Furuno FS-1570 - Manual (Page 68)

5 CALLING, RECEIVING
5-6
To send a call, set the working frequency as below, to communicate with the receiving station.
The working frequency can be entered by Tx and Rx frequencies or channel number.
Routine or ship's business priority
1. After selecting FREQUENCY or CHANNEL, one of the following pop-up windows appears.
How to Set Working Frequency, Channel
TX: 0.0 KHZ
RX: 0.0 KHZ
Frequency
CH: 0
Channel
2. Key in TX frequency or channel with the numeric keys. For channel, push the [ENTER] knob
to finish.
3. Key in RX frequency and then push the [ENTER] knob to finish.
Note 1: Working TX and RX frequencies in the message can be set to 0.0 kHz to send "no
information" about frequencies.
Note 2: If you enter TX frequency first the same frequency is entered for the RX frequency.
Edit the RX frequency if necessary
Safety or urgency priority
For safety or urgency priority the communication freuqency cannot be selected; it is automatically
set to the pair frequency as set for the DSC frequency.
11. Follow the instructions on the next page to choose DSC frequency desired.