Re: wireless keyboard encryption
On Wed, Sep 26, 2007 at 01:27:06AM -0400, Celejar wrote:
> [catching up on a d-u backlog]
>
> On Fri, 21 Sep 2007 02:23:07 -0600
> Nate Duehr <nate@natetech.com> wrote:
>
> [snip]
>
> > I think you'll find that even "good" wireless keyboards won't easily
> > penetrate more than a single wall of your home, and won't extend very
> > far past an exterior wall in most setups, if at all. I can't even
> > put the receiver under the 1 1/2" thick wooden desk on top of the
> > computer without some glitches -- these devices use VERY low RF
> > output... at least the ones I own.
>
> Doesn't penetration vary *inversely* with the frequency?
Yes but this is a non-sequeter. VERY low RF output implies power not
frequency. To be concise: penetration will vary directly with power
and inversely with frequency. We won't get into antennal _length_ :)
Doug.
Reply to: