[aprssig] Why different freq in Europe vs US?

Heikki Hannikainen hessu at hes.iki.fi
Mon Mar 26 13:25:07 CDT 2012

On Mon, 26 Mar 2012, Lawrence LaBranche wrote:

> I think the reason for why is history of the band plans. In each region, 
> different uses were put in before APRS. Each region had to find a good 
> frequency according to their band plan.

Another reason is the amount of bandwidth available. We in ITU Region 1 
(Europe, Africa, and Russia) only have 2 MHz on 2 meters, 144 to 146 MHz, 
and need to fit everything in there. Most other allocations differ 
slightly, too.

   - Hessu

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