25 febbraio 2012
24 febbraio 2012
Samsung e IDAG, International DMB Advancement Group, un consorzio industriale che promuove l'adozione degli standard di radio e tv digitale della famiglia Eureka 147 (DAB e DMB), hanno annunciato l'imminente uscita di una versione dello smartphone Galaxy S Wi-FI 5.0 equipaggiata con ricevitore T-DMB/DAB+ integrato. Sarebbe un'opportunità davvero interessante nelle nazioni che hanno adottato o rilanciato la radio digitale. Secondo l'annuncio che ho trovato sul blog dell'IDAG la versione speciale di Galaxy S sarà in vendita da aprile, ma solo in Germania, Olanda, Svizzera, Regno Unito, Norvegia e Sud Africa (dove Mothobi Mutloatse, strana figura di letterato, musicista, editore e imprenditore avrebbe ottenuto dal regolatore ICASA una licenza DMB per il lancio di un servizio di tv mobile). Prezzi e dettagli tecnici sono ancora ignoti.
In passato il connubio tra cellulari e DAB non ha avuto particolare successo, ma oggi l'integrazione ha fatto parecchi passi avanti e ci sono società come la coreana iCube che sviluppano già accessori iPad/iPhone/Android per la ricezione DMB/DAB su smartphone e tablet. Uno dei brand sotto cui potete trovare in giro per il mondo i dispositivi esterni iCube (un dongle per il connettore di iPhone e una interessante mattonella DMB/DVB-T che ridiffonde i programmi della tv digitale terrestre via Wi-Fi) è per esempio Tivizen.
23 febbraio 2012
22 febbraio 2012
La piattaforma Stitcher, che raccoglie i migliori contenuti della talk radio e dei podcast, cerca di invertire la tendenza dotando la nuova versione della sua app per iPhone/Android (qui la versione AppStore) di una maggiore integrazione con Facebook e di nuovi strumenti che permettono all'utilizzatore di rendersi conto di quali altre persone ascoltano gli stessi contenuti, un canale di ritorno e condivisione che restituisce la dimensione dell'audience alla radio asincrona e ai palinsesti fai-da-te. Stitcher, scrive Beth Murphy sul blog della piattaforma "talk Web radio", «reinventa una esperienza di ascolto condivisa per la radio di notizie», tra l'altro una funzionalità, che può portare un vento di novità anche nella radio convenzionale
We love radio here at Stitcher and are always on the look out for new shows and podcasts. With Stitcher you’ve always been able to discover the latest news, sports and comedy the world is listening to. With our latest release, you’ll now be able to discover and share the best of talk radio with your friends. For the first time in the history of talk radio you can see what people are listening to, liking and adding to their favorites. We’ve worked closely with Facebook and are among the first mobile apps to deeply integrate the new timeline features. We’re obviously excited.See what your friends are listening to all in once place, share your own favorites and view your Stitcher listening stats. You’ll also be able to discover new podcasts your friends are listening to via Facebook and share your favorite shows. This is a first for talk radio and new way to share the listening experience with the people that matter to you. Sign into your Facebook account from the app to start sharing your favorite shows. You can see how interesting and worldly your friends really are by checking out what they’re listening to, and hopefully discover something new.You can always control what you decide to share – just click on your profile to change your settings. You can also swipe any individual activity to remove it from your history.Since we launched our discovery engine, over a third of Stitcher listeners have discovered new podcasts through the “Listeners also like” section. The shared listening experience is now even more powerful as you discover and share your favorite shows. As always, keep us posted with your feedback and feature suggestions.
21 febbraio 2012
Pure Highway 300Di, il bello del DAB+ per ogni autoradio. Ora ci vuole solo la radio digitale in tutta Italia
20 febbraio 2012
19 febbraio 2012
Le memorie di uno dei padri della missilistica sovietica svelano il mistero dei presunti cosmonauti scomparsi?
(...)Discussing new ideas with Bykov [he] told me about his ideas for the experimental development and testing of a radio intercom link. Losyakov, who managed the department of radio receivers at NII-695, proposed testing communications reliability using the relay method.To do this he developed an on-board receiver that was supposed to receive transmissions from conventional broadcast radios and then relay them through the future cosmonaut’s standard on-board radio telephone transmitter. At that time I doubted the advisability of that idea, from the standpoint that the radio ranges of broadcast stations were not designed to penetrate into space. But Bykov convinced me with a simple argument: the experiment was cheap—what will be, will be.This experiment was placed on one of the unmanned Korabl-Sputniks. Voice reception on the ground after relay was unintelligible. Music was distorted by noise and loss of reception to the point that popular songs were completely unrecognizable. This experiment was probably the reason why Italian ham radio operators reported in 1960 that they had picked up transmissions of rambling speech, groans, and wailing from space.(...)
