Malfunction and Crash 24 hours of flight
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2780 51 2019-2-18
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JJB*
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bikoo Posted at 2-21 07:17
i just wonder what is the enough GPS should be ? some time's i get 13 some times 18 some times 20 so what is the minimum ?

From a high number dropping to 6 or 7 sats ; risky situation to achieve good GPS position.
So in your case 13, 18 and 20 > no problems!

cheers
JJB
2019-2-21
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hallmark007
Captain
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Ireland
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bikoo Posted at 2-21 07:17
i just wonder what is the enough GPS should be ? some time's i get 13 some times 18 some times 20 so what is the minimum ?

If you calculate the safe amount to fly you should have 11, your sat receiver receives both glonass and gps sats , you need minimum 6 of one type to fly so if you have 11 you have guaranteed 6 so safe to fly .
2019-2-21
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JJB*
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DJI uses a chip wich combines GPS and GLONASS at the same time, so no need to have 11 (wich means minimum 6 each). So 6 is enough but more is better as you never know during flight how many you will loose.
So my flights are 10 or 11 minimum, just to be safe.

cheers
JJB
2019-2-21
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Eric13
Second Officer
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Interesting that the OP never bothered to provide the flight record. That happens often in threads about lost drones.
That's like going to the doctor and complaining about pain but not telling him where it hurts.
It can only be a guess why the OP doesn't want this to be looked into any further...


2019-2-21
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bikoo
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hallmark007 Posted at 2-21 10:37
If you calculate the safe amount to fly you should have 11, your sat receiver receives both glonass and gps sats , you need minimum 6 of one type to fly so if you have 11 you have guaranteed 6 so safe to fly .

Noted, Thank you
2019-2-22
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bikoo
Second Officer
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JJB* Posted at 2-21 13:06
DJI uses a chip wich combines GPS and GLONASS at the same time, so no need to have 11 (wich means minimum 6 each). So 6 is enough but more is better as you never know during flight how many you will loose.
So my flights are 10 or 11 minimum, just to be safe.

Thanks for the info
2019-2-22
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*DM*
Second Officer
Flight distance : 507087 ft
United Kingdom
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Flight logs??
2019-2-22
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Lucas775
First Officer
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bikoo Posted at 2-21 07:17
i just wonder what is the enough GPS should be ? some time's i get 13 some times 18 some times 20 so what is the minimum ?

Listen to the voice
2019-2-22
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akozc
Second Officer
Flight distance : 2019951 ft
Macao
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JJB* Posted at 2-21 13:06
DJI uses a chip wich combines GPS and GLONASS at the same time, so no need to have 11 (wich means minimum 6 each). So 6 is enough but more is better as you never know during flight how many you will loose.
So my flights are 10 or 11 minimum, just to be safe.


If u read carefully the user manual it clearly says  min number of the satellite need before safely takeoff.
2019-3-13
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CHAPPERS70
lvl.2
Flight distance : 8517 ft
United Kingdom
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Im new to all this, but surely if your screen goes blank and his controller is saying "CONNECTING' then manually getting the drone back would have not worked either. The drone would have been non responsive to any inputs from the controller. TBH because of my inexperience without seeing my map on my screen I wouldn't be able to get mine back manually if this was a possibility, as I wouldn't have a clue what direction it was going even in line of sight.
2019-3-13
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hallmark007
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CHAPPERS70 Posted at 3-13 04:47
Im new to all this, but surely if your screen goes blank and his controller is saying "CONNECTING' then manually getting the drone back would have not worked either. The drone would have been non responsive to any inputs from the controller. TBH because of my inexperience without seeing my map on my screen I wouldn't be able to get mine back manually if this was a possibility, as I wouldn't have a clue what direction it was going even in line of sight.

If Controller disconnects your craft will RTH , if you lose video downlink, just hit RTH , so no real need to fly manually.
On radio disconnect craft will begin RTH after 3 seconds. If you lose only video downlink you will still have map and radar to fly home .
2019-3-13
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JJB*
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CHAPPERS70 Posted at 3-13 04:47
Im new to all this, but surely if your screen goes blank and his controller is saying "CONNECTING' then manually getting the drone back would have not worked either. The drone would have been non responsive to any inputs from the controller. TBH because of my inexperience without seeing my map on my screen I wouldn't be able to get mine back manually if this was a possibility, as I wouldn't have a clue what direction it was going even in line of sight.

see this > https://forum.dji.com/thread-144696-1-1.html

if both of your compasses are oke then use this attitide/compass indictor to fly home.

cheers
JJB
2019-3-13
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