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Frequency 'sweet spot' helps signals travel in tunnels
Underground tunnels, usually a difficult environment for radios, can have a frequency 'sweet spot' at which signals may travel several times further than at other frequencies, according to researchers at the National Institute of Standards and Technology (NIST), in the US.
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Radio dishes activated and collecting
The first 42 radio dishes of the Allen Telescope Array (ATA) are working and collecting data from outer space, according to the University of California, Berkeley and the SETI Institute
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CML Microcircuits CMX994 direct conversion receiver
CML Microcircuits has added the CMX994 direct conversion receiver to its family of RF integrated circuits.
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GNSS antennas
ASD Technology has released a wide range of GNSS antennas that covers the standard GPS L1, GPS L2 and GPS L5 as well as the Galileo L1, E5 and E6 and Glonass L1 and L2 frequency ranges.
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ASD Technology GPS antenna
ASD Technology has released the 0310-814 GPS-AJ antenna, a rugged, lightweight annular patch design.
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VHF warning to boat owners
The Australian Communications and Media Authority is calling on boat owners and users to double check that they hold a certificate of proficiency to operate their VHF marine radios.
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