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English
interferences from ignition and alternator as well as the most stable operating
voltage.
In case the in-line fuse in the DC cable blows, check the possible cause first (mostly
reverse polarity and a protective diode has kicked in) and replace the fuse only with
the same type (10A, American glass fuse).
Connect the red cable to the + terminal and the black cable to the – terminal of
the power source.
4.4
Antenna Connection
The transceiver will operate using any standard 50-ohm ground-plane, vertical,
mobile whip, long wire or similar antenna. The antenna should be rated at 50 watts
PEP minimum. A standard SO-239 type connector is provided on the rear panel of
the transceiver. Connection is made using a PL-259 and high grade coaxial cable
(RG213 or RG58A/U is recommended). A ground-plane antenna provides greater
coverage and is recommended for fixed station-to-mobile operation. For point-to-
point base station operation, a directional beam antenna operates at greater
distances even under adverse conditions. A non-directional antenna should be used
in a mobile installation; a vertical whip is best suited for this purpose. The base
loaded whip antenna normally provides effective communications.
For greater range and more reliable operation, a full quarter wave whip may be used.
Either of these antennas use the metal vehicle body as a ground plane.
4.5
SWR Adjustment of the Antenna
After you have determined that the installation is correct and the radio is operational,
it is important to determine the antenna system’s SWR (Standing Wave Ratio). Prior
to taking any measurements make
sure the SWR bridge (meter) is in good working condition and is calibrated. To
ensure your radio is performing properly the SWR should never exceed 1.5 to 1. This
is critical due to the high level of gain developed in the RF deck. Never transmit on
any antenna system where the SWR exceeds 1.8 to 1. This will stress the output
stage and could destroy the RF transistors; this type of misuse and failure is not
covered under warranty.
4.6
Country Code Setting
Every time the AE7500 is switched on, ‘
HELLO
’ is displayed, then the country code is
shown, for a few seconds..
Description of all country codes
d4
Germany 80 channels FM 4 Watts, 40 channels AM 4 Watt, 40
channels SSB 12 Watts, also for CZ and SK
E
Europe according to new CEPT regulation with 40 channels FM 4
Watts, 40 channels AM 4 Watts und 40 channels SSB (12 Watts)
PL
Poland with 40 channels FM 4 Watts, AM 4 Watts and SSB 12 Watts
with Offset = 0 kHz
U
UK with 40 UK channels and 40 international channels, FM, 4 Watts,
no AM, no SSB
U5
USA, as E, setting for countries not using FM, but only AM and SSB.
Can also be used in Europe (in countries, where
E
is allowed)