wrote in message
...
Lets be silly. Take a commercial yagi TV aerial, take a strip of
cardboard, and make a full size copy of the layout using bits of 2.5mm
T&E cable for the elements, and the cardboard to replace the spine.

How well would it work?

See
http://www.wrightsaerials.tv/homemade2.htm
http://www.wrightsaerials.tv/homemade3.htm

Bill