Monitor The Vhf Air Band In The Channel Scope Mode - AOR SDU5600 Operating Manual

Section 6-4

6-4 Monitor the VHF air band in the channel scope mode.

The VHF airband is allocated over the wide frequency band, It is therefore impossible to display the
entire VHF airband on the SDU5600 at once. The channel scope mode however provides a very
convenient method of monitoring the channelised frequency band through the use of both the marker
and receive marker. Using this method, you can split the airband into small sections for quick
inspection.
Change of the monitoring mode
To change to Channel Scope mode press FUNC + 3 (CHANL). The LCD legend OP.MODE:Channel confirms that
channel scope mode has been engaged.
The LCD legend above [Ch.START] will display a frequency in revers contrast, this
is inviting you to key in a new start frequency via the ten-keys.
Enter a start frequency of 118MHz, if you make a mistake, press CLR to return to
the start entry position.
The LCD entry point will move to [Ch.STEP], enter a step frequency of 25kHz
The LCD entry point will move to [Ch. END], enter an end frequency of 122MHz
Note, the end frequency is always restricted under the rules:
Any incorrect entry of the end frequency will be alerted with the beep, and it will be automatically corrected to the
nearest possible frequency.
Upon the successful entry of the end frequency the companion receiver will commence receiving on the start
frequency. Change the receive mode to AM for air band if required (or use AUTO mode), use the MODE key, main
dial or SDU5600 and MHz key.
Rotate the main dial, which moves the marker
sideways. The receive marker legend appears
(yellow outline triangle on the LCD) to indicate the
frequency which the companion receiver is actually
receiving.
Press the MK.F key to move the receive marker to
the marker position, this will move the companion
receive to the new frequency where monitoring will
continue.
East time you press the MK.F key, the companion
receiver will shift to the marker position, as you move
the marker by rotating the SDU5600 main dial, two
markers will be displayed on the LCD. You can
change the parameters at any time by pressing the
corresponding soft key under the LCD.
36
(CH.START) + [(CH.STEP) x 160]
and
(CH.START) + 5MHz