[BC] Amateur radio spectrum
Robert Bowe
robertb at gjradio.com
Fri Mar 20 19:20:48 CDT 2009
Isn't it in the nature of spread spectrum technology to have sufficient
redundancy and robust algorithms to survive such a "pollution generator?"
How could a pair of 20kHz FM carriers knock down a properly designed and
implemented technology as you stated:
>You do it by spreading the spectrum over several GHz.
What level of interference increase in terms of B/W is that?? < 0.01% !
On Fri, Mar 20, 2009 at 3:00 PM, <RichardBJohnson at comcast.net> wrote:
> No! You are saying things that I NEVER said!
> I said (exactly); " When you fire up your 2-meter
> 3-watt push-to-talk to doubly your spectrum pollution
> using your repeater, you just punched a 1-second
> hole in the spectrum that could have transferred the entire
> contents of your PC hard disk (if the disk had been fast enough)."
>
> It's that near CW carrier that destroyed the ability of anybody
> near you to use spread-spectrum communications. I never even mentioned
> your misquoted, "In that paragraph, you state using a two meter radio,
> running normal FM modulation, using just under 20 kHz bandwidth,
> times two channels, repeater in and out, uses the same
> bandwidth as some scheme that you claim,..." It is sheer
> unmitigated BS, up with which I shall not put.
>
> The word "double" was a type, should have been "double,"
> because you now have TWO pollution-generators on the air
> at the same time.
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