Archived posting to the Leica Users Group, 2001/10/03

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: RE: [Leica] Re: New aviation rules
From: Brian Reid <>
Date: Wed, 03 Oct 2001 17:58:09 -0700
References: <>

I spent many years working for a company that designed, built, and sold
laptop computers. One of the most important qualities of a laptop is
battery life. If you can make your laptop last 10% longer than the
competition's, it will sell better. Consumer magazines rate laptops
according to how long they run on a charge. And the holy grail of laptop
computers is to be able to run LAX-JFK on one battery.

If a laptop computer loses energy to electromagnetic radiation, that
energy is not available to power the computer. For this reason, the
companies that design laptops spend extraordinary amounts of time and
money testing and reducing the RF radiation from the computers, not
because some government agency makes them, not because it will be kinder
to airplanes, but because it will be more profitable.

For this reason I am quite certain that laptop computers do not bother
navigation equipment. I have no knowledge of cell phones, but their
purpose is to transmit RF signals, so this economic argument would not

Brian Reid

- --
To unsubscribe, see

Replies: Reply from Nathan Wajsman <> (Re: [Leica] Re: New aviation rules)
In reply to: Message from "Austin Franklin" <> (RE: [Leica] Re: New aviation rules)