Mac Tabak wrote:

I know a few have suggested discones....but they are really for
horizontalradiation, you need vertical polarisation for police.
Try a 1/2 wave dipole, easy to make.

Um, discone *is* vertical.

Page 7-29 ARRL Antenna Book, 20th Ed.
--
"One ought, every day at least, to hear a little song, read a good poem,
see a fine picture, and, if it were possible, to speak a few reasonable
words." - Johann Wolfgang von Goethe