McMurdo F1 DSC Marine VHF Radio with DSC Operation Manual
Controls Indicators Scroll keys Right action key Left action key PTT switch Power switch Distress cover Disclaimer Information contained in this manual is supplied in good faith, but is liable to change without notice. McMurdo Limited disclaims any liability for consequences arising from omissions or inaccuracies in the manuals and documentation provided with this product. IMPORTANT: Before you use this transceiver, read and understand all the instructions in this manual. 2002 McMurdo Ltd.
Rapid Distress Call 1. Turn the radio ON (press POWER) 2. Open the cover over the DISTRESS button and press the button. If the button is pressed for 5 seconds an ‘undesignated’ distress call will be made. If the button is released before 5 seconds, you can select the type of emergency. If the position information is too old to be valid, you will be prompted to update it. (See Page 6 for full details.) 3. If there is insufficient time to enter position information keep pressing the Distress Button.
Introduction Thank you for choosing McMurdo for your VHF communication requirements. McMurdo has supplied the maritime market for many years with communication products of high quality and excellent design, and considers it of utmost importance that all products are safe and easy to operate. The product The McMurdo F1 DSC VHF radiotelephone is designed to meet the high quality standard required for a product that plays an important role in the safety of the ship and its crew.
Verbal Communication Verbal communication is of two types: simplex and duplex. • Simplex communication uses a single frequency, so only one transmitter can be operating at any time. This means that each party in the conversation must say ‘over’ when stopping transmitting so that the other party knows it is their turn to transmit. All ship-to-ship communication is in simplex mode. The F1 DSC radiotelephone supports simplex communication.
Key to Symbols: Indicates that an Action key must be pressed. Example: Press the Menu Action Key. 50°56'N 001°34'E Menu at:08:40 UTC 16 Pos Indicates that the Scroll keys must be pressed to change data highlighted (displayed in inverse contrast characters) in a screen or menu, or to change channel in standby mode. Shaded text Indicates that the appropriate Action key must be pressed after data entry / selection is complete.
Installing and Using the Transceiver Safely Installation (see also the F1 DSC radiotelephone Installation Manual) WARNING: Do not connect the transceiver to a mains (line) AC electrical supply, as an electric shock or fire hazard could result. CAUTION: Do not connect the transceiver to a DC supply exceeding 16V or reverse the supply polarity. Damage to the transceiver can result. CAUTION: Do not bypass the power cable inline fuse (such as cutting the cable shorter).
Radio Frequency Exposure Warning To meet the current requirements for Radio Frequency Exposure it is necessary to install the antenna mast correctly and operate the equipment according to the instructions. WARNING: The antenna mast must be mounted at a minimum distance (vertical separation) of 3 metres from the head of any person to meet international safety directives on Maximum Permissible Exposure (MPE) / Specific Absorption Rate (SAR).
Contents Controls and Indicators ...................................................................................... 1 Power ................................................................................................................ 1 Volume .............................................................................................................. 1 Squelch.............................................................................................................. 1 Distress.....................
Full DSC operations .......................................................................................... 27 Distress Call Including Nature of Distress........................................................ 27 Transmitting an All Ships Call.......................................................................... 31 Received message log...................................................................................... 33 Directory ....................................................................
Controls and Indicators Indicators Scroll keys Left action key Right action key PTT switch Power switch Distress cover Power The Power button is an ON/OFF switch. Because it is separate from the volume control, there is normally no need to reset the volume level after switching ON the radio. To switch on the radio press Power, briefly, until display becomes active. Volume The Volume knob is a standard rotary control. It controls the volume of both the internal and external speakers.
Distress This control is a button which is concealed by a sprung cover, so preventing accidental activation of the DSC automatic distress alert operation. 16 This button immediately switches the radio to a listening watch on Channel 16. This function takes priority over any activity other than a distress call. 1/25 This button toggles the output power of the radio between 1W and 25W on successive operations.
Action keys 50°56'N at:08:40 The Action Keys are the two keys 001°34'E UTC indicated by pointers below the display. Their function changes Menu according to the operational mode of the radio, and is shown by appropriate labels on the display. 11 Pos In ‘normal’ mode (‘standby screen’), the Left Action key and Right Action key have the functions Menu and Pos, respectively. Menu displays the parameters for digital control of the radio; the scroll keys move through the menu or sub-menu items.
