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Spark distance Issue
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<blockquote data-quote="Dronason" data-source="post: 12394" data-attributes="member: 553"><p>It is clear that using a radio link like wifi results in something shared by many device, vary a lot in time and location and so is not the most reliable way to connect to a drone over a long distance. But it is cheap technology to build and certify. What is written in the DJI disclaimer document is a mix of engineers and pilots advises but a polishing layer by lawyers. Wifi is so, today 1500m range, next day at same place it can be half.</p><p></p><p>Regarding Bluetooth, you will have issue with Bluetooth if the link to the Spark is at 2.4G. As Spark can probably sense Bluetooth, there is great chance it will switch to 5.8G and only the link RC to phone will be at 2.4G but as it is short distance, it is less impacted. It will probably result in some lag when Bluetooth broadcast some data.</p><p></p><p>Finally the OTG cable is not exactly a myth, but not a wonder solution. It removes for sure one wifi connection and any delay that could be added by the phone. It don't really increase the range but it can remove some of interference. On the other side, some functions are limited and it is not supported by DJI as it designed for their Goggles. The day there is a conflict between OTG and their Goggles, you know the answer already. </p><p></p><p>Personally I prefer to use <a href="http://www.ebay.com/itm/Antenna-Signal-Range-Booster-Extender-for-DJI-Mavic-Pro-Remote-Controller-Black-/172489255012" target="_blank">windsurfer antenna reflectors</a>, disable Bluetooth and wifi nearby. I had flown regularly up to 1000-1500m in out of city area, at 2.4G or 5.8G. But in some urban area, whatever you can try, the distance will remain a fraction of that. It is just what wifi is and why Mavic / Phantom (and many others) using improved radio communication will continue to have success even if more expensive.</p><p></p><p>My 5c</p></blockquote><p></p>
[QUOTE="Dronason, post: 12394, member: 553"] It is clear that using a radio link like wifi results in something shared by many device, vary a lot in time and location and so is not the most reliable way to connect to a drone over a long distance. But it is cheap technology to build and certify. What is written in the DJI disclaimer document is a mix of engineers and pilots advises but a polishing layer by lawyers. Wifi is so, today 1500m range, next day at same place it can be half. Regarding Bluetooth, you will have issue with Bluetooth if the link to the Spark is at 2.4G. As Spark can probably sense Bluetooth, there is great chance it will switch to 5.8G and only the link RC to phone will be at 2.4G but as it is short distance, it is less impacted. It will probably result in some lag when Bluetooth broadcast some data. Finally the OTG cable is not exactly a myth, but not a wonder solution. It removes for sure one wifi connection and any delay that could be added by the phone. It don't really increase the range but it can remove some of interference. On the other side, some functions are limited and it is not supported by DJI as it designed for their Goggles. The day there is a conflict between OTG and their Goggles, you know the answer already. Personally I prefer to use [URL='http://www.ebay.com/itm/Antenna-Signal-Range-Booster-Extender-for-DJI-Mavic-Pro-Remote-Controller-Black-/172489255012']windsurfer antenna reflectors[/URL], disable Bluetooth and wifi nearby. I had flown regularly up to 1000-1500m in out of city area, at 2.4G or 5.8G. But in some urban area, whatever you can try, the distance will remain a fraction of that. It is just what wifi is and why Mavic / Phantom (and many others) using improved radio communication will continue to have success even if more expensive. My 5c [/QUOTE]
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