mapping in the sierras and places west

[Harmon Seaver]

      Well, very low frequency could be used quite easily by almost anyone, in
fact, the simplest, cheapest, most portable transmitters would use VLF and
morse code. It's something any 10 year old kid could rig, and you get
excellent propagation all over the world. Hams use VLF around campfires just
for kicks.
And if you used it in burst mode with a pre-recorded tape or digital input of
an encrypted message sent in morse -- who knows?

Greg Broiles wrote:

> At 07:50 AM 11/12/2001 -0800, Major Variola (ret) wrote:
> >But you missed the mil 4-engine cargo-type plane towing a wire held
> >in a trailing Y config by two mil copters flying in tight formation
> >behind it,
> >circling SF.  Yes, I wouldn't have believed that was possible without
> >having seen it.
> >
> >Maybe they were mapping too.
>
> They overflew San Jose and Santa Clara, too, headed westbound.
>
> What would a trailing wire like that measure or receive? My limited
> understanding of RF says it'd be good for picking up very low frequency
> emissions or transmissions - but I don't know of any sources of those that
> I'd expect to be of interest, other than those used by US subs and I'm sure
> they have better ways to pick those up.
>
> I'd have expected the interesting intel to be up at the other end of the RF
> spectrum, in the 800-2400 Mhz range with cell phones, cordless phones,
> pagers, 802.11b, etc.  Any ideas?
>
> --
> Greg Broiles -- gbroiles at parrhesia.com -- PGP 0x26E4488c or 0x94245961
> 5000 dead in NYC? National tragedy.
> 1000 detained incommunicado without trial, expanded surveillance? National
> disgrace.

--
Harmon Seaver, MLIS
CyberShamanix
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