Comments on: Off the Grid

By: bernieS

bernieS — Sat, 01 May 2010 06:09:41 +0000

Hey ‘Securenet’–the fine folks at Optoelectronics (Kevin) say that what you claim to have accomplished above isn’t possible, because their (discontinued) R-10 and Xplorer receivers can’t follow Trisquare’s frequency-hopping fast enough to intelligibly eavesdrop on voice comms. Nice spoof, though! The Motorola DTR radios you suggested for more privacy cost 6x as much and can be trivially eavesdropped on with another DTR radio by manually stepping through their very small number of virtual channels. To enjoy the privacy potential of a Billion virtual radio channels like Trisquare includes, Motorola users must shell out still more cash for extra programming eqpt. For the *average* casual two-way radio seeking reasonable privacy and simplicity, Trisquare offers a far better value, for the price of dinner.

By: steve

steve — Fri, 29 Jan 2010 20:45:14 +0000

Today, I got a reply from trisquare tech and a repeater is being considered however not approved for production yet. Their web site is to have more info on that , when and if it happens.

By: steve

steve — Fri, 29 Jan 2010 00:13:01 +0000

I just e-mailed trisquare and asked if there is a repeater capable system available. Does anyone here know if there is ? Thanks for any reply

By: Securenet

Securenet — Wed, 18 Nov 2009 20:27:33 +0000

You don’t need a microceptor to be able to intercept a TriSquare radio. They use slow hopping (2.5 frequency hops p/sec), an Optoelectronics R-10 or Xplorer near field receiver will track it and produce audio since these radios are not digital, but use analog FM. With a 900MHz antenna on my Opto I can pick up a TriSquare within apprx. 500-1000′ depending on obstacles, terrain, etc.

If you want privacy use a Motorola DTR and create your own private channel. DTR’s have a true digital signal.

By: philosecurity » Blog Archive » Rogue Wireless Gets Sneakier

philosecurity » Blog Archive » Rogue Wireless Gets Sneakier — Mon, 09 Mar 2009 07:41:33 +0000

[...] Even if you’re using a spectrum analyzer like WiSpy, you may not notice it. Bluetooth uses Frequency Hopping Spread Spectrum, and hops 1600 times a second throughout the 2.402-2.480GHz band. Because it’s spread out [...]

By: bernieS

bernieS — Tue, 20 Jan 2009 01:49:05 +0000

As Sherri referenced on her blog, military or govt intelligence agencies–or any other adversary with effectively unlimited technical resources–could track or jam FHSS communications. But their eavesdropping/jamming system would have to be physically nearby (like within a mile or two) their target to do so.

Millions of private users of these FHSS radios (like Sherri) are unlikely to be targeted in this manner, because capable adversaries are very unlikely to deploy their systems in virtually unlimited simultaneous physical locations, or to follow millions of low-value targets around all the time.

The decentralized nature of “Off-The-Grid” FHSS radio communications pretty effectively thwarts centralized eavesdropping and jamming.

-bernieS

By: sherri

sherri — Tue, 26 Aug 2008 19:47:37 +0000

exspook: Is there any way you know of to verbally communicate, either short or long range, without being monitored?

By: exspook

exspook — Tue, 26 Aug 2008 01:41:01 +0000

folks, the illusion of freq hopping or spectrum hopping being a way to not be monitored is frankly, “an illusion. The military and DOD developed FH and has an incredible amount of technology to defeat it……

By: bryan

bryan — Fri, 01 Aug 2008 20:05:15 +0000

NIST is working on new surface mount sized atomic clocks (~ grain of rice) with about 1 second/300 years accuracy: http://tf.nist.gov/ofm/smallclock/index.htm

I think that will make for interesting crypto applications: eg network ports opening for fractions of a second, physical locks with fine time dependency built in, or perhaps even stored quantum states which would decohere if measured out of phase, destroying information.

By: sherri

sherri — Mon, 28 Jul 2008 11:31:20 +0000

Awesome!

bernieS just sent me a link to the TSX300s on Amazon:
http://www.amazon.com/TriSquare-TSX-300-900MHz-Charcoal-Metallic/dp/B000WY8JRU

Apparently my sexy new *black* TSX300s aren’t actually in distribution yet…. nyah nyah nyah The charcoal metallic ones are nice too, though.

By: carl

carl — Mon, 28 Jul 2008 04:57:10 +0000

Cool, thanks for the links and info on new 2-way radio modes. I didn’t realize your interest in security issues extended so broadly – it makes for an interesting blog, anyway. I was thinking of getting a pair of radios for family use anyway, I think these might be just the thing.