Channel Master CM-5020 Specifications Page 25
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4.6.3 Automatic channel shift
The VHF can be set to automatically changing the working channel on receipt of the
following call types:
• Individual radiotelephony acknowledgement with a valid channel information
• Radiotelephony group calls with valid channel information
• Radiotelephony all ship safety calls with valid channel information
The set-up is done via menu 4.5.5. The setting will survive powering off the product.
If enabled, a received call will start the (normally) periodic alarm only once. The channel will
switch immediately after and the window is closed.
The automatic channel shift is overruled (turned to manual acknowledgement - requiring
press on OK or a hook-on to hook-off transition) if:
• Any handset is hooked off
• The received call cannot currently be presented on the information display (due to
priority)
Distress calls and all ship calls with category distress or urgency will alert continuously until
manually handled from the front panel.
4.7 Implicit behaviour for operations with DSC
This section describes assumptions and decisions made that are critical for correct function-
ality, but might be hidden to the operator in the display.
4.7.1 DSC transmission
All DSC calls are transmitted on channel 70 with a transmitter power of 25W. Distress,
urgency and non-test safety calls are always transmitted. Other calls are sent only if the
radio is not already recognizing a DSC message on channel 70.
4.7.2 Transmitting undesignated distress
Undesignated distress (solely created using the DISTRESS button) does not show any
message prior to the actual transmission. The following message will be sent:
Format specifier: Distress (112)
Self-Id: <Your MMSI number>
Nature of distress: Undesignated (107)
Distress coordinates: Automatically inserted if position is available (e.g. from GPS),
otherwise unknown (9999999999)
Time of position: Automatically inserted if time of position is available (e.g. from GPS),
otherwise unknown (8888)
Subsequent communication: 100
EOS: 127
0544
- SAILOR RT5022 VHF DSC 1
- SAILOR RT5020 VHF DSC Duplex 1
- Introduction 3
- Training Information 4
- Quick DSC distress call 5
- (only for emergency use) 5
- Mayday procedure 5
- Your VHF at a glance 6
- (RT5020/RT5022) 6
- Contents 7
- 1.1 Powering VHF 9
- 1.5 Speaker volume 10
- 1.6 Earpiece volume 10
- 1.7 Squelch 10
- Activating replay 11
- 1.11 Dimming 12
- 1.12 Contrast 12
- 2 Basic DSC operations 13
- 2.3 Transmitting DSC Calls 14
- 2.4 Call a ship station 14
- 2.5 Call a shore station 14
- 2.7 Call a group of ships 14
- 2.8 Create emergency calls 15
- 2.9 DSC call log 15
- 3 Your VHF in detail 16
- 3.4 Setting channel mode 17
- 3.5 Private channels 17
- 3.6 Duplex channels 17
- 3.8 Transmitter power 18
- 3.9 Channel scanning 19
- 3.10 Creating scan tables 19
- 4 DSC operations in detail 20
- 4.2 Group MMSI number 21
- 4.4 Working channel 22
- 4.5 Contact list 22
- 4.5.2 Show contact 23
- 4.5.3 Adding a new contact 23
- 4.6.1 Special calls 24
- 4.6.3 Automatic channel shift 25
- 4.7.1 DSC transmission 25
- Transmit Station Call 26
- MMSI: 001234567 26
- <Menu/back 26
- 4.8.1 Idle display 27
- 4.8.3 Language 27
- 4.8.4 Privacy talk mode 28
- 4.10 Automatic conditions 29
- 4.11.1 Radio software release 30
- 5 Errors and warnings 31
- Fuse 15A ATO 32
- 5.2.2 Self-test 32
- 5.2.3 GPS 33
- 5.2.4 Accessory connection 33
- 5.2.5 DSC routine testing 33
- 5.2.6 Missing MMSI 34
- 5.2.7 Radio time 34
- 5.2.8 Channel not free 34
- 5.2.9 Device failure 34
- 6 Menu tree 35
- 7 Optional functional devices 37
- 7.1.2 Operation 38
- 7.1.3 ON/OFF 38
- 7.1.4 Channel selection 38
- 7.1.5 Volume 38
- 7.1.6 Squelch 39
- 7.1.7 Dimming 39
- 7.1.8 Receiving a DSC call 39
- 7.1.9 Muting alarms 40
- 7.1.10 Transmitter power 40
- 7.1.11 Replay 40
- 7.2.1 Distress initiation 41
- 7.3 Printer 42
- 8.1 International channels 43
- 8.2 US channels 44
- 8.3 BI channels 45
- 8.4 CA channels 46
- VHF with mounting bracket 47
- Mounting option Drilling plan 48
- Drilling plan 48
- Handset for transceiver 49
- Installation 50
- 9.2 Compass safe distance 53
- Connection box board 639121 55
- Extension board 639123 55
- Cable connection diagram 57
- Interfaces 58
- Sparc II Connections 58
- 9.5.1 Antennas 61
- 9.5.2 RX/TX antenna 61
- 9.5.3 DSC antenna 62
- 10 Technical specifications 63
- Thrane & Thrane A/S 68
- [email protected] 68
- www.thrane.com 68
- B5022GB0 Issue: L /09 02 68
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