- 3 -
1. Select Frequency
The transceiver operates in one of three modes.
Using the G button you may select between VCO
and Memory mode. The third mode is the
Priority Channel which may be switched on and
off with the F key.
VCO mode
In VCO mode any frequency that complies with
the selected step size (4) may be entered using
the number keys on the keypad. The transceiver
automatically rounds off the frequency to a valid
entry. For example, of you want to listen at
435.012.500 MHz, at a step size of 12.5 kHz, all
you need to do is enter ‘501’:
435.---.--- → 435.0--.--- → 435.012.500
If a step size of 25kHz is used, entering '501' will
cause the transceiver to round off to 435.000.000.
Memory mode
Starting from VCO mode up to 100 preset
frequencies per bank may be stored in memory,
see Heading 5. These frequencies may be
selected when in Memory mode while it is also
possible to assign names to channel frequencies.
If no frequency has been assigned to the selected
channel the transceiver produces an error beep
and ignores the number entered.
Priority Channel mode
Provided a frequency has been assigned to the
Priority Channel (see Heading 6), this feature
allows you to change to this frequency at the flick
of a switch. The Calling Channel may be instantly
selected by pressing the F key.
2. Select CTCSS tone
It may be undesirable for every transmission to be
heard on a certain frequency. A system called
CTCSS is therefore used to pass only those
transmissions containing a sub-audible tone of a
specific frequency. In the receiver a CTCSS
decoder is used to open the squelch and make
the transmission (speech) audible when a valid
CTCSS tone is detected.
The frequency of the CTCSS tone may be
selected as follows:
Display:
- Press H ( Select Function )
- Press 3 ( TX CT: **)
The lowest frequency is 67.0 Hz, the highest,
250.3 Hz. The quasi-value 'None' is available to
disable CTCSS. Separate CTCSS frequencies
may be used for TX and RX
3. Tone squelch
The squelch may be remain closed until a valid
ZVEI 5-tone code is received. It is also possible to
transmit a ZVEI 5-tone sequence at the start of
every transmission.
Activate:
The tone squelch is activated by pressing the E
key. When receiving, the yellow LED lights. When
transmitting, the symbol 'T' appears behind the
frequency.
Adjust:
The code may be set as follows:
Display:
- Press H ( Select Function )
- Press E ( RX: )
Now set the tone for the squelch. The tone code
has to be entered using the number keys. If a
number flashes, this indicates a DTMF tone.
- Press H ( TX: )
Now set the tone to be transmitted.
1750 Hz tone burst
A tone burst is transmitted by pressing the PTT
and Squelch Defeat buttons at the same time.
The frequency of the tone burst may be adjusted
in the Audio menu.
4. Select Step Size
Display:
- Press H ( Select Function )
- Press 8 ( Step size: ** )
The desired step size is selected by pressing the
0 and # keys (← or →). Confirm your selection by
pressing any other key.
5. Store favourite channels
Up to 100 favourite channels per bank may be
pre-set in the transceiver. A channel is stored as
follows:
Display:
- Select VCO mode (43*.***.*** )
- Enter the desired frequency and choose
SHIFT and/or CTCSS if required
- Press H (Select Function )
- Press G (Store in: xx)
- Select a number, if number has an arrow
in front of it, it has been taken for another
frequency. This is replaced.
(Store in: xx)
- Press H
- If desired, give the channel a name.
(Name: )
See Heading 10 for text entry.
- Press H again