MODEL 5351R/D : Receiver/Decoder
The Model 5351R/D Receiver/Decoder receives ALERT data transmissions from remote
sites and provides an RS232 output for the central site computer. The Receiver and
Decoder are housed in separate enclosures, which allows the Receiver to be located
near the antenna tower and the Decoder to be placed at the central site computer.
Locating the Receiver at the antenna tower reduces the length of the RF transmission
line and the associated RF signal loss, and eliminates the potential damage due to
lightning entering the central site on the RF transmission line. The Receiver’s antenna
connection is also a lightning protection device; to be effective, the supplied ground
lug should be attached to the antenna tower’s earth ground.
Equipment supplied with the unit includes the Receiver to the Decoder cable (25'),
the Decoder to the central site computer cable (6'), 12 Vdc Battery and Charger, and AC power cord.
During power outages the Battery supplies power to the Receiver; to eliminate the
loss of data, HydroLynx recommends that the Decoder’s AC power cord be plugged into
the central site’s UPS (Un-interruptible Power Supply).
HydroLynx recommends the use of a high gain omni antenna at the central site receive
tower to increase radio path fade margins. Antenna and RF transmission line cables
are ordered separately (refer to the Antenna and Antenna Cable Sections).