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19
Channel selection
Use the up/down keys to adjust the channel you wish to use for
receiving/transmitting.
Note: While keeping pressed the F key the corresponding frequency
will be displayed.
Choosing the type of modulation (AM/FM)
Using the adjustments 40/40 and 80/40 you can either operate
your radio set in FM or in AM modulation. The decision, which
type of modulation is your preferred one, depends on your radio
contact partners and on your and/or the legal requirements.
If your loudspeaker emits an unintelligible, distorted signal, you
should try receiving the signal using a different type of modulation.
You can change the type of modulation by pressing the A/F key.
Transmitting (Attention: Never transmit without having an
antenna connected!)
Before starting the transmission, listen to make sure that the
channel is free and that there is no doubling with a different radio
station! Please note that the radio station needs a certain time to
carry out its start-up sequence: Thus, you should wait for a second
before speaking.
For transmitting, you just have to press the PTT key (push-to talk
button) on the left side of your radio set and to speak with normal
voice level into the microphone while holding the key pressed,
is displayed. Dont speak too loud such that the sound of your
voice is natural for your radio contact partner. (Simply give it a
try and ask for a modulation report afterwards).
Reception
When the radio set is switched on, it is ready-to-receive (unless
the set is transmitting).
If a signal is received on the adjusted channel, the display shows
and .
Squelch
Each radio set features a function for noise suppression (squelch)
suppressing the reproduction, if the signal is lacking or too weak.
The signal level at which the function is activated is adjusted in
the menu. You can select between 6 levels.
ASC (Automatic Squelch Control)
The ASC function is a patented function elaborated by the Group
President Electronics SA/France. This function evaluates the so-
called signal-to-noise ratio (ratio between the useful signal and
the interfering signal). The useful signal is only forwarded to the
loudspeaker, if it is worth being received, i.e. it is almost free from
noise. The ASC is always active in the squelch levels 1-6.
Dual Watch
The dual watch function enables you to be ready-to-receive on
two channels: The radio set automatically changes from the current
channel to the priority channel and checks whether a signal is
present on this channel.
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