🚀 go-pugleaf

bonk@elm.cis.ohio-state.edu (gregory j bonk) writes:

>I was sent this from a broadcast to AT&T employees.
> Thought you might be interested.....
>   
>         to one mile from the base.  The AT&T 9530 uses full digital 
>         transmission to encode speech onto a radio signal, much like music 
>         is encoded onto a CD, and to provide clearer sound over a longer 
>         range than cordless phones operating in the 46/49-MHz frequency.  
>         AT&T's spread-spectrum, frequency-hopping architecture, which is 
>         patent-pending, actually avoids interference by "hopping" the 

	
How do you patent something that has been available for the past 30+
years?   

>         and multilevel buildings.  The random selection of 50 of 173 
>         channels, along with digital speech encoding, makes it nearly 
>         impossible to eavesdrop on conversations.  The AT&T 9530 was 

I'd like to know what the channel-switching rate is

Sounds nice, but nothing that NSA should worry about.