(Continued from Part 5. This concludes the article series.)
Pilot of the Airwaves
Another area where mobile electronics can provide some useful tactical functionality is communications, even if cellular networks and the Internet aren’t available. There are a lot of good articles here on SurvivalBlog.com about radios, so I’m going to focus on other areas.
One very useful option for communications is a goTenna Mesh paired with each mobile device on your team. They’re around $180 a pair, but goTenna frequently has them on sale for 20% or more off. It’s a small device that you clip to the outside of your gear and pair with your mobile device using Bluetooth that allows you to send text messages to other goTenna users. It uses MURS frequencies (151/154MHz) to communicate between goTennas, and all communications are strongly encrypted. They advertise up to a 4 mile range between devices in the open, and I’ve been able to exchange messages with another user over two miles away through broken terrain; there are even stories of people being able to connect over a distance of 25 miles in perfect conditions.
Being able to exchange information via text messaging can be a huge advantage if you need quiet communications in tactical situations, and there’s a lot less chance of your communications being intercepted than with radio. There are also instructions available on how to make your own solar-powered goTenna repeaters, which you could deploy on some high points around your AO to extend your range – the goTennas will ‘hop’ a signal between devices to get it to its intended recipient. Once the goTenna app is installed on your device, no Internet access of any kind is required to communicate with other users. Note that goTenna provides an optional subscription service called goTenna Plus, which allows you to do things like download and use topographic maps to share your location, have messages relayed via cellular service when one user in the mesh has cell service, automatically send your location to someone at a regular interval, etc. These options are pretty nice, but since they require Internet access and GPS so I wouldn’t recommend counting on them in a post-SHTF scenario.Continue reading“Tactical Technology for TEOTWAWKI – Part 6, by J.M.”