Deon, K6WH ZS1ACP has been having a great time with Software Defined Radios and stealth vertical antennas in San Diego. His blog site has this great shot of what the band (was it 40?) looked like at the moment that Field Day ended. Check out Deon’s blog:
http://capesafari.com/hamradio/SDR/SoftRockLite.html

Hey Bill This was a very interesting observation This snapshot shows the 20m band 14.0 – 14.1MHz