I use a true rc 2.4 singularity on my taranis x9d+ works wonderfully. Range tested over 2 miles. I only use the one CP antenna, and stick to linear on my aircraft (mostly wings). There's never a drop due to orientation so turning at range isn't as dangerous.
Thanks for the comment. It is always tricky to try and resolve something like this into a short video that most viewers will understand. Let me know if there are other antenna and radio misconceptions in the hobby that could do with a video... happy flying!
Good video on what can be a complex subject. I specifically liked the fact that you provided a link to a place where one could get some more advanced information on the subject.
Hi there back in the 90's I had 27mhz for mi model boats and we had a telescopic antenna on the tx and a long wire antenna on the boat. So the 24g is much safer for the eyes as people don't have the meter long antenna waving around as they sail
One important thing is you _might_ need right hand polarization at one end and left on the other, RHCP LHCP. Think of two screws facing each other. The antennas might be more _mixed_ polarization than circular. I've been a radio ham for 37 years.
Before I even clicked it was "because nulls" as my answer and the need for a diversity setup. The CP antennas having a -3db and -6db point which could seriously hamper long range in certain orientations. But long range rigs generally dont go full acrobatic and crazy at distance so putting a CP antenna in a vertical orientation would likely work fine and never risk pointing a null back at the RC transmitter. Combine that with a well setup return to home and your orientation for CP antennas is likely still good. Pretty sure 1/4 wavelength design can be applied to circular polarized antennas because look at the absolutely tiny CP antennas that are showing up from True RC and others. Would be interesting to see something similar applied to the 1.3ghz and the MHZ realm of products. Basically a VAS style RH CP element that drops down over the linear element of a 900mhz ot 1.3ghz antenna.
I use a true rc 2.4 singularity on my taranis x9d+ works wonderfully. Range tested over 2 miles. I only use the one CP antenna, and stick to linear on my aircraft (mostly wings). There's never a drop due to orientation so turning at range isn't as dangerous.
I am a qualified radio amateur , a really informative and useful video to explain concepts related to polarisation of antennas. Nice one! 😃👍
Thanks for the comment. It is always tricky to try and resolve something like this into a short video that most viewers will understand. Let me know if there are other antenna and radio misconceptions in the hobby that could do with a video... happy flying!
Good video on what can be a complex subject. I specifically liked the fact that you provided a link to a place where one could get some more advanced information on the subject.
As usual Lee a great explanation of a complex subject. Hope all is well with you and your family.
great work as allways lee.keep it up and stay safe buddy.
Hi there back in the 90's I had 27mhz for mi model boats and we had a telescopic antenna on the tx and a long wire antenna on the boat. So the 24g is much safer for the eyes as people don't have the meter long antenna waving around as they sail
Worth mentioning that the DJI system is using 2 circular polarised antenna for the control link on the aircraft, with 2 linear on the handset...
Very very interesting !! I've been looking for an answer for this question for a long time , and there you have it ! Thank you very much!
One important thing is you _might_ need right hand polarization at one end and left on the other, RHCP LHCP.
Think of two screws facing each other. The antennas might be more _mixed_ polarization than circular.
I've been a radio ham for 37 years.
As usuall another fantastic and informative video . .keep up the good work
Well done... very informative.
Congratulation, your videos are great!
Before I even clicked it was "because nulls" as my answer and the need for a diversity setup.
The CP antennas having a -3db and -6db point which could seriously hamper long range in certain orientations.
But long range rigs generally dont go full acrobatic and crazy at distance so putting a CP antenna in a vertical orientation would likely work fine and never risk pointing a null back at the RC transmitter. Combine that with a well setup return to home and your orientation for CP antennas is likely still good.
Pretty sure 1/4 wavelength design can be applied to circular polarized antennas because look at the absolutely tiny CP antennas that are showing up from True RC and others.
Would be interesting to see something similar applied to the 1.3ghz and the MHZ realm of products. Basically a VAS style RH CP element that drops down over the linear element of a 900mhz ot 1.3ghz antenna.
Very useful information!
Thanks for sharing, good question, clever answer ^_^ 💪👊
Great information
Thank you
I would have expected placing a linear into a horizontal and circular stationary on the other side of the test rig
Check out the other videos in the series for how linear antenna rotation affects reception ;)
And what model is the RF tester?
IBcrazy aka Alex is my go to for Video. Everything he has advised has worked brilliantly for me. Nice vid! Hope your doing well 👍
You too..