Using the 9350 Automatic Tuning Whip Antenna with a 2110 Manpack Transceiver
Manpack Transceiver 2110 series Reference Manual 51
Power supply factors
Voltage drop
The most common causes of voltage drop along a cable are:
• the diameter of the wire is too thin
• the length of the cable is too long
The average current consumption of a transceiver is low except during transmission of
voice and data peaks, where high current is needed for short intervals. The power supply
cable needs to be sufficiently heavy to supply these current peaks without excessive
voltage drop.
Incorrect wiring techniques, including poor choice of connection points and incorrect use
of terminal lugs, can also cause a voltage drop.
Fuse protection (vehicle battery supply only)
An external fuse must be fitted in the active wire as close as possible to the battery to
ensure there is no risk of fire if the cable is damaged. The fuse must be of a type that has
a low voltage drop at peak currents (see page 54, Protecting the cables).
Noise interference
The transceiver has noise-rejection circuitry and, provided correct power cable
connection and routing are established, noise interference via the power cable is kept to a
minimum (see page 53, Connecting the vehicle battery supply).
NOTE A 32 A cartridge fuse (Codan part number 15-00711) is recommended.
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