DAVIS 7627 Installation Manual download pdf (Page 7)

Wireless Repeater Introduction

The wireless repeater extends the range of a Davis Instruments weather station network

and can help overcome obstruction or interference problems present in a given network.

The transmission distance between a station and a receiver (known as radio-link range)

can be impaired by walls or other objects. When planning to use repeater(s) to lengthen

transmission distance from a station to a receiver keep the following information in mind:

•The typical radio-link range of all Vantage Pro2 stations and repeaters (models #7626,

#7627 only) is:

•Line of sight: 1000' (300 m).

•Under most conditions (some visibility but small obstructions): 500 - 800' (150 -

250 m).

•Through Walls/Around Large Obstructions: 200 - 400' (60 - 120 m).

•The range for a standard wireless repeater has the same range limitations as all Vantage

Pro2 stations.

There are many things that can affect radio-link range and performance, and they should

also be considered when planning a network. They fall into two categories, obstructions,

and interference.

•Obstructions — These can include but are not limited to: walls, structures, rocks, land,

trees, foliage, any metal including mounting poles, fences, etc. For example, your con-

sole or Envoy receiver will most likely be indoors. That means that there is one or more

walls between the receiver and the station(s) it is listening to. Depending on the number

and construction of these walls, the radio-link range can easily be reduced to only a few

hundred feet. While land (terrain) will completely block radio signals, other items like

trees and foliage will only reduce the radio-link range. Wet or snow covered trees, foli-

age or walls will further reduce radio-link range.

•Interference — This can include: cordless phones, baby monitors, cell phones, cell

towers, ham radios, or any high-powered transmitter nearby. This can reduce the range,

because the radio can only receive what it can decipher over other transmissions.

Antenna height can also affect radio-link range. Generally, the higher the better. Mount-

ing the radio/antenna as high as possible will not only get better radio-link range, but it

will be more likely to create a line-of-sight over some obstructions.

By placing repeaters between station transmitters and your receiver, you can increase the

range of your weather station network, keeping in mind the limitations discussed here.

You can go around obstructions, extend line-of-sight distances, or increase the signal

strength in noisy environments by placing radios closer together.

Note: Even longer line-of-sight distances can be achieved with the Long-Range Wireless Repeaters #7653,

#7654. See our website at www.davisnet.com for more about our Long-Range Wireless Repeaters.

1 2 3 4 5 6 7 8 9 10 11 12 ... 47 48

No comments

DAVIS 7627 Installation Manual Page 7