Antonio76
 Captain
Flight distance : 144403 ft
Denmark
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Mark The Droner Posted at 2017-10-4 04:35
Could you expound on this or provide a link? Not trying to argue, just trying to get my facts straight. My understanding is that the 2.4 ghz signal which connects between the controller and the mobile device is certainly a wifi signal. Otherwise the mobile device would not be able to connect. And the 2.4 ghz signal which connects between the AC and the controller is also a wifi signal, as that is how it was on the P2V. Also, the P3S manual calls the connection between the AC and the controller a wifi signal specifically (see WiFi Video Downlink page 33). However, my understanding is the frequency for the latter connection was moved a bit lower in the more recent devices so that it's slightly out of the frequency range available for most if not all mobile devices and therefore the signal is not seen as a choice when perusing the mobile app for wifi signals.
My understanding with Wifi is that although it's a stable means to transmit video, it has an inherent weakness due to its need to "check" the signal - and that's why distance is often disappointing relative to the clean 5.8 ghz control signal. DJI's lightbridge solved the wifi distance problem at least partly because it eliminated the check.
Well, I don't know specifically about the P2V or the P3S. Just downloaded the manual for the P3SE and yes, there is a mention of WiFi, and it says also "Tap to set the SSID and connection Password for the WIFi connection" (between the aircraft and the remote controller-doesn't say anything about the device). So this is undoubtedly a WiFi Protocol. But this seems to have been abandoned in newer drones, as I haven't seen it for the P4 or P4P. I would like to know if this WiFi Video Downlink is only between the aircraft and the remote, or if it can be picked up by a WiFi device like a tablet, or even a computer, and if the signal is directly readable, that is, would one be able to see the video directly on the screen of such a connected computer or device? Anyway, I still think that the device one uses with the remote controller doesn't need to be connected to WiFi, and this was the point. (and unless I'm wrong on this too due to some P3 peculiarity, I think that the device and the controller do not connect via WiFi, they connect via a USB cable.
Thanks a lot for your input regarding the P3, I love learning things I ignored! |
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