What is the frequency range? 64-1,700MHz, although straw poll tests on pre-production units indicate that units can be stretched down to 51.5MHz or so. What’s better than serving gin and tonics at a party? Having a whole gin and tonic bar, that’s what. A few weeks ago I went to an event for Beefeater in San. It has tons of inputs, offers Anthem's own ARC room. Facebook is desperate to do business in China, but authorities in the country are increasingly comfortable with shutting out foreign companies and tightening. Whats. App Becomes the Latest Victim of China's New Wave of Internet Censorship. Facebook is desperate to do business in China, but authorities in the country are increasingly comfortable with shutting out foreign companies and tightening restrictions on internet communications. On Tuesday, Facebook’s only major product that is still permitted by authorities fell victim to the “Great Firewall” and all signs indicate that we’re entering a new age of censorship. Winnie the Pooh, the adorable cartoon bear with an obsession for honey, has been censored in China. It has reportedly been partially blocked by the massive filtering system that authorities use to limit free speech online. Users have found themselves unable to send photos, videos, and in some cases text messages. Security analysts confirmed to the Times that the disruptions were originating from the government. Nadim Kobeissi, an applied cryptographer at Symbolic Software, tells the paper, “according to the analysis that we ran today on Whats. App’s infrastructure, it seems that the Great Firewall is imposing censorship that selectively targets Whats. App functionalities.”Even though Whats. App is incredibly popular around the globe—it has 7. China. Still, the app is popular with citizens who want to communicate with the outside world. That could be one reason that it has suddenly been targeted. According to research by Citizen Lab, there has been a concerted effort to block certain communications online following the death of China’s only Nobel Peace Prize winner, Liu Xiaobo, on July 1. ![]() Citizen Lab found that for the first time, images were being blocked in one- on- one chats within We. Chat. The homegrown messaging app by Tencent boasts 7. Accounts that are registered to phone numbers from mainland China were unable to view at least 7. Facebook warned investors last week during an earnings call that it’s running out of space to insert ads while still maintaining an acceptable user experience. After hitting 2 billion users, it’s also running out of the potential for growth. China is one of the few markets left to be tapped, but authorities have consistently resisted Mark Zuckerberg’s appeals. Reached for comment a Whats. App spokesperson told Gizmodo, “We are not providing a comment on this topic.”But it’s not just Facebook that has problems with China, major Western technology companies like Google and Twitter are also shut out of the country. China’s government has been resistant to the explosion of the internet from the beginning, but it made certain allowances knowing that completely blocking the internet wasn’t an option in the modern world. Now, the growth of its own technology sector has given it a sort of parallel internet that can be controlled from within. Domestic companies like Baidu and Tencent offer search, microblogging, messaging, and other alternatives to the most popular web services. They also can’t tell Chinese censors “no.”Residents of China have always used VPN services to access the unrestricted internet, but greater efforts to block access to VPNs and remove them from online marketplaces have been enacted this year. On top of that, a confusing new cybersecurity law has left companies uncertain about what is and isn’t allowed on networks within the country’s borders. We’re not entirely sure why Whats. App is being disrupted at the moment, or if a permanent ban is in its future. But China is very clearly signaling that it has its own internet now, and that’s a major problem for its citizens. Technical FAQ . What is the frequency range? A. 6. 4- 1,7. 00. MHz, although straw poll tests on pre- production units indicate that units can be stretched down to 5. MHz or so. Upper frequency limit is beyond 2,0. MHz. In testing, we have determined that there is a gap between about 1,1. MHz and 1,2. 70. MHz where the design of the local oscillator VCO, PLL and divider chain in the tuner chip don’t provide seemless coverage. Q. What can the FUNcube Dongle receive? A. The FUNcube Dongle has no restriction on modulation schemes: it is limited only by the application program running on the host computer. As long as the signal fits within about an 8. Hz bandwidth, the FUNcube Dongle is capable of receiving the radio signal. So, for analogue reception, as well as narrow band FM and SSB, it is also possible to receive, for example, sound subcarriers for TV broadcast. Similarly for data reception, as long as a data demodulator has been written that will accept standard soundcard quadrature I/Q reception, that will work too. Q. What is the bandwidth? A. 9. 6k. Hz is the quadrature sampling rate. Once the ADC’s decimation filter skirts have been taken into account, you have about 8. Hz. Q. What applications work with the FUNcube Dongle? A. As well as the forthcoming FUNcube front end application, any application that understands a standard stereo soundcard configured for quadrature, or I/Q, reception should work. Examples include Linrad, Spectravue, Rocky and M0. KGK. Q. What is the sensitivity? A. Each unit is tested for 0. V for 1. 2d. B SINAD NBFM at 1. MHz and 4. 35. MHz. Q. What operating systems are compatible? A. Currently Windows 2. SP4, XP 3. 2 bit, and Vista and Windows 7 3. The sound card element works with Mac OSX and Ubuntu 1. Q. What’s the difference between versions? A. There are two versions, the Base and the Pro models. The Base model is frequency restricted and designed as an entry level minimal cost device, targetted for educational outreach. The Pro model is unrestricted in its frequency coverage. Q. Can I upgrade a “Base” version to a “Pro” version? A. At present, the upgrade will require a return of the device so that it can be modified to accept “Pro” firmware. Q. Is the firmware upgradeable? A. Yes, already the devices can have their firmware upgraded in a matter of a few seconds by the user. However, Pro firmware and Base firmware are not interchangeable. Q. Do I need front end filters? A. Some people have experienced front end overloading with the FCD at VHF in particular. Although there is fixed and programmable front end filtering already on the FCD, at VHF it’s not very selective. Typically the symptom is that it will appear deaf: this is the noise floor rising due to an overloaded front end. You can see this in Spectravue as when you plug in the antenna the noise floor rises potentially several tens of d. B. Although reducing gain can help, of course innevitably this is at the expense of the unit’s native sensitivity. At this stage it is worth pursuing external filtering options. We’re working on some solutions already, but some readily available commercial solutions include Hamtronics’ LNP preselector, SSB Electronics SP- 2. DCI’s DCI- 1. 45- 2. H and DCI- 1. 45- 4. H. As these are not exactly cheap, I have been working on some ideas here that you may like to try: http: //www. We’re also investigating at a reasonably priced active no- tune solution. Q. I am having trouble upgrading the firmware. What can I do? A. The most reliable way to do this is from Windows. It is essential that, after placing the unit in bootloader mode, any other software that might access the FCD is shut down before you attempt to update the firmware. Q. What support options are there? A. You can email me using my Paypal email account, or alternatively there is a very active FUNcube Yahoo group that often provides answers more quickly!
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