[HamWAN PSDR] Ever seen an OFDM signal up close?

[Bart Kus]

No?  Well now you have!  There's 26 of these little beauties spaced 
312.5kHz apart on each side of the center marker.  You can see the 
marker delta of 310kHz (resolution wouldn't let me be as precise as 
312.5) showing the first subcarrier peak to the right of center. This 
one is special, in fact.  It is one of 4 pilot subcarriers spread among 
the 52 total, leaving 48 subcarriers for data transport.  This picture 
only shows 10MHz of the spectrum since it's hard to see the full 
bandwidth at this low resolution of 1001 pixels horizontal.

This has been your neat fact of the day.

--Bart

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