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Optional Components
The following optional components may be necessary for your installation.
Antenna Mast-Mount Kit (#7995)
The hardware provided with the omni-directional antenna enables you
to mount the antenna on the Sensor Mounting Arm. If you want to
mount it on a pole, post, or wall or raise it above the Sensor Mounting
Arm, use the Antenna Mast-Mount Kit.
Note: The antenna should be located as high as possible and away from buildings and other
obstructions, if possible. It is necessary that the path between the field and base station
antennas be completely unobstructed (line-of-sight). Even trees and other vegetation
can reduce the signal intensity.
Short-Range Modem Pair (#7875)
The need for a line-of-sight transmission path may dictate that the base
station antenna be located more than 40' (12 m) from the computer to
which it is connected. The RM should be located near the antenna (a
longer co-axial antenna cable could be used, but this will reduce signal
strength), so it is necessary (in this case) to use the Short-Range Modem
Pair for communication between the RM and the computer.
Radio Surge Protector for Spread-Spectrum and UHF Radio Modems (#7683)
If the RM is located in an area where lightning strikes are a possibility
you should use the Radio Surge Protector to provide surge protection
between the antenna and the RM.
Note: We recommend the use of the Radio Surge Protector in ALL installations.
Repeater
If line-of-sight is not readily available or range is exceeded it may be nec-
essary to install a repeater RM site between the field and base station.
Contact YDI directly for assistance in designing, obtaining, and configur-
ing such a link. The WeatherLink software does not support the use of
repeaters and the supplied configuration program cannot configure
them.
Terminal Box (#7774)
If you need to extend the length of the antenna cable and the connection
is not weather-proof, you may house the connection inside Davis's Ter-
minal Box.
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Spread-Spectrum Radio Modem Installation Kit
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