Contents 1 Description 2 Specification 3 Operation 3.1 Location of Controls 3.2 Switching on 3.3 Squelch and volume 3.4 Transmitting 4 Maintenance 4.1 Battery replacement 4.2 Fuse 4.3 Passivization of Batteries 4.
1. Description The "Murdoch Marine R3" Radio is a rugged portable handheld transceiver designed for ship to aircraft emergency communication. it operates at the primary and auxiliary aeronautical emergency frequencies 121.5 and 123.1 MHz. The internal primary single cell lithium battery combines a minimum of replacement cost and typically 24 hrs of normal operation (90% standby, squelched receiver, 5% receive audio, $% transmit).
2. Specifications (contd) Receiver (contd) Selectivity/blocking :>70dB Receiver antenna emission | <2nW {9kMz to 2 GHz) Audio level ’ 1 >200 mW (1.26Vrms / 8Q2) Audio bandwidth + 300 Hz to kHz (typical) Environmental Dry heat 1 +55°C, storage +65°C (131°F, storage 149°F) Damp heat : +40°C @ 93%relative humidity Low temperature storage ~25°C storage 13°F) Drop onto hard surface: im (3.3 ft) Mechanical Size ex. antenna + 210%77x40mm {8.3x3x1.
3. Operation 3.
3. Operation 3.2 Switching on The antenna must be fully extended before operation. The transceiver is turned on by the frequency selector located at lhe top of the transceiver. Move the selector to the left for 121.5 MHz (the primary aeronautical distress frequency) and to the right for 123.1 MHz (the auxiliary frequency) off er et 121.56 MHz 123.1 MHz Primary Auxiliary frequency frequency 3.3 Squelch and volume Turn the “squelch” fully counter clockwise (CCW) to activate the speaker.
4. Maintenance 4.1 Battery replacement Turn off the transceiver. Open the battery cover by removing the four screws Remove and unplug the battery. Replace the new battery and reassemble the cover. Date of expire must be noted at the back side of the transceiver (usually four years after replacement). Avoid short-circuiting the battery. Old hatters should be disposed as special waste. 4.2 Fuse The negative battery circuit of the transceiver is fused for security reasons.
5. WARRANTY This product is covered by a 12 month non-transferable manufacturer's limited warranty commencing on the date of purchase. The warranty covers faulty materials ahd workmanship during manufacture, but excludes normal wear and tear, willful damage, negligence, abnormal conditions and failure to follow manufacturer's instructions. The manufacturer shall not be liable for any consequential loss or damage caused by a defective product. A copy of the full warranty conditions is available upon request.
Murdoch Ltd Rodney Road Frat ton Portsmouth Hampshire United Kingdom PO4 8SG A member of Cheering group PLC Manual Part No 87-201.