RTH at 700m in FCC

[Fiete]

I flying my Drone yesterday (night flight) i fly in fcc with Fake GPS app and the controller lose connection to the Drone at 700m away I thohut fcc is much better for long distances?

My RC is connected to my phone with "OTG"

 

[lmel2005]

DJI gives for 5.8g, 500m maximum range in CE mode.

700m is more than that, and the reason is FCC mode.
There are many reasons why someone cannot reach max range, but if you where in CE mode, your range could be 200m or less.

 

[Dronason]

Using app like Fake GPS is not making the Spark and its RC using FCC mode. Only your phone is affected.
I just tried with Wi-Spy signal analyzer using channel 161 in manual mode. If I use Fake GPS, on the map it shows my phone is in US but the Spark and home points are at my home (Switzerland). With or without Fake GPS, the signal level at channel 161 is the same.
There would have been a significant difference if the Spark would be in FCC mode.
Having channel 12 and 13 or not is not meaning that the Spark or RC is in CE or in FCC mode, it is just indicating that the phone is.
That app helps in nothing and can create even more confusion and risk IMO.

 

[webvan]

Just use the DJI MOD 2.0 available in this forum ;-)

 

[Dronason]

DJI MOD 2.0 ???
Available on this forum ???
I don't think it is provided by the forum, probably by you or its users.

 

[lmel2005]

Using app like Fake GPS is not making the Spark and its RC using FCC mode. Only your phone is affected.
I just tried with Wi-Spy signal analyzer using channel 161 in manual mode. If I use Fake GPS, on the map it shows my phone is in US but the Spark and home points are at my home (Switzerland). With or without Fake GPS, the signal level at channel 161 is the same.
There would have been a significant difference if the Spark would be in FCC mode.
Having channel 12 and 13 or not is not meaning that the Spark or RC is in CE or in FCC mode, it is just indicating that the phone is.
That app helps in nothing and can create even more confusion and risk IMO.

I think it has been discussed before.

Using DJI go 4 app, we can see (and alter) our drone's settings, not our phone's settings.

If you see 11 channels, it is the DRONE using 11 channels, to communicate with RC.

Almost all the info, on djigo4 app, is provided by the drone's telemetry system.

 

[webvan]

DJI MOD 2.0 ???
Available on this forum ???
I don't think it is provided by the forum, probably by you or its users.

Huh! Sounds like Dronason partied too hard on Saturday night, hehe...

 

[Dronason]

I think it has been discussed before.

Using DJI go 4 app, we can see (and alter) our drone's settings, not our phone's settings.

If you see 11 channels, it is the DRONE using 11 channels, to communicate with RC.

Almost all the info, on djigo4 app, is provided by the drone's telemetry system.

And no change in signal level, how you explain it? At 5.8G, the difference is supposed to be huge.

 

[Dronason]

Huh! Sounds like Dronason partied too hard on Saturday night, hehe...

Yes, highly possible

 

[lmel2005]

And no change in signal level, how you explain it? At 5.8G, the difference is supposed to be huge.

There seems to be a significant increase in signal level, because range is reported to be 2 to 4 times greater than in CE mode.

If someone has the equipment, to measure the real strength of the transmission (drone and RC), it would be an interesting conversation.

 

[Dronason]

There seems to be a significant increase in signal level, because range is reported to be 2 to 4 times greater than in CE mode.

If someone has the equipment, to measure the real strength of the transmission (drone and RC), it would be an interesting conversation.

Done in post #3 in a non high accurate way using Wi-Spy tool. Best would be to have a RC modded for external antenna and measure real power output. That's on the todo list for this summer.

 

[lmel2005]

Done in post #3 in a non high accurate way using Wi-Spy tool. Best would be to have a RC modded for external antenna and measure real power output. That's on the todo list for this summer.

I think measurements must be done by an RF specialist, with appropriate equipment and conditions.

But you could post your wi-spy measurements too.
It would be interesting.

 

[Dronason]

I think measurements must be done by an RF specialist, with appropriate equipment and conditions.

But you could post your wi-spy measurements too.
It would be interesting.

Sorry, I don't have a EMC lab with shielded room for such kind of measurements
Just needed to convince me it will not go for FCC mode this way.
When I will get RF power output measurement on a modded RC, I will post results for sure.

 

[lmel2005]

Sorry, I don't have a EMC lab with shielded room for such kind of measurements
Just needed to convince me it will not go for FCC mode this way.
When I will get RF power output measurement on a modded RC, I will post results for sure.

Flying from my backyard, I have 200m to 250m range in CE 5.8g mode.

With the "FCC trick" I can fly for more than 1000m from the same backyard. That's enough for me, and all this RF signal measurements subject is without much interest.

But it could be interesting for technical reasons.

 

[Fiete]

I try the Mode App but aways have signal issues

 

[webvan]

Turned off Bluetooth ?