Communications are independent of cellular networks A Brooklyn-based startup called goTenna has created a portable antenna that may just save the day when cellular service is unavailable. The portable antenna connects to a smartphone via a Bluetooth Low Energy link. Once connected, users with either an iOS or Android app can then send text messages through the antenna. (The recipient must also have a goTenna, and consequently the product is sold in pairs.) The device uses the 151MHz-154MHz frequencies, with range depending on location. In a densely populated place like Manhattan, that range could be less than a mile. In more open spaces, up to 50 miles is possible. The antenna, which takes a USB-delivered charge, will store messages and hold them until a connection can be made. Businesses employ a range of backup communications technologies, including long-range satellite phones and ham radios, as well as shorter range walkie-talkies. The goTenna could serve as an alternative to a walkie-talkie — and even offers some advantages over other options. For example, its messages are encrypted and private, a separate device isn’t needed, and people can use the goTenna system with their smartphone interface. The goTenna also has the ability to “shout” a message by delivering it to all goTenna users who have opted in to receive a broadcast. “That fact that we are totally decentralized means that in many ways it can be a backup to your backup,” said goTenna CEO Daniela Perdomo, who co-founded the company with her brother, Jorge Perdomo, goTenna’s CTO. In addition to using goTenna as an emergency tool, Perdomo said people could use the technology as a means of communicating while they’re traveling, when they’re taking part in outdoor recreation activities, or when they’re involved in any type of situation that requires private communication. The antenna uses a Lithium-ion battery and is estimated to last two to three days with normal use, or as long as 30 hours if it’s on continuously. Perdomo said the outages created by Hurricane Sandy in 2012 prompted her to imagine ways smartphones could be made to directly communicate with other phones. The goTenna will ship in late fall, but a pair of the devices can be preordered for $149.99. Patrick Thibodeau covers cloud computing and enterprise applications, outsourcing, government IT policies, data centers and IT workforce issues for Computerworld. Follow Patrick on Twitter at @DCgov, or subscribe to Patrick’s RSS feed . His email address is pthibodeau@computerworld.com. See more by Patrick Thibodeau on Computerworld.com. Related content news analysis Apple earnings: About that iPhone 'slump' in China Based on information from Thursday's earnings report, it seems that data pointing to an iPhone slump in China were over-baked. By Jonny Evans May 03, 2024 9 mins iMac iPhone Apple news Microsoft begins to phase out ‘classic’ Teams Microsoft is encouraging Teams customers to move to the new, faster version of the collaboration app; the older version will be switched off next year. By Matthew Finnegan May 03, 2024 3 mins Microsoft Teams Collaboration Software Productivity Software news analysis Apple confirms it will open up the iPad in Europe this fall The latest efforts to comply with Europe’s Digital Markets Act mean developers can offer to side load apps to both iPhones and iPads in the EU. Apple has also taken steps to improve what it offers to smaller and non-commercial developers in the By Jonny Evans May 02, 2024 6 mins iPad Apple Mobile Apps news Udacity offers laid-off US workers free access to its courses for 30 days Sign-ups will be available over the next 30 days By Lucas Mearian May 02, 2024 4 mins Technology Industry IT Jobs IT Skills Podcasts Videos Resources Events SUBSCRIBE TO OUR NEWSLETTER From our editors straight to your inbox Get started by entering your email address below. Please enter a valid email address Subscribe