Icom IC-M503 Specifications And Options, Specifications, General, Transmitter, Receiver

SPECIFICATIONS AND OPTIONS 11

■Specifications

• GENERAL

• Frequency coverage	:
Transmit	156.000–161.450 MHz
Receive	156.000–163.425 MHz
• Mode	: FM (16K0G3E)
• Channel spacing	: 25 kHz
• Current drain (at 13.8 V)	: TX high	6.0 A max.
	Max. audio	1.5 A max.
• Power supply requirement	: 13.8 V DC (10.8 to 15.6 V)
• Frequency stability	: ±10 ppm (–20°C to +60°C)
• Dimensions	: 165(W) ⋅ 110(H) ⋅ 109.4(D) mm
(Projection not included)
• Weight	: 1130 g

• TRANSMITTER

• Output power	: 25 W and 1 W
• Modulation system	: Variable reactance phase
	modulation
• Max. frequency deviation	: ±5.0 kHz
• Spurious emissions	: Less than 0.25 µW

• RECEIVER

• Receive system	: Double conversion superheterodyne
• Sensitivity (20 dB SINAD)	: Less than –3dBµ EMF (typical)
• Squelch sensitivity	: Less than 0dBµ EMF

•Intermodulation rejection ratio : More than 68 dB

•Spurious response rejection ratio: More than 70 dB

• Adjacent channel selectivity	: More than 70 dB
• Audio output power	:
IC-M503	2 W at 10% distortion with a 4 Ω load
HM-134	2 W at 10% distortion with a 8 Ω load

■Options

•DS-100 (#02) DSC CONTROLLER

When the DS-100 is installed, the transceiver conforms to DSC Class D for marine digital communications.

•MB-75FLUSH MOUNT

For mounting the transceiver to a panel.

•HM-134REMOTE-CONTROL MICROPHONE

External microphone-type controller. Provides optional inter- com operation. 6 m (20 feet) microphone cable and mount- ing base included. Black color is available.

•OPC-999MICROPHONE EXTENSION CABLE

6 m (20 feet) microphone extension cable for optional HM-134. Up to 2 OPC-999 can be connected. (18 m; 60 feet maximum)

•SP-5EXTERNAL SPEAKER (IC-M503ONLY)

A large, external speaker for superior audio output.

•SP-10EXTERNAL SPEAKER (IC-M503ONLY)

A compact, external speaker. Features easy installation.

•UT-98VOICE SCRAMBLER UNIT

•UT-112VOICE SCRAMBLER UNIT

Ensures private communications. 128 or 32 codes are available. Not available in some countries.

All stated specifications are subject to change without notice or obligation.

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