To clarify on your "complexity" argument, are you saying that the
POTUS-parade may be employing technology that detects other devices by
their output signatures, then fires a noise-beam specifically at them to
maximise power delivery and minimise energy costs/unnecessary interference?
If that were the case, then a shielded, passive receiver ought to be OK,
would that not include a HAM radio in listen-only mode? (<- Knows little
about HAM) ->So, did OP broadcast much prior to the interference, or was
their rig poorly shielded?
For my part, I just doubt they're using intelligent jamming because cost
isn't really a factor in their requirements, is it? They can just blare
out on all the frequencies they care about, and strong-arm providers at
other spectra to blackzone the region. How much power is needed to jam
at the frequency band you described? We're talking about a cavalcade
that could, if they considered it necessary, employ a portable nuke!
Power ain't a limiting factor! :)
On 28/11/14 08:46, coderman wrote:
On Wed, Nov 26, 2014 at 7:48 PM, Gregory Foster
<[email protected]> wrote:
Did Dan Geer just troll Juan for the holidays?
we all celebrate in preferred personal ways,
:P
On 11/27/14, grarpamp <[email protected]> wrote:
Jammin is crypto, on topic...
So continuing on topic...
I'd bet there are papers somewhere about the difficulty in jammin
true spread spectrum crypto stuff. Perhaps HERFing
the receiver junction is better option if in range.
here's the game:
a. you control power
b. you control range
c. you control complexity
so spreading spectrum farther, gets you lobes outside selective denial
of service. but range can also extend to beam form in addition to beam
width.
power, of course, a similar game of effort - rise above the elevated
noise floor for the win.
a different type of attack and avoidance, in coding complexity, even
up to logical protocol DoS.
thus, to be the most difficult to deter, you would max all three: very
high powered, very wide band,complex coded and efficient cognitive
links over MIMO beam forming foundation.
not long ago such requirements were comical. recently they became
economically not completely infeasible.
one day, eminently portable.. :)
best regards and nazi holidays,
