I don't understand why you are even asking this question? Not sure which country you are from or what restrictions you have, but here in the UK you have to keep your drone within line of sight. And I've recently learned that should I need additional range I can mount the Y/U with the parabolics and I can max out at about 2.2 Km in the outback, unfortunately peaking with control (meaning that despite video choppiness I get AC disconnection before video feedback black outs). and I prefer my cheap parabolics at my poor quality Yagi/Udas, as on the limit you start to lose video backback instead of having to deal with much more scary AC disconnection. Thus using the 5.8 GHz band I am pretty confident I can make to 850m or thereabouts in the cities and almost 2 kilometers in the countryside. Meanwhile with 5.8 GHz you're pretty much clear of specific channel interference, in fact what i've discovered is that 5.8 is outside of the home/office Wi-Fi routers and seem to be more affected by general electromagnetic pollution rather than specific usage, probably picking up cross-channel interference and resonance. The only solution at that point is to take note of channel usage bars in that area and head back, land the AC and set another channel that is possibly as clean at your homepoint as well at the furthest point you reached. Thus your connection can last only few hundred meters before you enter an area of a strong Wi-Fi signal or a concurrent signal starts modulating (which disrupts your signal workings). My conclusion was to always stick to 5.8 GHz using the parabolics in every environment.Ģ.4 GHz can bring you a better yield, providing you don't find any other interfering source in the flight path. I've flown in several environments, including cities. you certainly did not fly in urban areas, did you ? 2Km is a good range, i seriously don't dare to fly that far, just trying to the MM out of my sight that all. The parabolics also seem to be not adding tension onto the antennas,while being a cheap attempt. Quite some work you have done there in combining both. Parabolic antennas (very precisely manufactured) are the "only" way in space research to receive and transmit signals far away, for example to control satellites. Unfortunately, I very often had signal interference in the range of 300 - 400 m, and if this area was covered well, I was also very satisfied with the MM (by using the range extender). The MM actually has a very limited radio performance, just WiFi.Īnd yes, I also made direct comparisons, on the same day, in the same position, so largely the same conditions.Īs I already wrote, you actually have to "aim" with the antenna positions exactly in the direction of the MM, because the spread of the radio waves in other directions will certainly be weakened, but "intensified" in the open direction of the parabolic mirror. "a bit of foil" doesn't sound very convincing, of course. If the range could be increased to that extent have you ever wondered why DJI do not sell them on their store or indeed even make them for their own drones? While with the parabolics I was losing video feedback completely at 2 Km I was still in "loose" control of the drone, contrary to the Yagi/Uda where even pointed the best as I could for a 2 km range I was getting a more reliable video stream but was continually having signal disconnection, causing the drone to drop off and enter RTH countdown.Īre you 100% sure it was a bit of foil that gave the extra 30%? Did you land the drone then take them off and fly to exactly the same place following exactly the same flight path straight after to compare? And 30% of what distance? I used them and did direct comparisons on the Spark, Mavic Pro, Phantom 3 Pro - they made little to no difference and most definitely not 30%. A good set of Yagi/Uda might add further yield or give better results but the beam is narrower and in my experience better suited at receiving. If you'd ask me the safest bet are the parabolics as they are cheap, convenient and also add something to the remote presence. I have done a test with Yagi/Uda and parabolics combined and I reached 2.2 Km. My Yagi/Udas didn't offer any significant range gain over the parabolics but narrowed the beam so that I've had to use precise aim, with the parabolics instead I could just roughly orient myself and they would just work. At my flying spot overlooking the mine (you can find video of the place in this forum) I had a range of about 1.2 Km without parabolic reflectors w/ 5.8 GHz, and about 2 Km w/ the parabolics.
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