[amsat-bb] Re: Two hundred 437 MHz satallites launch March 16 + WebSDR
damonwa4hfn at gmail.com
Tue Mar 4 12:55:52 PST 2014
70 CM is not just for the ham bands, it is a shared band check the rules
On Tue, Mar 4, 2014 at 2:30 PM, Howie DeFelice <howied231 at hotmail.com>wrote:
> Is CDMA an authorized emission type for the Amateur service? What is the
> chipping rate/bandwidth of these? Don't the PRN sequences need to be made
> public so as not to be classified as "encryption" ? Detailed specs on the
> Sprites is in short supply. Has anyone done a link budget, seems like allot
> of spreading gain is required to hear 10mW form a 300km orbit which
> translates into allot of bandwidth in a part of the band usually reserved
> for narrow band modes. The lack of transparency on many of these projects
> that use the amateur bands seems to run against the spirit of amateur radio
> in my opinion.
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