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DJI range

adithyay328
By adithyay328
in Hobby Electronics
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Go to solution Solved by Hackentosher,

It's probably just the protocol they use, it's not wifi. Also the output power of the transmitter is more important than the gain of the antennas. 

Posted

Can someone explain to me how the hell a DJI phantom 4 gets 4 miles of range ON 2.4 GHZ?! The power is rated @ 26dbm. I asked b/c compared to the XBee wifi module, w/ transmits @ 13dbm, this is monstrous range; the XBee only gets 300 feet of range. Does the power diff make that much of a difference? PLS EXPLAIN!

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Posted

dBm, just like dB is a logarithmic scale with base 10. Read more here https://en.wikipedia.org/wiki/DBm

Quote or tag if you want me to answer! PM me if you are in a real hurry!

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Posted
  • Solution

It's probably just the protocol they use, it's not wifi. Also the output power of the transmitter is more important than the gain of the antennas. 

ASU

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Posted

Pmw = 1mw * 10(PdBm/10)

PdBm = 10log(Pmw/1mw)

 

So:

13dBm = ~20mw

26dBm = ~400mw 

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Posted
5 hours ago, Dennisdn said:

Is this a good drone as first drone? http://bit.ly/2gJQF0R 
Or is the Mavic better?

Unless that link is an inspire 1 or 2, the mavic is better. Also post in the multirotor megathread next time. 

ASU

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