Circular Polarized Directional antenna testing and comparison (Round 1 and 2)

[@sUASNews]

So lucky to have lovely soft wheat fields

[@ArxangelRC]

That is true! Would have been quite difficult to locate without the coordinates though... those wheats were tall!

[@CAGreve1231]

Small hint - When running a helical and the video starts to get weak, rotate it 90 degrees axially. The reason for this is that not all TX antennas have the same amount of horizontal polarization as vertical and the helical can take advantage of that (depending on the location of the feedpoint). Thus, by rotating about the long axis of the helical, you can pick up some extra signal with the last 1/4 turn on the helical.

[@ArxangelRC]

Nice tip, thank you! :)

[@makhrozan9416]

Luar biasa, ilmu bermanfaat

[@ArxangelRC]

Thank you! :)

[@sergiourquijo4000]

This channel is awesome. This things take a lot of work.

[@ArxangelRC]

Thanks mate! :)

[@northernfpv9562]

Great topic! I look forward to more on this. I'm always amazed that people are getting that kind of distance on 5.8.

[@ArxangelRC]

Thanks! Keep in mind this was on 25mW... or at least according to the specs... real output might be different! According to a guy who did some measurements on this Vtx, he claims at the frequency I am flying real output is actually around 18mW! Not sure if that is true though...

[@fernandoschuindt1665]

One antenna can perform good today and really bad tomorrow. Many factors can change the transmission quality, especially the ones related to the Sun. From time to time, the Sun will provoke radio blackouts in various frequencies, and that will impact RF signal transmissions.

[@ahatoni]

Hi matie, have you ever done the other test on the CP antennas you mentioned to get some conclusions? Thank you for the great work in your videos!!!

[@ArxangelRC]

Hey, I've been meaning to... but I haven't gotten around to making that test yet! However, I can tell you that the Triple Feed Patch Array antenna is doing a damn good job... and I doubt the more expensive antennas will do much better to justify the price difference!

[@Chris_Paul1]

Great test. My best is 10km on 5.8ghz 600mw with 7 turn circular wireless helical. Could of pushed further but the battery was near 50%. Mind u that I was tracking it with my head as the helical was mounted to some Fatsharks

[@ArxangelRC]

Tracking with your head should work fairly OK for the most part, as long as you have a good idea where the plane is, relative to you! :)

[@CountryMaster16]

so whats the range if you just use a normal recieving 5.8 antenna without tracking on 25mw? in germany you are only allowed 25 so yeah...

[@ArxangelRC]

I would assume 200-300 meters at the most.

[@GiantAntCowboy]

A little late but with my DIY antenna made out of trash i can fly over 3.2km at 25mw. Here’s video showing my range test and diy. Cheers! Easy DIY Long Range 5.8ghz Helical Antenna: kzbin.info/www/bejne/ioSXl4yZiZh3e6c

[@arne1997]

Hey man great video, you’ve earned yourself a sub! Would you still recommend doing the 5db antenna mod on the x9d plus or would it be to risky considering all the problems everyone had while doing it?

[@ArxangelRC]

Hey, thanks mate! To be honest... I might have been the first person around to do the antenna mod a few years ago when I broke my stock Taranis antenna... I never posted anything about it... but I've also never had any issues with that mod! I am not sure how people are messing this up! If you don't want to risk it, just get an R9 system (goo.gl/FeJTgK) and you will have all the range you want, while keeping your Taranis stock! :)

[@arne1997]

ArxangelRC Alright, thanks for the advice!

[@ArxangelRC]

You are welcome! :)

[@zacharymekhi1224]

instablaster

[@LotosAndEarth]

there are some sunny days vith electromagnetic noise and its trouble . in evening noise goes lower .

[@ArxangelRC]

Weird... where does that interference come from?

[@LotosAndEarth]

@@ArxangelRC Solar radiations and other solar activities affect the total electron content of the ionosphere and also affect various radio frequencies used in telecommunications. We studied the effects of electron densities of the ionosphere and how they affect telecommunications. A case study of the year 2000, which was a year of solar maximum, was used to show the variations of electron density of the ionosphere. Hours of maximum disturbance due to increased electron density of the ionosphere were obtained and the ways of measuring the electron density of the ionosphere suggested.

[@ArxangelRC]

@@LotosAndEarth OK... but why would it be so much where you are? Can't say that I've felt much of a difference from one day to the other in terms of long range video and radio range... things have been quite consistent!

[@LotosAndEarth]

@@ArxangelRC exactly , sometimes its for 1-2 days, as usualy from morning to evening when sun goes down. Buy old radio phone , in that days with higer radiation radio phone will work just about 6 meters with noise instead of 50 around the house ,so its my expirience , of course some waves afected more some of tehem less. i dont xnow how its affekting LTE - 3G

[@ArxangelRC]

@@LotosAndEarth Hmmmm... could be! Interesting... can't say I've felt any changes in range though... cloudy days or not... have not done much flying at night!