Display The ‘standby screen’ is shown here. This is the display for normal radio operation. Latitude Longitude 50°56'N 001°34'E at:08:40 / 11 Menu are shown here as 'standard' position values. If ‘enhanced’ position is selected (see page 42 'Setting Profiles: Position Indication') then position is shown to the nearest second ("). Example: 50°56'23" N. Pos F1 radio is currently tuned to Channel 11. ‘at: HH:MM’ displays the vessel local time in 24 hour format.
How to Access F1 Radio Features Using the Menu The F1 radio is easy to operate. Many functions are available from simple front panel controls, but most features are accessible from the easy to navigate ‘menu’ (series of linked software controls). The main menu is accessible from standby mode. The standby display (or ‘screen’) is shown here. 50°56'N 001°34'E Menu at:08:40 UTC 16 Pos The Menu action key (associated with the Menu label on the standby screen) must be pressed to allow access to menus.
Basic Telephony Operations Power On/Off The F1 radio is switched ON and OFF by the POWER button (see page 1). When the radio is switched ON, it performs a series of self-tests including memory and key and display illumination tests. When complete the display shows radio identity and type information, then switches automatically to a listening watch on Channel 16. If any problem is encountered, a message is displayed.
To move to another line press a scroll key. Time (hh:mm) must now be entered in the Pos at:−−:−− blank area. If time is not entered (and the Done Action-key is pressed) the message Invalid Time will appear for 2 seconds. Note that entering a time via the Position Update screen will not update the radio clock time 3. It is a static time, which should be updated every 4 hours as a minimum, where no GPS data source is available. Clock time (and date) is set in ‘Profiles’ 4 (accessible via the Menu Action key).
Receiving and Transmitting The radio will operate as a basic transceiver for verbal communication without requiring any information programmed into it. However, it cannot be used as a DSC communication system before it has a 'profile' set into it (i.e. as a minimum, the MMSI number must be set). Please refer to the 'Setting Profiles' section 'Setting the MMSI' for more information. Listening for Voice Communications (Telephony Calls) To prepare to listen to telephony calls: 1.
Receiving Telephony (Voice) Calls When a call is received and the call sign of your vessel (or station name) is heard in loudspeaker (or handset where appropriate): Press / hold PTT key 1. Pick-up the fist-microphone or handset and press and hold the PTT key, to answer the call. 2. Say: ‘ This is ’. SeaMist. This is SunCruiser. (Goto) Channel 68. Over. NOTE: It is essential to propose a working channel for subsequent communications (not Channel16).
Making Telephony (Voice) Calls To initiate a radio telephone (telephony) call: 1. Ensure the radio is in standby mode and select a channel (channel 16 5 or another suitable channel). 50°56'N 001°34'E Menu 2. Select transmit power: 1W for short range, or 25W. at:08:41 UTC 16 Pos 1/25 3. Pick-up the fist-microphone or handset and press and hold the PTT 6 key. 4. Say: ‘’ (3 times) ‘This is ’ (3 times). ‘Over’. SeaMist, SeaMist, SeaMist.
Speaker Mute Function NOTE: If an external speaker is fitted, at power on the external speaker is muted, and the internal speaker unmuted. The F1 radio internal and external speakers can be independently muted. To change the mute status of the speakers: 1. In standby mode, press Menu. 50°56'N 001°34'E Menu at:08:41 UTC 68 Pos 2. Press the Scroll Up key to select Profiles. Send DSC Messages Select 3. When Profiles menu option is displayed press Select action key. Profiles Select 4.
Display and Keyboard Dimming The LCD (Liquid Crystal Display) backlight illumination level can be changed using the light key. Each press of the light key will cycle through different combinations of illumination levels for display and keyboard as listed here: Display DIM FULL OFF DIM (reversed) Keyboard ON ON OFF ON Auto Dim The F1 radio provides an Auto Dim feature. The default state is Auto Dim ‘On’.
Basic DSC Operations All DSC communication is on Channel 70. The radio maintains a continuous watch on this channel for incoming messages, which are immediately reported. This monitoring also allows the system to transmit only when the channel is free. Receiving an Individual DSC Call When the radio receives an individual DSC message an alarm will sound, and the message Individual Call is displayed. If the call type is 'Distress' or 'Urgency' the alarm ('notify beep') will sound repeatedly every second.
