On 11/28/14, Cathal Garvey <cathalgarvey@cathalgarvey.me> wrote:
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?
to clarify, the POTUS jammin' described by OP is a simple, and brute case. however, there is precedent for "intelligent jamming", where attempts to avoid the specific DoS using wide band, complex encoding would be met with a specific wide-band, complex response telling you to get stuffed. these systems cooperate together, and surely countermeasures are in place if you evade the trivial measures. note that avoiding POTUS jammin' is a violation of FCC regs, #include <std_disclaimer> etc,...
If that were the case, then a shielded, passive receiver ought to be OK,
a shielded, passive receiver would be overwhelmed by the brute flood.
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,
yup.
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! :)
they probably use a few tens of watts EIRP at most, unless they need to react to a perceived threat to penetrate that barrier. military systems go to many thousands of watts. best regards,