I started with one of those little 1090Mhz tuned mag mount whips and had it mounted indoors on a windowsill. After a while I moved it to a spider made from a coffee tin with the sides cut and bent at 45 degrees. Performance improved a bit. After a load more coffee I moved to the same tin but simply upturned. Performance rocketed up and gave the best results ever for that whip. Here is the summary with photos. I’d be interested in your thoughts on the results I got for no tin vs tin with 45 degree radials vs vertical tin.
