[aprssig] APRS Desert?

[Stephen H. Smith]

  On 8/27/2010 6:52 AM, Lynn W. Deffenbaugh (Mr) wrote:
> You can get an idea of APRS activity all over North America at:
>
> http://tinyurl.com/APRSAct24
> and
> http://tinyurl.com/APRSAct00
>
> The new stuff is at the bottom, but I see it hasn't updated since the 22nd, 
> so I'll get that batch job restarted.
>

Wow! 
<http://ldeffenb.dnsalias.net.nyud.net/Tracking/Act00/Act-Apr%20%201%2001.00.00%202010-2010-04-13T24.00-USA%284%29-6.png>   
dramatically shows the eastern CO-western NE "black hole" I just posted about.

By the way, is there some way to exclude the airplane mobiles?   Those dead 
straight lines aren't Interstates!