Power Supply; Vehicle Power Connection; Importance Of The Fuse In The Power Cable - Albrecht AE 6891 Guide D'utilisation

Power Supply

Power supply via the 2-pole plug-in cable, which is equipped with in-line fuse holder. Operate
the radio in vehicles (12V) or as base station via suitable 12V power adaptor (at least 2A,
stabilized).

Vehicle Power Connection

Connect the red power cable to the positive terminal (i.e. a point within the vehicle wiring
with 12V supply power) and the black cable to the negative terminal.
We strongly recommend connecting the radio directly to the battery. Generally direct
connection supplies the most stable operating voltage and optimum protection against
interferences during reception and transmitter modulation.
Modern vehicle wiring is so complex that connecting to other points (such as car radio
terminals or cigar lighter) can lead to interferences. These can be heard as "singing" or
crackling during reception, in some persistent cases also during transmission as "alternator
noise".
If you cannot connect directly to the battery, as recommended, try the best possible
connecting point before final installation. Start the engine to check if the selected connection
causes reception 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 6891 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 6891 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
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