Antenna
General specifications for the supplied antenna are shown in the table
below.
Neptune P/N
12896-001
Andrew P/N
DB636-C
Frequency Range
450-482MHz
Maximum Input Power (Watts)
500
Gain
6 dB
Bandwidth > 1.5VSWR
32 MHz
Vertical Bean Width (-3 db)
20 Degrees
Lightning Protection
Direct Ground
Termination
N Female
Overall Length
9.3 Feet
Element Housing Length
6.8 Feet
Support Pipe Diameter
2.5 inches
Support Pipe Length
26 Inches
Wind Load
1.61 Square Feet
Rated Wind Velocity
225 MPH
Weight
30 lbs
Mounting Hardware Included
DB365 Clamps
Requirements
l
The antenna, if mounted on the side of a tower or other supporting
structure, must be mounted so that it is at least five feet away from
the structure. The components to offset the antenna are specific to
the installation and are not included by Neptune with the R450 DC
package.
l
The antenna is large and care must be taken when hoisting it up a
tower so that it is not damaged.
l
The feed line should not be attached to the antenna while it is
being hoisted up the tower or other supporting structure. The feed
line should be attached after the antenna is in place.
l
There have been reports of damage to the antenna's N connector
where the center pin has become bent and shorts out the antenna
system. Care must be taken not to damage the connector.
R450 Data Collector Installation and Maintenance Guide
89
Appendix A: RF Antenna Installation
Summary of Contents for R450
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