mobile broadband support

[Gerry Reno]

I have a Novatel Wireless S720 mobile broadband card.  It's working, but 
does anyone know how to get a signal strength displayed for it?  I'm 
flying blind with it.  I can't tune my external antenna except by 
gauging the relative speed of downloads between one antenna position and 
another.  Rather primitive.   I've been googling this but haven't found 
anything yet.

Thanks,
Gerry