Federal Signal Corporation ultravoice UV, Installation, Operation And Service Manual

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Installation
UltraVoice (UV)
Mount Yagi Antenna
See the Figure 14.
To install the Yagi antenna, do the following:
1. Install antenna, (using installation bracket or equivalent) as high as possible in
which the antenna cable and obstacles allow, and install on side of pole closest to
the receiving station. Aim antenna at receiving station.
Install a service loop when routing antenna cable.
NOTE : Objects around the antenna affect the antenna, keep antenna pointed
away from objects.
2. Ensure antenna cable connections are tight. Seal all connection points with heat
shrink or tape and seal with Scotch Coat, or equivalent.
3. Apply RF power to the antenna at the transmit frequency to be used at that
antenna, and check the VSWR (Reflected power). Reflected power must be less
than 10% of the forward power.
4. If the VSWR specification is unattainable, replace the cable (a simple ohmmeter
check of the cable does not guarantee that the antenna cable is good, due to the
DMM not having the ability to check the cable at high frequencies). If that does
not take care of the problem, replace the antenna.
Omni Antenna Installation
The Omni antenna is a fiberglass, no tune model.
See Figure 15.
To install the Omni antenna, do the following:
1. Install antenna, (using installation bracket or equivalent) as high as possible in
which the antenna cable and obstacles allow, and install on side of pole closest to
the receiving station.
Install a service loop when routing antenna cable.
NOTE : Objects around the antenna affect the antenna, keep antenna away from
objects.
2. Ensure antenna cable connections are tight. Seal all connection points with heat
shrink or tape and seal with Scotch Coat, or equivalent.
3. Apply RF power to the antenna at the transmit frequency to be used at that
antenna, and check the VSWR (Reflected power). Reflected power must be less
than 10% of the forward power.