Transmitting a DSC Call to a Ship Station To transmit a call to a ship station (individual call): 50°56'N 001°34'E at:08:41 UTC 16 1. Press Menu action key to display top level menu selection; (Send DSC messages). Menu 2. Press Select action key to display the Send DSC Messages menu. Send DSC Messages Select 3. The first (default) option displayed in the Send DSC Messages menu is Individual or group. This call is to an individual station so press Select to display the Individual or group menu. 4.
Transmitting an Individual DSC Call Using Called Station Name To Transmit an Individual Call Using Station Name: 50°56'N at:08:41 1. Press Menu action key to display top level menu selection; (Send DSC messages). 2. Press Select action key to display the Send DSC Messages menu. 3. The first (default) option displayed in the Send DSC Messages menu is Individual or group. This call is to an individual station so press Select to display the Individual or group menu. 4.
Transmitting a Call to a Coast (Shore) Station When calling a Coast Station (ie a fixed installation whose MMSI number begins ’00….’), it is that station which selects the channel number for communication. As a consequence, it is necessary to wait for the acknowledgement as this contains the calling channel number. Calling a Coast Station produces a prompt Insert position Yes; to select ‘No’, use the scroll keys.
5. Use the numeric keys to enter the MMSI, and Clear to backspace and correct any error. Ensure 9 digits are entered, then press Select. (when MMSI entered) Called stn MMSI MMSI:00232144 Select Clear 6. The radio recognises the '00' prefix as a Coast Station call; the display changes to Coast station Call and you are prompted to insert a position Coast station Call (to be sent with the transmission).
Transmitting a Call to a Group When calling a group of stations (i.e. stations all of which share a group MMSI number, which begins ’0….’), no DSC acknowledgement is required or possible. To Transmit a Call to a Group of Stations: 1. Press Menu action key to display top level menu selection; Send DSC messages. 2. Press Select action key to display the Send DSC Messages menu. 3. The first (default) option displayed in the Send DSC Messages menu is Individual or group.
Full Telephony Operations Changing the Priority Channel The Priority Channel is the channel which is always monitored, and is selected when the transceiver is switched on. The Priority Channel is normally set to Channel 16, but it can be changed to any available channel by the operator. To Change the Priority Channel: 1. Press Menu action key to display top level menu selection; Send DSC messages. 50°56'N 001°34'E Menu 2. Press the Scroll Up key to display the Profiles menu.
Dual watch The feature allows the radio to monitor automatically both the Priority Channel and a selected additional channel. To use the Dual Watch function, first set the radio to the desired channel, then push the dual watch key. The display will alternately display selected channel number and channel 16, at a rate which is controlled by the Scan Dwell Time (refer to the 'Setting Profiles' section for information on this parameter).
Channel scanning Channels may be sequentially monitored for activity using the Channel Scanning facility of the F1 radio. While scanning the radio automatically maintains a watch on a channel for the duration of the set dwell time. The dwell time can be set in the Profiles menu. If no signal is detected the radio moves to the next channel in the sequence of channels, which may be the next consecutive channel.
Scanning All Channels To Scan All Channels: 1. Press Menu action key to display top level menu selection; Send DSC messages. 50°56'N 001°34'E Menu 2. Use the Scroll keys to display the Channel scanning menu. at:08:41 UTC 16 Pos Send DSC Messages Select Exit 3. Press Select. Channel scanning Select 4. The first option displayed in the Channel scanning menu is Run scan program. Press Select. 5. The first option displayed in the Run scan program menu is Scan: ALL. Press Select. 6.
Inhibiting a Channel To Inhibit a Channel when Scanning: 1. The scan program is now running. The Scan ALL run screen is displayed. Press Stop. 2. The screen now displays the new scan status: Inhibit chXX, where XX was the channel when Stop was pressed. Example: Ch25. Press Select. The scan program is now running again, But channel 25 is now temporarily deleted from the list of channels to be scanned, and the radio will skip over channel 25 when selecting channels during the scan process.
Creating and Editing a Scan Program To Create (and Edit) a Scan Program: 1. Press Menu action key to display top level menu selection; Send DSC messages. 50°56'N 001°34'E Menu 2. Use the Scroll keys to display the Channel scanning menu. 4. The first option displayed in the Channel scanning menu is Run scan program. Use the Scroll keys to display the Edit scan program menu. Press Select. 5. The first option displayed in the Edit scan program menu is Scan: ALL.
