84-103n iss2 c1725 r1 service manual - mcmurdo · r1 radio service manual issue 2 page 1 1....

R1 Radio Service Manual

84-103M

Commercial in confidence 84-103M

R1 radio service manual Issue 2

Table of Contents

1. Introduction ........................................................................................................ 1 1.1. Scope ............................................................................................................... 1 1.2. Applicability ....................................................................................................... 1 1.3. Safety information ............................................................................................. 2

2. Maintenance schedules ..................................................................................... 3 2.1. Routine testing .................................................................................................. 3

3. Maintenance tasks ............................................................................................. 5 3.1. Mechanical inspection ...................................................................................... 5 3.2. Functional testing.............................................................................................. 5 3.3. Battery replacement .......................................................................................... 6

4. Appendix 1: Specification ................................................................................. 7

This document is McMurdo Limited copyright (©) and contains proprietary owned intellectual property rights and confidential data. All rights are strictly reserved. The information must not be used except for the agreed purpose. Unauthorised use, reproduction or issue to any third party is not permitted without the prior written authority of McMurdo Limited. This document is to be returned to McMurdo Limited when the agreed purpose is fulfilled.


R1 radio service manual Issue 2 Page 1

1. INTRODUCTION The R1 radio is designed specifically to exceed the IMO requirements for GMDSS survival craft radios. The radio is totally waterproof and sufficiently robust to survive marine environments, and is designed to be a 'fit and forget' equipment. 1.1. Scope This manual provides the complete instructions issued to shore-based maintenance (SBM) providers to enable routine and emergency servicing of the radio equipment listed below. 1.2. Applicability This information applies to the following radio equipments:

i McMurdo R1 VHF Radio (English, French & German labelling) i Sea 103 VHF Radio i SOS Rescue VHF Radio



1.3. Safety information Please read the following for your safety: This product has been assessed as presenting negligible hazard in a sealed serviceable state. Safety analysis The following table summarises the nature of the hazard which may be present when the unit is opened or serviced; each hazard is discussed at greater length in the detailed sections. Hazard cause Hazard identification Precautions Lithium battery Explosive risk, corrosive fumes,

fire, biological hazard Handle appropriately, avoid contact

Radio frequency radiation

Physiological hazard Avoid close or prolonged exposure

Lithium batteries

Hazardous chemicals Wear gloves The batteries used in these products contain Lithium (Li). Lithium is inflammable, reacts violently with water and constitutes a biological hazard. These batteries are HAZARDOUS if short-circuited, punctured, incinerated or deformed. Lithium batteries must not be short circuited. Lithium batteries must be handled, transported and disposed of using appropriate safety precautions. The use of rubber gloves as a routine precaution is recommended. In the event of leakage of the battery electrolyte (which can be recognised by a pungent odour), take care to avoid contact, particularly with open wounds; do not ingest the material. Do not attempt to discharge a leaking battery – remove it using appropriate handling materials and seal in a plastic bag, then dispose of it through an approved environmental disposal agent, or in accordance with local regulations.

Radio frequency radiation

Radio frequency radiation A handheld VHF radio produces radio frequency radiation when it transmits. The radiated level is up to 5W for the duration of the transmission. This is above the risk threshold in some countries. Exposure should be limited. Keep transmissions short.



2. MAINTENANCE SCHEDULES 2.1. Routine testing The R1 radio is designed to require no routine servicing. Maintenance is restricted to a visual inspection of the radio, and to ensuring that the battery storage lifetime is not exceeded.



3. MAINTENANCE TASKS 3.1. Mechanical inspection Mechanical inspection is a matter of checking that there is no visible damage to the radio, including the antenna, and to the mounting bracket. 3.2. Functional testing Functional testing verifies the operation of every control, and checks that the radio operates satisfactory on each channel. Test battery The battery fitted to the radio must NOT be used for functional testing. It must be removed and a substitute battery used for the duration of the tests. A suitable battery is the test battery, part number 84-102, or a standard battery which is reserved for functional testing only (and which is so marked). Operation of controls The following section verifies the operation of each control, by describing the effect of the control. The checks should be made in the order given. (It is obvious that the radio must be ON before the operation of any other control can be checked.)

ON/OFF Pressing the ON/OFF button should cause the radio to switch on. The LED indicating Channel 16 should illuminate, the speaker should produce noise (or a signal), and this should reduce after 2 seconds when the automatic squelch operates. Pressing the button again should turn off the radio. Squelch Operating this button when no signal (ie just noise) is being received should cause the emitted sound to become much quieter and much louder alternately. Volume UP and DOWN These buttons should change the volume of sound emitted by the radio. (It may be necessary to press the Squelch button first to produce the maximum sound.) Channel selectors Pressing the channel selection buttons should cause the LED indicator (beside the button) for that channel to flash. Press to talk (PTT) Operating this switch should cause the TX LED to illuminate.



Functional test WARNING: Regulations for the use of GMDSS equipment require that the operators of these radios must be authorised to use them; the Regulations also specify the environments in which the radios may be used. The functional test involves verifying the operation of the radio on all three communication channels. Another radio, which is known to be operational and which covers Channels 6, 13 and 16, is required for this test. Note that this radio does not have to be a Model R1, although testing is simplified if this is the case. The two radios should be separated by a convenient distance (in excess of 10m is recommended) and two-way communication should be established. This communication must then be checked on all three channels. Regulations require that test calls on Channel 16 must be limited to a maximum duration of 10 seconds. 3.3. Battery replacement The radio battery is a single component. There are two versions to match the two colours of radio:

Part number 84-100 (orange) for McMurdo R1 radio Part number 84-101 (yellow) for SOS Rescue radio

The battery has a storage life of 4 years, and should be replaced if its expiry date is prior to the next scheduled inspection of the radio, if the seal on the battery is broken or missing, or after the radio has been used. Disposal of batteries Lithium battery packs should be discharged slowly, then disposed of through an approved environmental disposal agent, or in accordance with local regulations. The rate of discharge must not exceed 100mA. It is recommended to discharge through a resistance of a minimum value of 10 ohms per volt of the nominal battery voltage eg a resistor of 100 ohms (2W rating) is satisfactory for a 9V battery. UNDER NO CIRCUMSTANCE MAY THE BATTERY BE SHORT-CIRCUITED. If the battery shows signs of electrolyte leakage, do not attempt to discharge. Refer to the Warnings section for advice on correct handling.

Use gloves Hazardous chemicals



4. APPENDIX 1: SPECIFICATION

Frequency Channels 6, 13, 16 Transmit Output power 0.5W ERP Current consumption 350mA Spurious emissions -70dB Receive Sensitivity <0.5uV for 20dB sinad Adjacent channel sensitivity 70dB Intermodulation 70dB Spurious emissions 2nW Audio output power 0.4W (1kHz tone, 3kHz deviation) Current consumption 150mA at rated audio power 10mA squelched Battery Lithium primary battery Battery storage life 4 years Battery life 12 hours (10/10/80 duty cycle –

transmit/receive/squelched) Weight 400g Water resistance Waterproof to 1m Buoyancy Floats

McMurdo Limited Rodney Road Portsmouth PO4 8SG United Kingdom Telephone: Int + 44 (0)23 9277 5044 Fax: Int + 44 (0)23 9281 9087 WebSites: www.mcmurdo.co.uk & www.pwss.com

84-103M Issue 2

CHEMRING GROUP PLC

www.mcmurdo.co.uk

www.pwss.com

84-103n iss2 c1725 r1 service manual - mcmurdo · r1 radio service manual issue 2 page 1 1....

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