Hey everyone. I'm thinking about maybe replacing my stock transmitter 5.8 antenna with something with a little more gain. I don't want to get into boosters or anything. Does anybody know the gain (in db) of the stock antenna? I have successfully flown out to 1800' out at 370' high. This was my best distance. I often have weak signal issues with the 5.8 at around 500' depending on antenna position and the quads orientation. 2.4 has never dropped or become weak. Thoughts?
Antenna gain?
- Thread starter Ricky81385
- Start date
Try using a Windsurfer. You can buy one or make your own. Just make sure you get the right one for 5.8.
dirkclod
Premium Pilot
I believe this is transmitter output, not antenna gain. This however is useful information, not sure how I didn't catch this earlier. Thanks for the post.
dirkclod
Premium Pilot
Sorry thought that was what he asked .I saw that comparing the 4k with the Standard . It has 27 dbi .
I don't believe the stock is 27dbi if it really is then its pathetic .because then you will be getting 5km range. With no range problem.
Because if the ARGtek antenna is a 7dbi people are getting about 1km.
Just my 2c. I think the stock antenna is only 3dbi .
I just purchased 2x 11dbi 2.4ghz antenna to replace the stock just trying to source a 11dbi 5.8ghz.
dirkclod
Premium Pilot
I think I was speaking of something different Nab.In my mind I wasn't seeing dbm but dbi . Just went back to their site and is this what I saw..
From the DJI site
My bad..again Sorry
After looking at the DJI site, the 2.4 transmitter is 27 dbm and the 5.8 transmitter is 19dbm. I would expect somewhere around 3 dbi for the 5.8 antenna. I'm just going to try and find a small 5.8 antenna with a high dbi rating. In the mean time, I built a windsurfer. I will post my results in the main p3s discussion page.
It's cool buddy. I'm lookng forward to test my 11dbi 2.4ghz antenna its not gona give me range but I'm hoping some good wifi signal downloading.
EBay and aliexpress have 11dbi 5.8ghz antenna for sale.
5.8ghz = for range. Looking to increase range increase the 5.8ghz antenna
2.4ghz = wifi signal.
Just extra for information if a newbie has to read our posts
The gain of the standard antenna is only 2 dbi.
WM3211503 Phantom 3 Standard RF Exposure Info RDG150320002-00A SZ DJI TECHNOLOGY CO., LTD
Same thing for the 4k
WM3251511 Phantom 3 4K RF Exposure Info RDG151112002-00A SZ DJI TECHNOLOGY CO., LTD
And approximately 3dbi for the phantom SE antenna gain.
W3281705 Phantom 3 SE RF Exposure Info SZEM170500530704-MPE SZ DJI TECHNOLOGY CO., LTD
WM3211503 Phantom 3 Standard RF Exposure Info RDG150320002-00A SZ DJI TECHNOLOGY CO., LTD
Same thing for the 4k
WM3251511 Phantom 3 4K RF Exposure Info RDG151112002-00A SZ DJI TECHNOLOGY CO., LTD
And approximately 3dbi for the phantom SE antenna gain.
W3281705 Phantom 3 SE RF Exposure Info SZEM170500530704-MPE SZ DJI TECHNOLOGY CO., LTD
Oh boy, got my laugh for today with all the Answers to such a simple question, I am curious tho where on earth did you find some 11DBI Antennas for a Phantom 4 I need some of those puppies
Idk if the 4 uses 2.4 or 5.8 GHz, but for the 2.4 I had this opened in my browser:
Antenna 2.4GHz 12dBi Omni Directional Dipole w/ RP-SMA | 22 inches
I don't think it would be hard to find your 11 dBi (in case the p4 uses 5.8 GHz)
Edit: I found 10 dBi for 5.8 GHz : Antenna Dual-Band 2.4GHz 5GHz 10dBi Panel w/ RP-SMA connector
Last edited:
N017RW
Premium Pilot
This [gain] is typical for any 1/4 wave dipole.
Added gain is achieved by altering the radiation pattern 'lobes' in the vertical or horizontal planes or a combo of both. No 'free lunch' sort-of-speak.
Depending on the gain, it often requires more attention to the reduced pattern, as compared to an omni type, to achieve consistent 'connection'.
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