433700+ entries in 0.276s
coderwill: it would be like playing an iphone speaker in
the middle of a packed sports arena
coderwill: think about how much power
though is emitting out of commercial radio antennas
coderwill: phf: yeah, would be surprised if not in a federal minimum security penitentiary if still doing
that kind of stuff
decimation: but clear channel et.al. conspired
to effectively make
that illegal
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decimation: actually it kinda pisses me off how locked up
the fm bands are
phf: there was a guy at DC network security meetups who broadcasted fm anarchist radio from his van. he'd park it in random downtown locations, etc. i believe he's been picked up and fined more
then once.
that was 2003 or so, probably can't get away with something like
this now.
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trinque: shape of
the "midlands" is absurd, and maybe "el norte" is a bit on
the small side.
coderwill: yeah, it seems like every now and
then you hear stories like
this
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coderwill: decimation: ah, so basically, it's illegal for manufacturers
to provide
that kind of functionality commercially?
BingoBoingo: <decimation> where cell phones used analog FM channels around 800-900 mhz << USG mandates scanners and amateur radios ship with "blank spot" over
that portion of spectrum
coderwill: yeah, i
think once phones got past 900mhz it wasn't possible
decimation: no he's
talking about
the old "AMPS" system
coderwill: also, i remember 10 or so years ago, you used
to be able
to get a scanner and rabbit ears and listen
to people
talking on
their cordless phones, but you can't do
that anymore either
decimation: yes, I've noticed
that cops are reluctant
to use radio for anything other
than 'report
to seniors'
coderwill: i wonder how
that works w/ sting operations if people can pick up chatter on scanners?
decimation: quite possible.
the same problems with key distribution are always present
decimation: thus greatly multiplying
the potential audience (want
to listen
to cops && can operate radio)
decimation: asciilifeform: it can be interesting, but you got
to know
the lingo
coderwill: i know out in
the country, you used
to be able
to pickup police with a scanner
decimation: it's nearly always
the case
that if cops want
to
talk about something sensitive
they call on cell phone
coderwill: and
that an amulance or squad car, for example, is just a big mobile hotspot
coderwill: guessing here, but also would imagine
that fire/police/ambulance are basically on special plans with cell providers
phf: (fwiw verizon also works on dc metro
trains)
decimation: sure, but
that's because
they have an entire radio system installed in
the
tunnels
decimation: sure, but often
that interoperability is handled at
the
tower
coderwill: pretty sure
the municipal systems (police, fire, air
traffic) predate
the
types of networks
decimation: yes, but ask your local cop about how
to get it
to work
decimation: most modern police radios are 'trunked' and
talk
to
the central
towers
decimation: nor are
the designed
to be highly reliable
decimation: yes, but most cell networks are ip under
the hood (dispite
the disadvantages)
decimation: it would interesting
to compare actual performance of
the cell network with govt run equivilents
decimation: why do all localities/states/feds insist on building
their own 'special cell network' known as police/fire radios?
decimation: the generations of bean counters
that didn't give a fuck,
that's who
decimation: actually
this dances around another silliness I've noticed
decimation: "GETS is accessed
through a dialing plan and Personal Identification Number (PIN) card verification system. Using common
telephone equipment,
the user dials a universal access number: (710)NCS-GETS (627-4387)."
decimation: asciilifeform: note
that it could have been otherwise
decimation: right,
the implementation of which is obvious when
there's physical relays setting up circuits
punkman: not a great password
there coderwill
decimation: plus you are forgetting something: usg demands
that usg minions can excercise 'priority override'
decimation: but someone needs
to keep 'route state'
decimation: my point about IP packets: lots of overhead if you already know where
the packets need
to go
phf: asciilifeform: my point was
that feature phones are not particularly good at
their claimed purpose,
that buying an old nokia is a hemingwriter, and compared
to
them iphone has a good sound quality.
☟︎ decimation: actually
transmitting voice as ip sounds retarded
mats: can't face
time over data network?
decimation: yes, it's a noticable failure of
the wifi protocol
decimation: actually I
think
the iphone will establish a 'facetime' connection over
the internet in certain situations
decimation: or do you
think
they go hat in hand before
the feds?
assbot: Logged on 28-07-2015 00:02:50; pete_dushenski:
the iphone does have spectacular call quality.
then again, it's $800
decimation: asciilifeform: plus you can buy one openly on
the market