[Spooks] Son of Sam..Smarter than we Think?

[Dave Taylor]

Well, I guess Son of Sam has become quite an issue!

But before we all run off to Walmart to buy some noisemakers, take a =
listen
to the 93-tone orthogonal frequency division multiplexing (OFDM) =
recordings
at the following link:

http://rover.wiesbaden.netsurf.de/~signals/WAV/RUS-OFDM.HTML

Do these sound familiar?

OK. Buy some "noisemakers," a good microphone and a quality amplifier.  =
Then
watch some Walmart-type noisemaker sounds on an oscilloscope and =
spectrum
display.  You will see that such noises are not random at all--they, and
their harmonics, are very predictable and identifiable.

But the possibility of signatures like OFDM occurring randomly from =
noise is
quite mathematically impossible--and this is the precise reason they are
used.

So perhaps Sam is just playing recordings of Russian digital code--or
something like it?

Perhaps...But perhaps not.

Now for my theory:

I know it's easy to see government (especially the FCC) as slow, lazy, =
dumb
and ineffective.  And generally I agree-since I worked in government for =
30
years :-)

But sometimes government can be quite efficient.  And this is especially
true in the radio signals area.  In fact, almost all complex HF data
techniques were developed as government or military projects.

Governments (and their contractors) have some of the best and brightest
engineers in their employ.  And sure, governments have automated =
CODE3-type
systems that monitor the airways, always looking for new transmission =
and
encryption modes.

But these guys and gals are not stupid.  There are lots of ways to =
"sift"
the airways, and I would not be surprised if government engineers =
monitored
ham and SWL email lists just like this one.  After all, there are a lot =
of
free tips from smart people here!

Now suppose you are a government contractor.  You have developed a new =
HF
transmission technique that must be validated.  How can it be tested?  =
Part
of the test is exposing other people to the technique.  Can it be =
decoded by
the average techy?  Can the data within messages be read by others?  Has
anyone succeeded in analyzing and cracking the technique?  (If so, any =
of us
on this email list surely would let the rest of the list know!)

So you put some chocolate on your signal: A crazy Son of Sam message =
that
gains notoriety for your test.  All over the world, people are asking =
"What
is this?"  And you wait and monitor the email lists...

Does this theory sound crazy?

I would suggest it is no crazier than a pot-smoking nut who sits at his
station twisting a four-way frequency switch, while playing various
Walmart-provided buzzers and party favors!

But who knows...

Dave :-)



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