Owner`s manual
34
General
Power Output 1 watt or 25 watt (user selectable)
Power Requirement 25 watts output: 6A@13.8V DC
Modulation ±5 kHz deviation
Hum and Noise Signal-to-
Noise
45 dB@1 kHz with 3 kHz deviation with 1000 Hz
modulating frequency (nominal)
Audio Distortion Less than 8% with 3 kHz deviation with 1000 Hz
modulating frequency
Spurious Suppression –40 dBm @ Hi, –40 dBm @ Lo
Output Power Stabilization Built-in automatic level control (ALC)
Frequency Range 156 to 158 MHz
Frequency Stability ±10 ppm @ –20°C to + 50°C
Receiver
Frequency Range 156 to 163 MHz
Sensitivity 0.27 μV for 12 dB SINAD (nominal)
Circuit Dual Conversion Super Heterodyne PLL (Crystal for
DSC)
Squelch Sensitivity 0.2 μV Threshold
Spurious Response 75 dB (nominal)
Adjacent Channel Selectivity 70 dB @ ±25 kHz (nominal)
Audio Output Power 2.5 watts (10% Distortion, 8 Ω load)
Power Requirement 360 mA (nominal) @ 13.8V DC at squelched, 920 mA
(nominal) @ 13.8V DC at maximum audio output
IF Frequencies 1st 41.925 MHz, 2nd 455 kHz (1st 21.7 MHz, 2nd 455
kHz for DSC)
#
Channel name/description Used for:
DISTRESS SAFETY AND
CALLING
primarily emergency messages and distress calls
INTERSHIP SAFETY safety messages from one ship to another, or from a
ship to Coast Guard aircraft