|Leaky Feeder System
VHF - UHF - EXia
Leaky feeder radio communications have become the most reliable
and efficient means for communicating within mines and tunnels.
As a transparent form of communication, from radio to radio, telephone to radio, data modern equipment to PC, the Sigma
Communication Systems range of leaky feeder systems offers fully
flexible options to suit your particularity operation.
VHF Line Amplifier
SCS1000 Series VHF SMARTTune Automatic Line Length
Compensation In-Line Amplifier. The VSTLAD SMARTTune is a
quantum step forward in amplifier design, offering a very SMART
attenuator, which means that you can literally install SMARTTune
amplifiers anywhere in the leaky feeder cable and the amplifier will
set its gain according to the level of input signal received from the
previous amplifier. As all amplifiers include AGC in the common
path, the level of output signal in the Base TX direction will be
constant. This constant output of power is used by the next amplifier
in the system as a measure of the gain required. If the cable is longer,
then more gain will be applied etc. Voice and Data capable and is
packaged in an IP66 heavy duty enclosure. The amplifier is powered
from leaky feeder cable; no special tools are required to splice it into
the leaky feeder cable.