On Sep 21, 2010, at 5:19 PM, Jeff Cochrane - VK4BOF wrote:

> SSB is called mode A3J in most of the legal documents that govern our hobby.
> The reason why the mode is called A3J in all the legal stuff is that the 3 is 
> the maximum bandwidth in khz that is permitted.)

The "3" in A3J has nothing to do with bandwidth -- the "3" stands for "a single 
channel containing analog information."

73
Chen, W7AY

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