8. To make a scan table containing the following entries: Scan Program 01 Entry Channel 1 11 2 13 3 6 4 10 5 67 Press numeric key ‘1’ twice to enter ‘Channel 11’. First press of the numeric key displays 1 second press displays 11. 2 seconds after the last key press, the radio will move to the next entry, ready for editing, so edit each channel by pressing the numeric keys quickly. 9. The second entry is now highlighted xxx ready for editing (vacant channel entry position).
DISTRESS Rapid Distress Call IMPORTANT: To send a Distress Call, (without designating the distress type), do this: 1. Open the Distress Button cover. 2. Press and hold the Distress Button. DISTRESS Keep pressing the button. You will hear an Alarm Tone. 3. The display will show different screens and may prompt you for more information. Ignore the prompts. Keep pressing the button until you see this screen. Distress Call Undesignated Wait for Acknowledge Reset 16 4.
Full DSC operations Distress Call Including Nature of Distress To make a Distress Call including Nature of Distress (Method 1): (GPS connected) 1. Open the Distress Button cover. DISTRESS 2. Press the Distress Button for less than 5 seconds. (A 1 second push is sufficient.) You will hear an Alarm Tone. 3. The radio displays the Pre-Distress Warning screen. You can choose: • not to send a Distress Message (press Back) or • continue to the Distress Options (press Options).
6. Press and hold the Distress Button for at least 5 seconds. DISTRESS You will hear an Alarm Tone. 7. Display shows ‘Distress Call’ and an instruction to hold the Distress Button for 5 seconds. 8. Continue to hold the Distress Button, display shows a countdown number, in seconds, until the Distress Message is sent. Count is from 5 down to 0 seconds before the Distress Message is transmitted. WARNING: If you release the Distress Button before 5 seconds has elapsed the Distress Message is not transmitted.
12. If an acknowledgement is received the display shows Distress acknowledge received for 4 seconds, then the state is changed to Distress in progress. 13. Distress in progress screen is displayed after an acknowledgement or if Reset is pressed. In the 'Distress in progress' state, the distress message is not re-transmitted. Distress acknowledge received Distress in progress Reset 16 14.
To make a Distress Call including Nature of Distress (Method 2): (GPS unavailable) 1. Open the Distress Button cover. 2. Press the Distress Button for less than 5 seconds. DISTRESS DISTRESS (A 1 second push is sufficient.) You will hear an Alarm Tone. 3a. The radio displays the Pre-Distress Warning screen. Distress Call Hold for 5 seconds or quit for options Options Back 3b. No position information is available; display shows, briefly Position too old.
Transmitting an All Ships Call When sending an All Ships message, no DSC acknowledgement is required or possible. Obviously, an All Ships call is not addressed to a specific station and so does not need the details of the called party; it does, however, give the choice of Safety or Urgency messages. An Urgency message is used when safety is threatened but there is no imminent danger.
6. The radio prompts for a working channel number to include in the DSC message. If the default working channel is not suitable use the scroll keys or numeric keys to change the channel, then press Send. 7. The message is now transmitted to All Ships. All Ships Call Safety Working Channel:6 Send Back 50°56'N 001°35'E Reset If acknowledgement is received, the radio channel changes to the working channel and the left action key now has the function Reset.
Received message log The radio retains two lists of received messages, one for Distress and All Ships calls, and one for all other calls. Any message which is unread causes an indicator ( / ) to be displayed when the radio is in listening mode. These lists each retain 20 calls; when a list is full, a new call overwrites the oldest call in the list. To read received DSC messages: 1. (In standby screen) press the Menu key. 50°56'N 001°34'E Menu 2.
8. To acknowledge the message press Select, otherwise use the scroll keys to highlight No and press Select, or press Back. 9. If Back is pressed the screen returns to the list of received DSC messages. Message 1 now has a character ‘R’ attribute. This indicates that the message has been read. 10. To read more messages use the scroll keys to highlight the appropriate message number, then repeat steps 6 to 8 to read / acknowledge the message(s). 11.
Directory The directory allows the user to store the names of vessels, coast/shore stations, etc together with the corresponding MMSI. A total of 50 entries may be stored. The directory may be searched for a particular name; entries may be added and erased. Adding a Directory Entry To Add an Entry to the Directory: 1. Press Menu and scroll to Directory. Press Select and scroll to Add Entry. 2. Press Select. Select Exit Directory Add Entry Select 3.
