On Tue, 4 Sep 2007 08:52:11 -1000 Jim Thompson <[EMAIL PROTECTED]> wrote:
> > On Sep 4, 2007, at 8:30 AM, mcb, inc. wrote: > > > On Tue, 4 Sep 2007, Richi Plana wrote: > > > >> Fascinating. So "passive receivers" really aren't? Or are there > >> classes > >> of receivers which are (no amplification or very sensitive > >> pickups)? > > > > Crystal sets. > > no amplification: yes > very sensitive: no.... crystal sets require a very strong AM > modulated signal. > > If you have a very strong AM signal, and your construction skills > are good, you don't even need the crystal: > http://bizarrelabs.com/foxhole.htm > > > Not to mention AM is extremely susceptible to interference, and is not made for data modulation. But being the variety of frequencies and modulations will be being transmitted at the plane anyway (from ground), you are unlikely to add anymore interference. And the power of the modulators in receivers is so low you would be hard pushed to pick it up outside the box it's in. -- Ewan Marshall (ewanm89) Geek by nature, Linux by choice.
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