ASC (Automatic Squelch Control) (2)
The ASC function is a patented function elaborated by the President
Electronics SA France group. This function evaluates the so-called
signal-to-noise ratio (ratio between the useful signal and the inter-
fering signal). The useful signal is only forwarded to the loudspeaker,
if it is worth being received, i.e. it is almost free from noise. Thus,
a permanent readjustment, as for the squelch function depending
on the field strength, is not necessary. This is of benefit to a safe
participation in the street traffic when driving. The ASC function
can be used for AM and FM mode and is activated if the squelch
control is set to the leftmost position.
RF Gain control (3)
With the AM type of modulation, the signal can be distorted, if the
signal level (S value) is too high. In this case, use the RF Gain
control to reduce the amplification.
Type of modulation (7)
Using the adjustments 40/40 and 80/80 you can either operate
your radio set in FM or in AM modulation. The decision, which of
both types of modulation is your preferred one, depends on your
radio contact partners and on your requirements. However, please
keep the compulsory registration for AM mode in mind which
applies in many countries!
Generally speaking, frequency-modulated signals (FM) are less
sensitive to interferences resulting from the ignition system etc.
than amplitude-modulated signals (AM). If your loudspeaker emits
an unintelligible, distorted signal, you should try receiving the signal
using a different type of modulation.
For changing the type of modulation, actuate the left of the three
available sliding switches (AM/FM).
Channel 19 (8)
Channel 19 is automatically selected when you activate this switch.
To activate this function, move the switch to CH19 position, and
to return to the previous channel move the same switch to OFF
position.
Signal intensity (5)
A bar display can be seen to the left next to the channel display.
During reception, this display shows the signal strength in S-grades.
The S-grades 2, 5, 7 and 9 are indicated. Values above S9, 9+10
and even higher are indicated as S9. In this case, the received
signals are very intensive and are transmitted by an adjacent radio
station.
Transmission
For transmitting, you just have to press the push-to talk button
on the left side of your microphone and to speak with normal voice
level into the microphone. Dont speak to loud such that the sound
of your voice is natural for your radio contact partner. We recom-
mend you to test this and to ask for a modulation report afterwards.
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