8
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Transmitting without first connecting an antenna or other
matched load may damage the transceiver. Always connect the
antenna to the transceiver before transmitting.
»
All xed stations should be equipped with a lightning arrester to
reduce the risk of re, electric shock, and transceiver damage.
3.5 Antenna Connection
3.6 Accessories Connections
Before operating, install an efcient, well-tuned antenna. The success
of your installation will depend largely on the type of antenna and its
correct installation. The transceiver can give excellent results if the
antenna system and its installation are given careful attention.
Use a 50Ω impedance antenna and low-loss coaxial feed-line that
has a characteristic impedance of 50Ω, to match the transceiver
input impedance. Coupling the antenna to the transceiver via feed-
lines having an impedance other than 50Ω reduces the efciency of
the antenna system and can cause interference to nearby broadcast
television receivers, radio receivers, and other electronic equipment.
The possible locations of antenna on a car are shown as following:
External Speaker
If you plan to use an external speaker, choose a speaker with an
impedance of 8Ω. The external speaker jack accepts a 3.5mm (1/8")
mono (2-conductor) plug.
EX
T
S
P
A
N
T
MS120
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