[Elecraft] P3 display of K3 filter bandwidth and other information

[Wayne Burdick]

The P3 is connected to the K3 at a point ahead of the crystal filters,  
so when you change crystal filters on the K3, it won't change the P3's  
displayed waveform.

However, the P3 will be aware of the K3's filter bandwidth and offset,  
so we can show a bracketed or otherwise highlighted area on the P3  
display that reflects the filter settings. We could show both the DSP  
and crystal bandwidth using different colors.

Going farther out on a limb: The P3 could highlight ham-band edges and  
band segments, even by license class, programmable by country. It  
could mix spectral and waterfall displays with decoded text. You could  
assign a function switch as an auto-tune switch for PSK31 -- etc.,  
etc. (Somebody stop me!)

73,
Wayne
N6KR