Unclassified
Installation Procedure
3-3
3.6 ANTENNA SYSTEM
Antenna systems are selected in accordance with the specific communication requirements
of each customer: many HF antenna types are available, each providing different radiation
characteristics to meet different communication requirements. Therefore, the selection and
installation of an antenna system is the customer’s responsibility. If necessary, contact
manufacturer or your local representative for additional information.
The antenna system must provide a matched termination at the operating frequency, and
must be capable of handling the maximum power output of the RM500/RM500R.
3.6.1 ANTENNA FEED SYSTEM
The antenna feed system comprises any cables, panels and matrices, and any accessories
that carry HF signals between the RM500/RM500R and the antenna itself.
All antenna feed system components, and in particular the feed cable, must have low loss
and be capable of carrying the maximum power output of the RM500/RM500R.
Remember that any power loss along the cable is signal loss!
To protect yourself and the radio equipment against lightning strokes and accidental
contact of antenna and/or feed cable with high voltage lines, a properly grounded coaxial
protector must be installed at the point of entry of the feed cable into the building or
communication shelter. The recommended protector type is IS-B50LN-C0 by PolyPhaser
Corp. (also available from the manufacturer, as Cat. No. 2072 09128-00).
3.7 PREPARATIONS FOR INSTALLATION
Before starting the installation of a new RM500/RM500R, review the installation plan and
make the following checks:
a. Identify the prescribed location of the equipment in the rack or cabinet, and check the
mounting surface, and the mounting holes. Thoroughly clean the mounting surface
and remove all paint, grease and dirt from the holes to provide a better grounding
connection.
b. Check availability of AC power, and grounding arrangements.
c. Check antenna installation, in accordance with the antenna installation and operation
manual.
d. Check the cable runs between the RM500/RM500R and the prescribed antenna,
including the coaxial protector. Make sure that the cables are securely fastened, and
do not show signs of external damage.
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