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C. Mounting to the wall
i.
We recommend using appropriate wall
anchors to mount the Mounting Bracket
directly to the wall.
D. Mounting to a wall box
i.
The antenna may also be mounted to a
single or dual gang duplex box, or to a
square or hexagonal junction box.
E. Determine the correct length of the antenna
i. Determine the average of the highest and
lowest frequencies you will use with this
transmitter. (Example: If you are going to
www.phonak-communications.com
use 182.50 MHz and 186.250 MHz then
take the average of 182.50 +186.250 and
then divide by 2=184.375MHz).
ii. Divide 7500 by the average frequency (in
MHz), then subtract 5 from this result. The
solution to this equation is the length in
centimeters to set your radials to.
(Example: 7500/184.375=40.68. 40.68-5=
35.68cm radial length).
iii. Extend the two adjustable length radials to
the calculated length (Example: 40.68
centimeters). Screw the two radials to the
antenna mounting assembly.
iv. Install the antenna mounting assembly in
desired location, preferably high on a wall,
away from any metal objects and with
minimal obstructions between antenna and
location of receivers and orient ground side
downward as indicated on the plastic
housing.
Connecting the Cable
1. Positioning of the coaxial cable
a. The coaxial cable should always run down
the near the ground radial. If the antenna is
inverted, the principle remains the same.
Running the cable near the active radial will
cause interference and diminish the range.
b. Connect the RG 58, 50 Ohm coaxial cable
to the BNC connectors on the antenna and on
the transmitter.
2. Connecting the BNC connectors
a. The BNC is connected by matching up the
pegs on the male connector with the slots on
the female end.
b. Once the two ends have been matched,
push down on the male connector to swivel
the connector until it locks the female.
2
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