jeffdj
lvl.3
Flight distance : 820102 ft
Australia
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Started to do some serious tests on my Phantom 4 Pro Plus with regard to control and video transmission range before I embark on commercial work. Have a Phantom 3 Pro and Mavic Pro both of which give excellent range ie over 3km.
Tested today at a nearby beach that I have used for Mavic Pro and Phantom 3 Pro tests.
Conditions
Very light winds, bright sunny conditions, no visible sources of interference.
Test 1 Phantom 4 Pro plus, 2.4 signal auto, altitude constant 60 m, good signal no interrupts until 2.5km then the odd glitch but no problem, signal strenth low message, 1 bar at 3km continue to fly to 3.6km then return on track out, odd glitch but no problems.
This was ok but disappointing as I had flown my Phantom 3 pro to the same distance, I expected to go to at least 5km.
Second test, 5.8 signal auto. Same height and course as test 1, good signal until 1.5km then signal drops to 2 bars and at 2.km lose both video and control signal return to base initiated by Phantom 4 Pro Plus, after waiting a few seconds I take over control and return.
These results are way below what the DJI information states about the Phantom 4 Pro Plus. All pre checks where ok and antennae always orientated to max effect as per DJI.
Checking the manual settings in the HD menu I noticed that you can set the data rate to 4mb to increase range but even then it is only 3km according to the menus. At 6mb it is 2km. How is this compatible with the stated range of either 5 or 7km? Also does the lower bit rate apply when the auto switch is on? I am in Australia and not sure which transmission power is relevent, ie US or EC.
All other functions seem ok except video caption which no matter which switch position, green or grey I get no SRT folder and files on the SD card. I have not had this problem with either the Mavic Pro or Phantom 3 Pro.
The quality of the video and photos from the new camera are a real bonus but other aspects of the Phantom 4 Pro Plus are below par. Also although the new built in screen is great in strong sunlight it wont even let you read downloaded Phantom 4 Pro manuals because there is no app installed. I believe you cannot install any new apps into the new screen/tablet.
I think DJI have not really thought through the new Pro Plus system, I hope they fix these issues.
Questions,
How do i fix the poor range issues, the lack of SRT files and the inability to read my downloaded manuals or install new apps?
Do I return this unit for a replacement?
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