10
NOTE: Transmitting without first connecting an antenna or other matched load may damage
the transceiver. Always connect the antenna to the transceiver before transmitting.
All fixed stations should be equipped with a lightning arrester to reduce the risk of fire,
electric shock, and transceiver damage.
The possible locations of antenna on a car are shown as following:
The transceiver will return to its normal operation when the power is switched ON or
repeat above operation.
Important: The range of displayed voltage is only from 7V to16V DC, because the displayed
value is estimated, please use a voltmeter when a more precise reading is desired.
Antenna Connection
Before operating, install an efficient, 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 50* impedance antenna and low-loss coaxial feed-line that has a characteristic
impedance of 50 *, to match the transceiver input impedance. Coupling the antenna to
the transceiver via feed-lines having an impedance other than 50*reduces the efficiency
of the antenna system and can cause interference to nearby broadcast television receivers,
radio receivers, and other electronic equipment.
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SP-01
Accessories Connections
External Speaker
If you plan to use an external speaker, choose a speaker with an impedance of 8*. The
external speaker jack accepts a 3.5 mm(1/8") mono (2-conductor) plug.
NOTE: External speaker adopt double port BTL, please care about the connecting way.
The speaker can not connect with the ground, otherwise the speaker will be fault. The
wrong connecting way as the following picture.
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