Erasing a Directory Entry To Erase a Directory Entry: 1. Press Menu, scroll to Directory, and press Select. 2. Scroll to Erase and press Select. 3. The display shows the first Station Name entry (list in alphabetic order) and MMSI number. Scroll through the list of names (or enter an initial character using the character entry method described in ‘Adding a Directory Entry’, steps 4 and 5) to find the desired entry. 4. Press Erase. The display will confirm that the entry has been erased.
Setting Profiles The radio cannot be used to transmit in DSC mode until, as a minimum, its MMSI number has been programmed into it. Setting the MMSI Number The MMSI (Maritime Mobile Service Identity) number is a 9-digit identifier which enables a registered vessel to be identified. MMSI numbers are of three types: individual, group and coast station. • An Individual Number identifies a single radio installation.
Group MMSI Numbers A radio may be a member of up to 4 MMSI groups (for example, a group MMSI could be assigned to a fishing fleet). Setting a group MMSI is similar to the process for setting the individual MMSI. 1. After selecting Profiles – MMSI number, scroll to Group MMSI and press Select. Group 1 is displayed first; Groups 2, 3, and 4 are displayed by scrolling. 2. Press Edit to enter the Group MMSI number.
Key Beep The key beep volume may be set as high, low or off. This option is changed using the scroll keys. To set Key Beep mode: 1. In standby screen, press Menu, then scroll to Profiles and press Select. Select 2. Scroll to Key beep and press Select. Exit Profiles Key beep Select 3. Scroll through the selections Off / Low / High. When the desired option appears press Select.
Speaker Settings This control allows any combination of internal and external speakers to be active. The four possibilities are selected by the scroll keys. To set Speaker Options: 1. In standby screen, press Menu, then scroll to Profiles and press Select. 2. Scroll to Speaker settings and press Select. 3. Scroll through the Int/ext: (internal / external speaker) selections. When the desired option appears press Select.
LCD Contrast Adjust This control allows the contrast of the LCD display, and thus the viewing angle of the screen, to be adjusted using the Scroll keys. To set the Contrast Level: 1. In standby screen, press Menu, then scroll to Profiles and press Select. 2. Scroll to Display settings and press Select. 3. The first option displayed in the Display settings menu is LCD contrast adjust. Press Select. 4. Scroll through contrast levels 0-30. When the desired level is reached press Select. (Default level is 15).
Software Version This control displays the radio software version. No change is possible. To display Software Version: 1. In standby screen, press Menu, then scroll to Profiles and press Select. Profiles Software version 2. Scroll to Software version and press Select. Select 3. Software version is displayed. The version number may differ from the version displayed in your radio. Software version McM Fixed VHF 1.1 OK Back Back 4. Press OK to return to standby screen.
Time/Date and Offset This control allows the time and date to be set (from the numeric keys). Time may be displayed as UTC or as local; local time is set as an offset (number of hours difference) from UTC. When setting the offset, the first position is the positive/negative setting; pressing any numeric key or ‘*’ or ‘#’ toggles ‘+’ or ‘–’. To set Time and Date: 1. In standby screen, press Menu, then scroll to Profiles and press Select. 2. Scroll to Time/Date and Offset and press Select.
Radio Test This control performs a self-test on the radio. The screen displays the result of the test. The results, and actions to be taken, are discussed in ‘Appendix C: Error Messages / Troubleshooting’. To perform Radio Self Test: 1. In standby screen, press Menu, then scroll to Profiles and press Select. 2. Scroll to Radio test and press Select. 3. There is only one test option in this radio version. With Self test highlighted, press Select. 4.
APPENDICES Appendix A: Character Entry To enter station names using numeric keypad, use keys 0-9 to access letters a-z as follows: 1 2abc 3def 4ghi 5jkl 6mno 7pqrs 8tuv 9wxyz # 0 * In a mode requiring alphanumeric entries, press the appropriate key (1 to 5 presses) until the desired character is displayed, as shown in the table below.
Appendix B: Menu Hierarchy * Appendix Page 2 *
Appendix Page 3
Appendix C: Error messages / Troubleshooting Problem Radio cannot be switched on. No sound from radio. Radio will not scan (scan program selected and running) No sound heard from speaker Probable Cause / Solution 1. Poor connection to power supply / battery. (Check connections.) 2. Fuse blown. (Inspect wires and fuse.) 1. Volume control set too low. (Rotate volume control clockwise). 2. Squelch level too high. (Back off squelch – rotate squelch control anticlockwise.) 3. Water in front of speaker.
