Historic 630m QSO

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Amateur Radio operators Steve VE7SL and Roger VK4YB have completed the first recorded two-way QSO between Australia and Canada using the JT9 mode.

Even with poor propagation, luck prevailed and the contact was made.

The team have made screen captures available of the contact, they are available at http://njdtechnologies.net/091516/

USBee PC Data Transmission

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An Israeli researcher with a history of technology research and findings, has located a technique of using a computer's USB port as a mini RF transmitter.

Mordechai Guri, used air-gapped PC’s to find that by modulating the data fed at high speed to plugged-in devices, a string of “0” bits could be transmitted from the USB port detectable between 240MHz - 480MHz.

Guri wrote a sequences of '0' and '1', creating a carrier wave from the rapid voltage changes on the interface's data pins, then binary frequency shift keying (B-FSK) to encode useful information into the wave.

Guri estimates that transmissions of 80 bytes per second can be achieved over the air using this technique.

Full Story - http://www.theregister.co.uk/2016/08/31/usbee_shows_once_again_that_airgapping_doesnt_protect_squat/

NIST’s Rolling Wireless Net Helps Improve First-Responder Communications

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National Institute of Standards and Technology (NIST) have been working on a solution to integrate different technology brands into a single wireless communication system.

The system, about the size of a large filing cabinet, provides a platform to Emergency First Responders to set-up communications faster than a traditional “cell on wheels”.

Dubbed the “Nerdcart”, the system enables over 200 local users of broadband smartphones, Wi-Fi, data terminals and older walkie-talkie radios to all communicate with each other using voice, text, instant messages, video and data. 

The system can cover a rural area of 4 kilometres (2.5 miles) and can also be integrated with LTE (4G) mobile phones and Land Mobile Radio (LMR) systems.

NIST - https://www.nist.gov/news-events/news/2016/08/nist%E2%80%99s-rolling-wireless-net-helps-improve-first-responder-communications