ACOUSTIC SOLUTIONS CDAB-1 Instruction Manual page 9

FIXING THE ANTENNA
As with any radio receiver, the quality of the output signal will be directly
determined by the strength of the input signal that it receives.
Obviously the location of the tuner in relation to the transmitter will have a
direct influence on the quality of the available signal, however it is important
to provide the best possible antenna to the tuner to provide the best signal
conditions possible.
We have provided with this DAB tuner a simple wire antenna which is
designed for internal use. Please see the following diagram for correct
installation procedure:
ANTENNA ADVICE
It is possible to display the signal strength as a bar graph on the LCD
display by pressing the info button several times, this will show the following
window:
The signal strength is determined by the number of bars which are
illuminated towards the right , the stronger the signal, the more bars that will
be filled.
It is possible to adjust the signal strength by changing the position of the
antenna, and by using the visual bar graph display it is possible to position
the antenna for maximum signal strength.
CDAB-1
Further enhancements can be made to the reception quality by purchasing
a better quality aerial, available from most hi-fi retailers. For best reception,
we would recommend an external or loft mounted DAB/FM antenna. There
are two main types available, a) Dipole, b) 4-element aerial.
DIPOLE
For use in marginal signal areas, this type of antenna is omnidirectional and
should increase the strength of all DAB stations being received.
4-ELEMENT AERIAL
Also for use in marginal or poor signal areas. This type is directional and
has a high gain. Like a TV or FM aerial, this type of antenna needs to point
at a transmitter. Installation requires someone to move the aerial whilst
you monitor the signal strength. If you can receive signals from multiple
transmitters you should point your aerial at the one which gives you the best
signal for the services which you want to listen to.
It is possible to use a TV or FM aerial with your DAB tuner as this is
normally mounted externally. This may give a stronger signal than a simple
internal aerial, however it would not be tuned specifically for DAB reception.
You would need to change the plug on your TV/FM aerial to an 'F' type
connector, and it may also be necessary to use a signal booster to enhance
the signal.
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