User's Manual

22
5
Advanced Operations
6. Repeat steps from 1 to 4, and press the key in
the state of step 4.
After "XX" is displayed, press the key again to display
. With the OFF state, press the PTT key or leave 5 seconds
as it is to release the Tone Squelch function.
7. While "XX" is displayed on the LCD, press the PTT key
or leave 5 seconds as it is to perform the Reverse
Tone Squelch.
To release the Reverse Tone Squelch function, press the PTT
key or leave 5 seconds as it is while "XX" is displayed. is
displayed on the LCD indicating the function is now released.
The Reverse Tone Squelch ("XX" is displayed on the LCD when
it is set) is a function to mute (close) squelch only when the DJ-
C7 receives frequency matched to the programmed encoder
frequency.
And it unmutes (opens) squelch when the DJ-C7 receives
frequency unmatched to the programmed encoder frequency.
This function is not generally used in ham radio. However, when
you set a tone which is used in wide-band communications
between range of 450 to 453 MHz and which continues to
transmit signals all the time, only a voice will be heard and a
grating noise will be cut off.
5.6 Tone Scan
This function detects tone frequencies automatically on a
receiving radio wave.
1. In VFO mode, rotate the dial to adjust to a frequency
on which a tone signal is transmitted.
2. While holding the key down, rotate the dial to
display "tonE" on the LCD.
3. Release the key.
Tone Scan function will be performed. Tone frequencies are
displayed on the LCD constantly.
Once the DJ-C7 finds a tone, a beep sounds and Tone Scan
function stops.
The found tone is programmed as a decoder frequency
automatically.
4. Press the key to return to the VFO mode.
This function continues searching a tone until it detects one.
Press the same key to quit or suspend temporarily.
5.7 Shift / Split Function
This function is usually used when you communicate via a
repeater station in ham radio.
Shift function:
It functions to shift a transmitting frequency from a receiving
frequency.
Split function:
It functions to receive signals in the VFO mode and to transmit
signals in the Memory mode, or vise versa.
1. Press the key. Everytime you press the key
while the F icon appears on the LCD, a display
indication will be changed as follows.
Caution
When a transmitting frequency turns to be the one on the
prohibited transmitting frequency band after the Shift / Split
function is set, " " is displayed on the LCD. If so, you
are not allowed to transmit any signals.
Shift frequency -> Shift frequency -> Shift frequency -> "SPLit"
"+" "-" "+/-"