Albrecht AE 6190 HD -X, Руководство по эксплуатации, Страница: 10 / 16

10
10
Adjusting squelch (muting)
Particularly in FM, noise can be a nuisance on a free channel. With the muting
control (
SQ , Squelch) You can suppress this noise - but also signals which are too
weak to be received properly.
This is how to adjust the signal strength required to switch on the loudspeaker, using
the
SQ control knob:
The further the control knob is turned to the right, the stronger a signal has to be in
order to be audible through the loudspeaker.
In order to adjust the set to be the most sensitive to incoming signals, switch to a free
channel:
•
Use the UP / DN switches to find a free channel, where no signal is
displayed.
•
Then turn the squelch control SQ carefully to the right until the noise just
about disappears.
Now the loudspeaker stays off when on a free channel but it switches back on when
receiving even very weak signals.
The muting adjustment is particularly important during channel
scanning. In this mode the point to which the set is adjusted
decides whether scanning is stopped at the signal or not.
Therefore you should test the various muting settings for various
signal strengths and get to know this function.
AM / FM mode switch
In the German channel system 80/40 you can now receive on all 80 channels in FM
and AM, but you can transmit on all these channels only in FM.
In AM the only channels 1-40 are enabled for transmitting. If you should try to
transmit in AM on other channels, the LED will blink to warn you.
Transmission on such channels is technically deactivated. A green control LED is on
during FM mode.
Special interest channels
There are a few channels which have been established for certain purposes:
Channel 1 Call channel in FM (Germany only)
Channel 9 Call and emergency channel , in Germany particularly this
channel is also used by all truck drivers in AM.
This means: a large number of stations are listening in. If
the worst comes to the worst (e.g. in case of accident etc.)
there is a good chance that someone will be listening.
To call other stations, who you know are listening in on channel 9, you can also use
this channel. Call up the desired station on channel 9. As soon as contact has been