3 ms·

er does anyone producing these not know the radiation patterns for a yaggi - held like a normal rifle you would have a nice high power lobe right through the

er does anyone producing these not know the radiation patterns for a yaggi - held like a normal rifle you would have a nice high power lobe right through the operators brain. CISCO all ready do some very tasty airnet kit that attacks rouge ap's and hosts.

Ao7bei3s 11y ago
The signal wouldn't have to be very strong, it should be relatively harmless for the operator. (Most rc rf transmitters send with <<1W PEP and a low-gain antenna.). Also, at multiple GHz (most rc rf links used today are 2.4 GHz (no, I don't mean WLAN)), the waves don't penetrate the skin very well. Also, Yagi antennas have (not perfectly, of course, but approximately) unidirectional beam patters; that's what the reflector elements at the end are for. The back lobe isn't very strong. Also, the exposure would be for a very short amount of time. Many radar operators are exposed to much, much stronger radiation on a continuous basis. Though admittedly, they do get cancer.
- spacecowboy_lon 11y ago
  The actual emitted power is magnified by the antenna gain (say 14db) its not consumer 100 mw any more. And those sort of antennas have very pronounced side lobes. And to get range they normally run these blue tooth/wifi sniper rifles much hotter than your consumer wifi AP PTP you can run 4W
  - Ao7bei3s 11y ago
    The antennas nominal gain applies only in the direction of the main lobe, ie. not towards your head. A typical Yagis strongest sidelobe will be well into the negative dB. Also, both the consumer hardware 100mW limit and the 4W PTP limit are EIRP (in the US; apparently; I'm from Germany), so the gains don't matter. And you achieve them with very directional antennas (which are hard to aim by hand), not with a strong transmitter. Radio range is not the problem at all when aiming by eye - because your target is small, it's line of sight, and the pilot is likely not using a very strong transmitter and a very directional antenna.
72deluxe 11y ago
I thought Cisco just broadcast disconnect messages for the rogue APs? That way, the AP gets "shut down" because nobody can connect to it (they just disconnect as soon as they've connected), not due to any wizardry. In a sense it would reduce the amount of airspace being utilised by many wireless clients (as they couldn't connect) but it can only do this by bombarding the same airspace with disconnect messages, thereby contributing to the problem it is attempting to solve (cramped airspace).
- spacecowboy_lon 11y ago
  Shuts it down and tracks it on a map via triangulation

Ao7bei3s 11y ago

The signal wouldn't have to be very strong, it should be relatively harmless for the operator. (Most rc rf transmitters send with <<1W PEP and a low-gain antenna.). Also, at multiple GHz (most rc rf links used today are 2.4 GHz (no, I don't mean WLAN)), the waves don't penetrate the skin very well. Also, Yagi antennas have (not perfectly, of course, but approximately) unidirectional beam patters; that's what the reflector elements at the end are for. The back lobe isn't very strong. Also, the exposure would be for a very short amount of time. Many radar operators are exposed to much, much stronger radiation on a continuous basis. Though admittedly, they do get cancer.

spacecowboy_lon 11y ago
The actual emitted power is magnified by the antenna gain (say 14db) its not consumer 100 mw any more. And those sort of antennas have very pronounced side lobes. And to get range they normally run these blue tooth/wifi sniper rifles much hotter than your consumer wifi AP PTP you can run 4W
- Ao7bei3s 11y ago
  The antennas nominal gain applies only in the direction of the main lobe, ie. not towards your head. A typical Yagis strongest sidelobe will be well into the negative dB. Also, both the consumer hardware 100mW limit and the 4W PTP limit are EIRP (in the US; apparently; I'm from Germany), so the gains don't matter. And you achieve them with very directional antennas (which are hard to aim by hand), not with a strong transmitter. Radio range is not the problem at all when aiming by eye - because your target is small, it's line of sight, and the pilot is likely not using a very strong transmitter and a very directional antenna.

72deluxe 11y ago

I thought Cisco just broadcast disconnect messages for the rogue APs? That way, the AP gets "shut down" because nobody can connect to it (they just disconnect as soon as they've connected), not due to any wizardry. In a sense it would reduce the amount of airspace being utilised by many wireless clients (as they couldn't connect) but it can only do this by bombarding the same airspace with disconnect messages, thereby contributing to the problem it is attempting to solve (cramped airspace).

spacecowboy_lon 11y ago
Shuts it down and tracks it on a map via triangulation