Javad HPT435BT JL User Manual page 9

antenna, add a UHF Antenna Ground Plane Disk (p/n 10-587400-
01) to the bottom of the antenna for a ground plane. UHF antenna
Ground Plane disk improves VSWR and as result increase RF power
delivered from transmitter to antenna and system distance range.
To install antenna with ground plane disc (see pictures below):
• Unscrew the cone-shaped cable part;
• Place the ground plane disc between cable parts and screw all
parts together;
• Attach cable with ground plane to the UHF antenna;
• Place the antenna on the pole.
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Use coaxial cable and connectors that are impedance-matched with the
radio equipment, and make sure to use the shortest length of cable to
move the signal between the radio and the antenna:
• UHF Ant Cable TNC/Pole Mount, 12ft
• UHF Ant Cable TNC/Magn Mount, 12f
• UHF Ant Cable TNC/Mini-Magn Mount, 12ft
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