[NLRS] Important matter for VHFers

[tom ring]

On 25 Apr 2011 at 14:07, Dr. Gerald N. Johnson wrote:

<snip some good comment>

> If we worked at it we could get higher speeds than 9600 in 15 KHz
> bandwidth. It would take multiple tones like land line modems that get 
> nearly 56 KB in less than 3 KHz bandwidth. It would take serious modem 
> modifications to accommodate varying pass bands without having to 
> negotiate phase and amplitude equalization for each transmission. 
> Probably would have to use complex forward error correction.

And it's all been done if it's possible with present technology.  The only 
question is how much is patented, how much is already open source, and how much 
is secret.  The sets will overlap.

tom
K0TAR

> 
> >
> 73, Jerry, K0CQ
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