
The 30m antenna has azimuth limits of 60 and 460 degrees.  Azimuth 360
degrees is due North. Therefore there is an overlap range approximately 
toward East-Northeast, which the antenna can reach at a low azimuth 60
to 100 (from the South) or at a high azimuth 420 to 460 (from the North).

\command{SET TOPOLOGY LOW}  selects to use the azimuth range  60 to 420 degrees.

\command{SET TOPOLOGY HIGH} selects to use the azimuth range 100 to 460 degrees.

