Wireless Basics 4: Concerns

There is a concern from some about possible damage from the radio signal to children. As with all these things, we can't say there is absolutely no danger to anyone ever. What we can say is:

• The signal at the antenna is 100mW, which is one tenth of that of a mobile phone at its aerial.
• You are unlikely to put your head against the antenna, bringing the Inverse Square Law into play to reduce the signal strength above.
• The maximum transmission range in a vacuum is 300m. It isn't a strong signal.
• Terry Wogan works in an environment with a much stronger radio signal, and has done for a few years. He seems okay, although this is not a qualitative test.