Importance Of The Fuse In The Power Cable; 230V Operation Via Power Adaptor - Albrecht AE 6790 Operación Manual

or transmission noise by ignition or alternator. In case persistent noise from the onboard network
cannot be resolved, have the service install our DC noise filter (order no. 70600).
To automatically turn off the radio when turning off the ignition, connect to the switched voltage at
the ignition switch. Our AE 6790 features continuous Flash EEPROM memory of the last setting
and starts with the setting used last upon turning on the ignition again.
The last setting is not deleted, even if the radio is disconnected from power supply for a longer
period of time.
Radio ground connection (negative):
Connect the black cable to the negative battery terminal or to a proper GND point on the engine
lock or a central GND connector in the vehicle. Avoid ground connection via self-tapping screws to
the bodywork. This is not a robust connection and frequently causes malfunction.

Importance of the Fuse in the Power Cable

The in-line fuse protects your radio from serious damage due to technical defects or incorrect
connection. A fuse does not blow without reason. In most cases this is due to incorrect polarity and
the internal protective diode has responded.
During a short circuit inside the device the fuse blows to prevent serious damage.
Determine and eliminate the cause if a fuse blows, then exchange the fuse with a similar one (use
fuses up to 5A).
Never repair a blown fuse with silver paper or tin foil! Return your radio to your dealer or an
authorized service partner in case the fuse blows repeatedly.
Notes Especially for Truck and RV Drivers
The permissible operating voltage of the radio can vary, according to the standard, between 10.8
and 15.6V, without the radio's performance values changing. The transmission stages of your AE
6790 are electronically stabilized. Output increase by excessive operating voltage is thus
impossible. This can only lead to serious defects, but not to output increase! Truckers must ensure
never to connect the radio directly to 24V. For 24V a suitable voltage converter 24V to 12V is
necessary. Since trucks mostly have voltage converters already installed for other devices such as
mobile phone, TV, car radio the power consumption of the CB radio should be calculated with
approx. 1.5 to 2A. Although especially compact and low-loss switching converters with CE mark
are interference-suppressed according to EU regulations for "normal" vehicle electric consumers
such as car radios, cooler boxes or coffee machines, this frequently is not sufficient for
undisturbed CB reception, since CB radios feature highly sensitive receivers. We cannot
guarantee flawless CB reception during switching converter operation and in vehicles with board
computers.
Problems cannot be avoided in all cases without trials. It is also important that the aerial is located
as far away from other aerials and from the converter wiring as possible and has a good grounding
surface. Contrary to mobile phone and car radio antennas conventional CB aerials cannot be
installed on plastic surfaces, unless a metal foil is at the bottom side. Ground connection is
especially important for CB radios. In case the truck still has a metal mirror holder, the foot can be
attached here with an angle mount, but not e.g. on a pure GRP roof or GRP spoiler. If the antenna
cannot be installed on a conductive surface, our floating ground CB mobile antennas such as GL
27 are available.

230V Operation via Power Adaptor

In case you operate your radio at home, use a specially stabilized CB radio power adaptor to
supply at least 1.5-2A at 12-13.8VDC. A suitable power adaptor is the Albrecht order no. 4744.
Non-stabilized power adaptors, battery chargers or popular cooler box adaptors are not suitable for
CB radio and should not be used. Switching power adaptors can only be used in connection with
an external antenna for CB radio, which does not receive the interferences of these power
adaptors. Connect the positive cable (red) to the positive terminal (+) of the power adaptor, the
black cable to the negative terminal (-) of the power adaptor.
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