time: 4 hours on high-power
channel (B, the F2 frequency) or 8 hours on low-
power channel (A)
Battery Type: RB-14 NiMH battery pack, 12 V at 2 amp-hours.
Includes spring contact pad
Low-Battery Indication: Blinking red LED on upper housing and beep in
earphone
Transducer: Piezoelectric Broadband Helmholtz Resonator
Earphone: Ceramic type (standard on most FFMs)
Maximum Depth: 300 FSW (transceiver); ear-mic assemblies may
affect operating depth
Operating Temperature: 0° celsius to 60° celsius (32° F to 140° F)
Storage Temperature: –10° celsius to 60° celsius (14° F to 140° F)
Connector Type: Hi-Use
®
Housing: Injection-molded, high-impact, glass-lled ABS
plastic
Housing Dimensions: Height: 8.63”, Width: 3.55”, Depth: 1.80”
RCS-3U-HIU Battery 90–264 VAC, 50–60 Hz input; 14.7 VDC output;
Charger: charging current 800 mA
2