I went to http://transition.fcc.gov/mb/audio/bickel/figure8.html to try to make a few calculations, and even though I put in a frequency and other data within the range, it gives me an error saying I entered 0.00 for the frequency. It was also like this several days ago when I tried, but was working fine a couple months ago. Anyone know what's going on, and if it's going to still be down later this afternoon is there an alternate calculator I could use for those calculations?