When the radio switches on, it tries to find a source of GPS derived positional information, via the NMEA port, and the display message is ‘Search for Position’. If no position information is detected within 2 minutes, the display message is ‘Pos update not found’. Radio synthesiser lock could not be confirmed. Operation of the radio is inhibited. (If the fault persists after the radio is switched off and on again, then it will be necessary to consult a Service Agent.
Checksum of Scan Programs is invalid. (The radio will clear Scan Programs to default when OK is pressed.) RAM memory fault Scan programs cleared OK Checksum of DSC Log data is invalid, (Distress and Ordinary Log data). (The radio will attempt to correct the fault but a list mismatch may occur. Press OK to continue.
Operational Error Messages (1) Type of Test / Error Message Length of stn MMSI must be 9 digits Probable Cause / Solution Range check: MMSI number. An attempt was made to save an MMSI number of less than 9 digits. (Please enter 9 digits.) Ship MMSI number can not be 000000000 Range check: Ship MMSI as default. An attempt was made to save a default MMSI number. (Please enter a valid MMSI number.) Group MMSI number can not be a coast station Range check: Group MMSI.
Operational Error Messages (2) Type of Test / Error Message No name entered! Log empty Individual Call Call stn: 123456789 Sending Reset DSC Aborted Appendix Page 8 Probable Cause / Solution Directory: an attempt was made to save an entry without a name (no characters were entered). (Please enter some characters into the ‘name’ field.) Log empty: An attempt was made to view an empty Distress or Ordinary Message Log. (No messages were received.) Busy DSC Channel.
Appendix D: Channel Specifications International Channel 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Channel 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 Tx MHz 156.050 156.100 156.150 156.200 156.250 156.300 156.350 156.400 156.450 156.500 156.550 156.600 156.650 156.700 156.750 156.800 156.850 156.900 156.950 157.000 157.050 157.100 157.150 157.200 157.250 157.300 157.350 157.400 Rx MHz 160.650 160.700 160.750 160.800 160.850 160.
US Channels Channel 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Channel 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 Tx MHz 156.050 Rx MHz 156.150 156.150 156.250 156.300 156.350 156.400 156.450 156.500 156.550 156.600 156.650 156.700 156.800 156.850 156.900 156.950 157.000 157.050 157.100 157.150 157.200 157.250 157.300 157.350 157.400 156.250 156.300 156.350 156.400 156.450 156.500 156.550 156.600 156.650 156.700 156.750 156.
BI Channels Channel 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Channel 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 Tx MHz 156.050 156.100 156.150 156.200 156.250 156.300 156.350 156.400 156.450 156.500 156.550 156.600 156.650 156.700 156.750 156.800 156.850 156.900 156.950 157.000 157.050 157.100 157.150 157.200 157.250 157.300 157.350 157.400 Rx MHz 160.650 160.700 160.750 160.800 160.850 160.300 160.950 156.400 156.450 156.
OTHER INFORMATION Line of Sight distances Ship antenna height (metres) 0.5 1 3 5 10 30 Base station antenna height (metres) 0.5 1 3 5 10 30 3.1 3.8 5.4 6.6 8.6 13.8 3.8 4.5 6.1 7.2 9.3 14.4 5.4 6.1 7.7 8.8 10.9 16.1 6.6 7.2 8.8 10.0 12.0 17.2 8.6 9.2 10.9 12.0 14.1 19.3 13.8 14.4 16.1 17.2 19.3 24.4 Distances are nautical miles. The illustration shows the line of sight (the curvature of the Earth is exaggerated for clarity).
McMurdo Limited Product Warranty Subject to the provisions set out below McMurdo Limited warrants that this product will be free of defects in materials and workmanship for a period of 24 months from the date of purchase.
Declaration of Conformity The Declaration of Conformity is included in the F1 Radio Installation Manual.
Notes
Record Serial No.: MMSI: Date of Purchase: Dealer Stamp McMurdo Ltd Silver Point Airport Service Road Portsmouth Hampshire United Kingdom PO3 5PB A member of Chemring Group PLC www.mcmurdo.co.