18 febbraio 2012
17 febbraio 2012
Key WRC-12 highlights:Spectrum for International Mobile Telecommunications (IMT)In addition to the use of the 790-862 MHz in Regions 1 and 3, WRC-12 considered further spectrum allocations to the mobile service, including International Mobile Telecommunications (IMT) to facilitate the development of terrestrial mobile broadband applications in the frequency band 694 – 790 MHz. This issue has been placed on the WRC-15 Agenda together with the need to consider additional spectrum allocations for the mobile service.Increase efficiency in the use of the spectrum/orbit resourceIn addition to the clarification of the notion of bringing into use of satellite network frequency assignments (satellite deployed and maintained at the notified orbital position for a continuous period of ninety days), WRC-12 also mandated the ITU Radiocommunication Bureau to initiate enquiries to administrations to provide information on the movement of satellites. Improved due diligence information, including more detail information on the identity of the spacecraft used for the operation of the frequency assignments was also agreed to foster the long term access and development of the Broadcasting Satellite Service (BSS) in the 21-4-22 GHz band in Regions 1 and 3. WRC-12 improved the satellite coordination by reducing the coordination arc in parts of the most congested spectrum and agreed to look into the possibility of further reductions.Early warning, disaster mitigation and relief operationsWith reference to emergency telecommunications, WRC-12 addressed the application of new technologies, such as IMT and intelligent transport systems (ITS) to support or supplement advanced public protection and disaster relief applications.WRC-12 instructed ITU-R to continue studying aspects of radiocommunications and ICT that are relevant to early warning, disaster mitigation and relief operations and encouraged administrations to consider using identified frequency bands when undertaking their national planning for the purposes of achieving regionally harmonized frequency bands or ranges for advanced public protection and disaster relief solutions.Earth observation’s societal and economic value recognizedWRC-12 focused on “The importance of Earth observation radiocommunication applications” in collecting and exchanging Earth observation data to maintain and improve the accuracy of weather forecasts, which contribute to the protection of life and preservation of property around the world. The Conference reaffirmed that Earth observation applications have considerable societal and economic value and urged administrations to protect the Earth observation systems in the related frequency bands.Meteorological-satellite service gets more bandwidthNon-geostationary satellites are an important part of the space-based Global Observing System and WRC-12 allocated additional spectrum to the meteorological-satellite service.Satellite remote passive sensingWRC-12 updated spectrum use aimed at the future of Earth observation applications with the development of passive sensors flying on meteorological and environmental satellites to monitor water vapour and oxygen spectral lines, which are needed for ice cloud and precipitation measurements and for storm monitoring and climate studies.Oceanographic radars get supportWRC-12 adopted the relevant protection levels for interference caused by oceanographic radars. These radars operate using ground-waves that propagate over the sea to measure coastal sea surface conditions in support of environmental, oceanographic, meteorological, climatological, maritime and disaster mitigation operations and for the surveillance of coastal pollution, fisheries management, search and rescue, beach erosion, and maritime navigation.Maritime servicesMaritime communication requirements to support safety systems for ships and portsWRC-12 addressed maritime communication requirements to support safety systems for ships and port operations. The conference included new provisions in the Radio Regulations to improve satellite detection of automatic information systems using VHF channels.Transmitting frequencies in the VHF maritime mobile bandThe conference also considered the use of new technologies in the maritime service needed to the “Table of transmitting frequencies in the VHF maritime mobile band”, which defines the channel numbering for maritime VHF communications based on 25 kHz channel spacing as well as where digital technologies could be deployed.Aeronautical servicesWRC-12 decided that necessary spectrum would be available for the introduction of applications and concepts in air traffic management that can support data links carrying safety-critical aviation information. These systems will enhance aeronautical communications capability and – in conjunction with more precise navigational capabilities – allow flight routing to be more efficient, resulting in fewer delays, shorter flight times on average, lower fuel costs and reduced CO² emissions. ITU-R will continue to study any compatibility issues between the broadcasting service and aeronautical mobile (route) service in the band 108–117.975 MHz that may arise from the introduction of digital sound broadcasting systems.Aviation safetyThe growth in the aviation industry calls for expanded capacity of mobile communication links that can operate over the horizon. WRC-12 decided that notifying administrations of mobile-satellite service networks shall accommodate the spectrum needed for distress, urgency and safety communications of the global maritime distress and safety system (GMDSS) and for the aeronautical mobile-satellite (route) service communications.Aeronautical mobile (route) serviceAeronautical mobile (route) service systems are critical for various air traffic and flight safety communications. Some of the communication systems, such as traffic information, automatic dependent surveillance-broadcast, and flight information provide easily accessible air traffic information to multiple air traffic managers at the same time, allowing for more efficient use of airspace. The allocation of the frequency band 960−1164 MHz to the aeronautical mobile (route) service is intended to support the introduction of applications and concepts in air traffic management which are data intensive and which could support data links that carry safety critical aeronautical data.Aeronautical mobile to protect other primary services in 37−38 GHz bandA number of countries are deploying space research service earth station receivers in the band 37−38 GHz to support manned near-Earth missions and deep-space missions. WRC-12 decided to exclude the aeronautical component of this mobile service allocation to ensure proper protection of existing and planned space research and mobile services.Aerospace surveillanceWRC-12 addressed the lack of spectrum available for aerospace surveillance and tracking the launch and manoeuvring of spacecraft and provided an additional allocation in the frequency band 154−156 MHz to the radiolocation service in some countries.