[time-nuts] Better Tbolt [was Choke Ring Design for L1]

[Mark Sims]

The current Lady Heather beta release has several antenna survey commands.  

You can plot signal level vs azimuth (actually, not all that useful since high elevation sats cross a lot of elevation angles and obsucre low elevation angle data that tends to have a much greater effect on performance).  

Signal level weighted by 1/elevation vs azimuth (highlights horizon level signal obstructions).

Signal level vs elevation (good for choosing your antenna elevation mask angle)

And a nifty color plot of signal level vs az/el...  probably the most informative.

Also can plot the raw signal level vs az/el (much like the current satellite position map).

The 'z' keyboard command can zoom any of these displays to full screen until the next key press.

Also when the program exits a tbolt.sig file is written and can be read back in at a later time or processed by external software.  Each entry has az/el/average signal level. 

Also the '&a' oscillator autotune/performance optimizer function now uses the signal level vs elevation data to chose a good elevation mask angle...  it choses the lowest elevation angle with a signal level > (0.875 * max signal level).   

For best use of any of these features,  set your elevation mask angle to 0 degrees and collect data for at least 24 hours. 		 	   		  
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