Navico Inc. HS35 ユーザーズマニュアル

A valid USER MMSI must be entered into this radio before these DSC functions can be 
used. See section 5-1.

DSC (Digital Selective Calling) is a semi-automated method of establishing VHF, MF, and HF 
radio calls. It has been designated as an international standard by the IMO (International 
Maritime Organization) and is part of the GMDSS (Global Maritime Distress and Safety 
System). 

Currently, you are required to monitor Distress Channel 16, but DSC will eventually replace 
listening watches on distress frequencies and will be used to broadcast routine and urgent 
maritime safety information. 

DSC enables you to send and receive calls from any vessel or coast station that is equipped 
with DSC functionality and within geographic range. Calls can be categorized as distress, 
urgency, safety, or routine, and DSC selects a working channel automatically. 

You can call any other person that has another DSC equipped radio.

•  Quick press the CALL / MENU key to access the following DSC CALL menu options – select 

LAST CALL to quickly call back the person who called you.

•  Note that only four DSC CALL menu options can be shown on the LCD at any one time. 
•  Press + or – on the microphone or turn the Channel Select knob on the base station to 

scroll up or down through the menu until the cursor is positioned at the desired option. 

Press ENT (the center of the Channel Select knob) to display that option.

The following options are available:

Make a DSC Call

Section 8-3

Repeat the last DSC Call

Section 8-5

Make a Group DSC Call

Section 8-6

Make an All Ships DSC Call

Section 8-7

View DSC Call Log

Section 8-8

View DSC Distress Log

Section 8-9

View DSC Sent Call Log

Section 8-10

Request a position report

Section 8-11

Automatically track Buddy’s

Section 8-12

Make a DSC Test Call

Section 8-13

View MMSI and GPS information

Section 8-14

DSC CALL

►INDIVIDUAL

 LAST CALL

 GROUP

 ALL SHIPS 

▼

INDIVIDUAL

►ROUTINE

 SAFETY

 URGENCY

INDIVIDUAL

 MANUAL NEW

►MERMAID IV

 SEAROSE

CHOOSE CH

►INTER-SHIP

 MANUAL

MERMAID IV

 INDIVIDUAL

 ROUTINE

►SET INTER

MERMAID IV

 INDIVIDUAL

 ROUTINE

►SEND?

MERMAID IV 

INDIVIDUAL

ROUTINE

WAIT.. 00:00

INDIVIDUAL

ROUTINE

ACK FROM

MERMAID IV

  

▼ 00:00

DSC CALL

►INDIVIDUAL

 LAST CALL

 GROUP

 ALL SHIPS 

▼

INDIVIDUAL

ROUTINE

 SAFETY

 URGENCY

INDIVIDUAL

MANUAL NEW

 MERMAID IV

 SEAROSE

MANUAL MMSI
0

CHOOSE CH

►INTER-SHIP

 MANUAL

678912345

 INDIVIDUAL

 ROUTINE

SEND?

678912345

INDIVIDUAL 

ROUTINE

CALLING...

678912345

INDIVIDUAL

ROUTINE

WAIT.. 00:00

1. 

Select DSC CALL then INDIVIDUAL. 

2. 

Select the priority level: ROUTINE, SAFETY, URGENCY.

3. 

Select the buddy you want to call from your buddy list - or Select MANUAL NEW then 

enter the MMSI of the individual you want to call and press ENT.

4. 

 Choose a working channel to talk on. Select the INTER-SHIP and press ENT. The radio 

automatically lists all Inter-ship (Simplex) channels that can be used. Duplex channels 

cannot usually be called, however, If you wish to use a Duplex channel, select MANUAL 

instead, then select your channel of choice. If the call is to a Coast Station (MMSI begins 

with 00) the radio will recognize this and specify the correct channel to talk on.

5. 

Press ENT to SEND the call. Channel 70 is selected automatically and the Tx symbol is 

shown on the LCD while the call is being sent.

6. 

The radio waits for an acknowledgement (WAIT). If the call is acknowledged (INDIV ACK) 

press PTT to talk. Rotate the Channel Select knob to view additional options.

7. 

If there is no reply (UNABLE TO ACKNOWLEDGE) a message asks if you want to retry 
(SEND AGAIN?). Press ENT to retry the call.

Simrad - RS35 Operation Instructions

Simrad - RS35 Operation Instructions

47

46