What is the range of the wireless transmission?
The range of transmission depends on the environment between the transmitter and receiver.
Think of the transmitter as a talker, that's all they do is talk, they don't listen. The receiver is a listener, it is always waiting for the next telegram from the transmitter. When planning the location of the transmitters and receivers it's important to understand that the radio telgram has to pass through air and other materials that exist between the two devices. The higher the materials density, the harder it is for the telegram to pass through taking up more of its energy. This is why metal does not play nice with radio transmissions. Air is not dense so transmission range is best in line-of-sight open air applications, usually 200 to 300 meters is achievable.
Inside commercial office space,the obstacles become wallboard walls, elevators, fire doors, concrete walls. and other construction materials.
For interior space range planning purposes, use a 30 m distance between a transmitter and receiver or 5 wall board walls as a guideline.
Pay attention to how a radio transmission path is intended to pass through obstacles. A wall is thinner when the transmission passes through on a perpendicular plane to the wall. If the signal must pass through at a angle, then there is more material to penetrate through using up more transmission energy and reducing the range.
| Attachment | Size |
|---|---|
| programming-range planning.ppt | 251 KB |
| Reliable Range Planning.pdf | 329.78 KB |
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