[amsat-bb] Re: Two hundred 437 MHz satallites launch March 16 + WebSDR
howied231 at hotmail.com
Tue Mar 4 13:16:58 PST 2014
Yes, that is true, so are these licensed under an authority other than amateur radio ? If they aren't then my questions stand.
Date: Tue, 4 Mar 2014 14:55:52 -0600
Subject: Re: [amsat-bb] Re: Two hundred 437 MHz satallites launch March 16 + WebSDR
From: damonwa4hfn at gmail.com
To: howied231 at hotmail.com
CC: amsat-bb at amsat.org
70 CM is not just for the ham bands, it is a shared band check the ruleswa4hfn Damon
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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