This topic has been talked to death but I'll make one more mention of the old 800MHZ trunk lip mount antenna I attached to a 4" square electrical box cover, soldered 4 3" copper wire radials to and mounted outdoors on an angle bracket.
Found this post of yours back in 2007 and it caught my attention. Just to clarify, that this is describing a home-made antenna? If so, do you have a pic and also how do you connect the cable from it to your radio/scanner?