U-Know-Who wrote:
3' X 3', huh Brian? At 27Mhz? Is this some sort of magic sheetmetal with
superior RF characteristics you've patented? Glad to see you are not
building antennas.

That size piece of metal should work just fine... how big do you think
the roof of your car is where it normally sits... not much bigger.

www.telstar-electronics.com