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up. The plus cable (red) has to be connected to the Plus (+) connection of the power
supply and the black wire with the Minus (-) connection.
Antenna connection
Connect your CB antenna to the ANT socket on the rear side of your ALBRECHT AE 6690. Most
CB antennas must be tuned to best radiation during installation to give highest effective
communication range. CB specialists do that job with a standing wave (SWR) meter to check and
adjust the aerial. Tune the antenna to the best standing wave ratio (SWR) on an intermediate
channel e.g. using Channel 1 in 80/40 mode (26.965 MHz) or Channel 20 (27.205 MHz) in all other
modes. Truckers should prefer CH 9 for optimum alignment.
On this channel you should obtain a SWR of approx. 1.5 or less. If the SWR deteriorates on the
highest (Channel 40) and lowest (Channel 41) channels up to a value of 2.5, then your aerial is
still acceptable. SWR above 3 is too bad for good communication range. A bad SWR may also
indicate that there is perhaps an installation error or missing ground. Problems may be caused
through missing ground, especially in boats and motor homes with fiber glass body. For these
cases, Albrecht offers a special connecting cable with matching box as “artificial ground” (AKM 27),
or ground less antennas like GL 27.
Some antennas, like “Gamma II” are broadbanded and do not need any retuning during
installations.
Even if your AE 6690 has a heavy duty transceiver with a high-level output stage which can
even withstand mismatching of SWR=3, you should still never transmit without an antenna!
Installation instructions of the vehicle manufacturers
European directives allow the car manufacturers to decide, where, or even whether or not private
radio transceivers may be operated in their cars, this is also valid for antenna installations. Please
install Your mobile CB station only in accordance to car manufacturer’s installation instructions.
Legal Information
CE-Marking
This device is provided with the from the R&TTE Directive required identification:
The CE sign means, that this radio achieves the basic requirements of the new
european regulations. The so-called R&TTE Directive displaced all earlier national “type approvals”
in the EU and also regulates the bringing into circulation and the use of radio installations. So the
ownership and the trade with proper labelled devices such as the AE 6690 in the EU and some
other (not EU-) countries, who accept the R&TTE Directive, allowed, while for the use of radio
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