>> Have you given any thought to using one or more low powered
>> transmitters in the "active" area?  You could adjust the output

>That's a possibilty. Flood the area within the perimeter instead
>of just at the perimeter itself

Check out the archive for comments I made some time back on setting up a hearing
loop for use with hearing aids in a building. What is being proposed here is a
variation on that. By my experience the coverage outside the loop could be about
the linear distance from the centre of the loop to the loop, i.e. your total
coverage could be about 2 loop radii.

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