Notícies de la indústria

  • Mysterious CW signal received by USB at 16976 kHz off the coast of Brazil

      I found this 2012 listening report on the Quebec amateur club website. It involves CW transmission by the Brazilian Navy at the same frequency of 16976 kHz. https://craq.club/files/documents/Archives/numeriques.pdf Is it just a coincidence that our mysterious CW station was reported by Br...
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  • In 1951, 220 MHz transceiver was used for civil defense

      In May 1951, radio news designed the 220 MHz transceiver for civil defense purposes. This band is selected because it is authorized to be used by the holder of the new technician level operating license. Considering the operating levels of many new amateur radio enthusiasts, it is believe...
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  • How much bandwidth do we have to spend on amateur radio?

      Did you spend some time thinking about the available bandwidth of various amateur bands? As an amateur licence holder, you can access six different amateur radio frequency bands: 80m, 40m, 15m, 10m, 2M and 70cm. If the bandwidth of each of these bands is added together, a total of 26.65mh...
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  • Entering the world of micro UHF Transmitter, 433MHz low power consumption is as small as button

    The size of the transmitter designed by tomtechtod is almost as small as the 337 button battery that supplies it. The board of the mini PCB covers a large number of patch components, most of which are packaged in 0201. Even so, the transmitter is a simple design with two transistor audio levels ...
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  • 144mhz cross equatorial propagation of 6102 km, FT8 or SSB mode can be used

    144mhz open 6000km cross equatorial propagation (TEP) between Buenos Aires and the Dominican Republic Through cross equatorial propagation (TEP), the highly ionized region appears on either side of the geomagnetic equator in the F-layer of the ionosphere. This mode is so interesting because it a...
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  • Conflict with the military band, New Zealand ham regret unable to use the 60 meter section

    Sorry! New Zealand amateurs cannot use the 60 meter band From October 24, New Zealand’s amateur radio enthusiasts will no longer be able to use the 60 meters. Radio amateurs in New Zealand use the band on a temporary basis, allowing ham in the region to use two frequencies, 5353.0 kHz and 5...
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  • TE connectivity launches new antennas for 5g, Nb IOT and lte-m

    Shanghai, China – September 24, 2020 – te connectivity (TE), a global leader in innovative connectivity solutions for high-speed computing and network applications, announced the launch of new antennas for 5g, Nb IOT and lte-m to meet the requirements of cellular IOT devices for diffe...
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  • Xina Mobile ha construït més de 20.000 estacions base 5G a 52 ciutats principals a la Xina

    Al setembre, 5G nodes comercials s'estan acostant, i tota la informació sobre 5G està afectant els nervis de la indústria. Unicom i Telecom han construït conjuntament estacions base 5G en aquest costat, i la Xina Mobile també està fent la construcció de xarxes 5G amb grans esforços en aquest costat. A més de ...
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  • Com entendre l'antena

    Antena s'utilitza per transmetre senyals des de les estacions base i telèfons mòbils. En temps prehistòrics, l'edifici més alt en cada ciutat ha de ser una torre de televisió. La televisió també rep senyals de la torre de televisió a través d'antenes. Les dues antenes de fuet amb les mateixes antenes a la part superior de la forma de l'antena m ...
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