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2.4 GHz VS 5.8 GHz? Which is Better?
7237 10 2018-1-27
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pasta10
lvl.2
Flight distance : 216358 ft
United States
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Hello All,
I have the Phantom 4 Pro, and I was wondering what radio frequency is better to use for flying.

Thanks!

2018-1-27
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S.D. Pilot
Captain
Flight distance : 8277736 ft
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United States
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IMO - I have tons of hours flying it and 1000% leave it in automatic. It picks up what it needs. Don't want to limit to one freq.
2018-1-27
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Mark The Droner
Captain
Flight distance : 2917 ft
United States
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it depends on your location.  I see you're in the US.  In general, with no interference, you should do better with 2.4 ghz.  If you're urban, you may very well do better with 5.8 ghz.

Good luck.  
2018-1-27
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luciens
Second Officer
United States
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Not to go into all the radio theory, but the general technical differences are:
- 2.4ghz is a lower frequency so it's less directional than 5.8ghz. Meaning, 2.4ghz radio waves will go around and through objects a bit better than 5.8. So if you start to descend below the horizon, or a bunch of trees gets in between you and the drone, etc., 2.4ghz will be a little more forgiving. 5.8ghz, OTOH, will tend to do the opposite; it's more easily blocked by obstructions, hills, etc. that intervene between you and the aircraft.
- more bandwidth is available on the 5.8ghz band, I believe, so the transmission will be a little better quality. At least in theory, I haven't actually tested this yet with my P4P, but it makes sense.
- 5.8ghz has less other traffic on it than 2.4ghz, so you're less likely to encounter interference on the 5.8ghz band.

So pluses and minuses to each one. According to the specs, the transmitter output power (effective radiated power) is the same on both bands, so theoretically the range should be similar....
2018-1-27
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pasta10
lvl.2
Flight distance : 216358 ft
United States
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luciens Posted at 2018-1-27 18:59
Not to go into all the radio theory, but the general technical differences are:
- 2.4ghz is a lower frequency so it's less directional than 5.8ghz. Meaning, 2.4ghz radio waves will go around and through objects a bit better than 5.8. So if you start to descend below the horizon, or a bunch of trees gets in between you and the drone, etc., 2.4ghz will be a little more forgiving. 5.8ghz, OTOH, will tend to do the opposite; it's more easily blocked by obstructions, hills, etc. that intervene between you and the aircraft.
- more bandwidth is available on the 5.8ghz band, I believe, so the transmission will be a little better quality. At least in theory, I haven't actually tested this yet with my P4P, but it makes sense.

Thanks for the response. Much appreciated!   
2018-1-27
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Punchbuggy
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Flight distance : 395551 ft
Australia
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pasta10 Posted at 2018-1-27 20:11
Thanks for the response. Much appreciated!

To simplify on luciens great response:
In and around built-up areas (with microwaves, wifi hubs, etc), use 5.8 Ghz - it's a less "busy" band, but has short range.
Outside of built-up areas, use 2.4 Ghz - it has a longer range.
2018-1-27
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pasta10
lvl.2
Flight distance : 216358 ft
United States
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Punchbuggy Posted at 2018-1-27 21:58
To simplify on luciens great response:
In and around built-up areas (with microwaves, wifi hubs, etc), use 5.8 Ghz - it's a less "busy" band, but has short range.
Outside of built-up areas, use 2.4 Ghz - it has a longer range.

That makes a little bit more sense to me. Thanks for the reply!  
2018-1-28
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Freightshaker
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Same as your home router. 5.8 has faster transmission speed, although it's wasted because data coming from your ISP is usually much slower so it's a pointless gimmick. And that speed trails off rapidly with distance. 2.4 on the other hand carries further and the drop off is not nearly as steep. Additionally 5.8 is actually a health risk as well. I have 3 routers at home to cover my needs & I've since turned off all the 5.8 GHz radios in all.of them.
9-9 22:44
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Geebax
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Freightshaker Posted at 9-9 22:44
Same as your home router. 5.8 has faster transmission speed, although it's wasted because data coming from your ISP is usually much slower so it's a pointless gimmick. And that speed trails off rapidly with distance. 2.4 on the other hand carries further and the drop off is not nearly as steep. Additionally 5.8 is actually a health risk as well. I have 3 routers at home to cover my needs & I've since turned off all the 5.8 GHz radios in all.of them.

That reply is a mine of misinformation. "5.8 has faster transmission speed", pure bull... and has nothing to do with the radio link used in the DJI aircraft. "Additionally 5.8 is actually a health rishk", more bull.... Show me the proof. The OP has already had his question answered, you added nothing to the conversation except rubbish.
9-9 22:57
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DAFlys
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Flight distance : 410256 ft
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Punchbuggy Posted at 2018-1-27 21:58
To simplify on luciens great response:
In and around built-up areas (with microwaves, wifi hubs, etc), use 5.8 Ghz - it's a less "busy" band, but has short range.
Outside of built-up areas, use 2.4 Ghz - it has a longer range.

Absolutely spot on,  but if you leave it in Auto the AC can choose what it thinks is best at the time.
9-10 01:54
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solentlife
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Flight distance : 1087530 ft
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Freightshaker Posted at 9-9 22:44
Same as your home router. 5.8 has faster transmission speed, although it's wasted because data coming from your ISP is usually much slower so it's a pointless gimmick. And that speed trails off rapidly with distance. 2.4 on the other hand carries further and the drop off is not nearly as steep. Additionally 5.8 is actually a health risk as well. I have 3 routers at home to cover my needs & I've since turned off all the 5.8 GHz radios in all.of them.

Sorry but none of that is correct.

5.8Ghz is often used by industrial areas for intercomms across factories and buildings as there are usually less transmissions using it unlike 2.4.
We had an instance locally where pal of mine using a boosted 5.8 was advised by local Police to stop using boost and return to normal power - it was interfering with the Port Terminals comms. His booster was 'dirty'.

It is true that 5.8 is more likely to be blocked by obstructions - a factor that increases as frequency increases. But we ought to be flying with clear line controller to AC so its a mute point.

In Urban areas without industrial communication setups - 5.8 can be better ... while in rural areas - both 2.4 and 5.8 should fair about same.

I do not have a P4 .. but I did use a P3S which used both frequencies (albeit WiFi based) but they worked fine.
9-10 02:45
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