Recent content by Raffaello_IZ0QWM

If you want I can talk about my experience but it is still under study because there are situations to be understood yet. In any case, I'd like to understand what kind of polarization they used on the antennas of the drone's arms. It appears to me that the polarization is only horizontal and...

The C2 radiocontroller ( FCC ID SS3-RC1B1809 C2 (Remote Controller) by SZ DJI TECHNOLOGY CO., LTD ) the antenna gain should be written here. When I go back to home I take an eye. About 2dBi should be at 2.4GHz. Something more at 5.8GHz. The photos are taken from the video

I tested this kind of antenna and is really 8dBi better then the 2.0 about of the stock antennas. https://www.ebay.it/itm/304331562683?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=rCc3-B-LT0u&sssrc=2349624&ssuid=aSJRHAyYRWa&var=&widget_ver=artemis I also tested this one, but is not really...

So today I've done the modification of my DJI RC. Now I have to check the stock antennas. I think I will modify with an SMA.

Well done well, I think I will put two female SMAs where I can install different antennas and I think I will also modify the original antennas with male SMA so that I can install them externally to the DJI RC. I'm taking the DJI RC to the office on Monday and let's see.

ahahaha no reserved? There is nothing confidential. On the RC-N1 I used an home made dual biquad antenna that can be used in both horizontal and vertical polarization. I made a modification so that I can continue to use both the original antennas and connect the self-made antenna. I don't...

In another thread you can see the DJI RC opened, if you want to take a look. https://mavicpilots.com/threads/dji-rc-mini-3-with-display-controller-disassembly.126425

Oh I already know that the white one is for TX/RX antenna and the black one is for RX only antenna. I tested with spectrum analyzer and the confirmation of this there is also in the FCC reports of RC-N1. What I want to know is the right polarization of the antennas. I still don't know the...

Gary and Maximus the distance between the two antennas in the center is 54mm. Here you find some measures. I'm sorry I'm not in the office where I have the antenna design software.

MaximusCZ the antennas are both dual band. I think Gary needs the distance between the two antennas?

Thanks Maximus for sharing, I opened it too, but not yet modified for the external antennas. I recreated the antennas on simple antenna design software and the polarization looks vertical but very strange. As you can see, the hot pole is only a vertical bar that starts from the center...

Before that mod I would like to be sure about the polarization of the drone antennas. I hope to do soon test in my laboratory.

Oh they are not made by me. I found on Internet.

Now I post two videos more. One is comparative with MINI 2: https://tinyurl.com/3s3hhktp And one is a very long, long range test https://tinyurl.com/a8xvvryv

I think you mean the DJI RC (New DJI RC with Mini 3). From what I measured, it has only one antenna that can transmit. I never seen in my tests the other transmitting. Even on the drone I only saw two antennas in transmission but not at the same time. They never switched while it was on in...