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From: robinson@plhp002.comm.mot.com
Subject: more SS
Date: Wed, 4 Dec 1996 10:11:06 -0500

``I think you have made a few assumptions that aren't necessarily true. Just because a radio is working, and it happens to be CDMA, doesn't mean it is working only because it is CDMA.

I'd hate to have to have all the extra complexity of CDMA just to talk to a site that is only 2 miles away!!!!!

THIS IS THE VHF REFLECTOR, NOT A MARKETING RAG!!!! DO NOT USE THIS GROUP FOR FREE ADVERTISING OF YOUR COMPANY'S PRODUCTS!!!!

`I hope you gets lots of SPAM responses (this is a hint to everyone else on the reflector). 73 N3GDE

```On Dec 3, 2:52pm, Phil Karn wrote:
> Subject: Re: W3OTC's quote from the W3IWI/KA9Q EME paper
> By the way, just to show you this spread spectrum stuff isn't all
> theory, I am typing this message from my laptop while sitting indoors
> at the local food court near work.
>
> I am logged into my office workstation over a Qualcomm CDMA (spread
> spectrum -- 1.25 MHz bandwidth) cell phone operating in the 1.9 GHz
> PCS band. The phone is plugged into the serial port on my laptop, and
> it's carrying TCP/IP/PPP packets from the Linux operating system on my
> laptop to the company Internet and thence to the outside world.
>
> The cell site is perhaps a mile or two away on a 2-story building, and
> the phone is just resting on the top of my bag in a horizontal
> position. The path is not especially strong; I see only one bar on the
> signal strength meter. Yet thanks to the strong coding and inherent
> multipath resistance of spread spectrum, the TCP packet loss rate is
> nil -- even character-at-a-time typing works just fine.
>
> Phil
>
> ------
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>-- End of excerpt from Phil Karn

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