[@octane81]

Good job man! looking fwd to next video !!

[@ArxangelRC]

Thanks mate! :)

[@55Rumble]

I made a 1.3ghz RHCP patch running on a MFD tracker with a 5.8 repeater to my goggles and it works great. I've not gone past 10km yet but it's perfect to there...

[@ArxangelRC]

Sounds good... you can push it further out then! I also have a repeater on the ground, but it is again on 5.8Ghz, although a different frequency, and very low power! :)

[@austntexan]

Fantastic video, as usual! I wonder if the noise floor is higher in that area later in the day? You were also flying in a different direction, right? Love these puzzles.

[@ArxangelRC]

Well... thing is I tried the IBCrazy antenna again at the end of the flight, and it still performed well, and we have no observed any notable change in noise floor in that area! I did fly in the direction I usually do my long range tests... so it should be pretty OK. Will test again next week and we will see... I have a wrench handy now, so will tighten them down as well as I can!

[@blacksto1]

very good video, hope you figure out what could cause the bad signal, maybe the vtx reduced the power due to overheat? Anyways, consider testing a Crosshair antenna, we are getting very good results (~7km on 600mw without antena tracker)

[@ArxangelRC]

Actually I find it doubtful the Vtx would overheat in flight, the way I have mounted it... running at 25mW... and besides... the IBCrazy antenna was OK beginning and end of flight... sooooo... overheating doesn't make sense. I do not have a 5.8Ghz crosshair... as far as I know those a tricky to make... so finding a good one might be a problem. Will see if a friend is willing to give me his to test next time.

[@cohental2000]

6 dB in gain will double your range there are patch antennas with 40dBi of gain! if u use circular pol, make sure you have rhcp and lhcp on the other side

[@ArxangelRC]

Well 40 dbi would quite directional, very narrow, so you would need a tracker. Would also be quite heavy I would imagine.

[@cohental2000]

@@ArxangelRC If you use GPS track it is very accurate... heavy is less of an issue since it is for the ground station. But maybe I exaggerated 40dB you will need a heavy lift pedestal...

[@ArxangelRC]

Exactly! :)

[@ValleyFPV]

I experienced similar video degradation on some flights and traced it to the pigtail between the vtx and the antenna. Internally damaged.

[@ArxangelRC]

Hmmm... could be! Have not checked that, but found much better antennas since!

[@yuriidemchyna3527]

1 turn helical is maximum for that small reflector. It will give you the best radiation pattern and true 6 dBi of gain, because 6 dBi is 4 times. This means that you will be able to receive only 1/4 of all directions (90 degree sector), compared to an omnidirectional antenna. Don't use a lot of turns with that reflector, because it will not give you the desired gain and will only mess up the radiation pattern: the direction of the main beam can go anywhere and you will not understand what is happening. If you want 12, 8 or 5 turns then you need to have a reflector which has 1-2 meter diameter and a very good conductance. Then you can have 12 dBi, 15 dBi etc. Without a big reflector it is unfeasible to have more gain that 6dBi. Another way is to use a satellite dish with 1-turn helical (insert it in the place of the satelite receiver). But remember that circular polarization changes from left to right and vice versa after the dish.

[@ArxangelRC]

Which antenna are you talking about? Out of all of these only one of the helicals was done by me, and it is the one with the largest reflector! The rest are store bought and supposedly tuned... so they should be working well! The fact is that with the tracker all of these have always performed best dead centre pointed to the plane... so apparently they seem to work OK without a 2 meter diameter reflector!

[@RobertSmith-dq6hy]

Nice work bro !!! Im watching u !! 😎

[@ArxangelRC]

Thanks mate! :)

[@RobertSmith-dq6hy]

william will b pleased with the result !!

[@ArxangelRC]

Haha... we will see... probably from the first test.... not so much with the second... and that 12 turn felt like it was broken... will have to look into that before next test!

[@flightlieutenant6902]

Very good review mate 😊

[@ArxangelRC]

Thanks... should have been better if I had some concrete results!

[@jackdaniels7913]

I run a iBcrazy 5.8ghz LH pepper box straight off my laforge on the fatsharks and have out run my old spektrum dx8 more then once which is why I've switched to a frsky horus x10s w/crossfire and will always stand behind iBcrazy's antennas they simply work well. 🥃cheers🍻

[@ArxangelRC]

Yeah, they are good... but I am not at all surprised you've outrun that DX8... a 200mW Vtx with a simple directional antenna on the ground and a Pagoda can outrun it!

[@jackdaniels7913]

Good point lol I still need to build a proper ground station, can't wait to see your finished ground station to take a few pointers. 🥃cheers🍻

[@ArxangelRC]

It is in the works! :) Some new items are arriving, which will make it easier... and a bit cheaper without sacrificing functionality!

[@pawanv86]

Great video! Is it possible for you to try on the triple feed patch?

[@ArxangelRC]

Actually I did try it on... if you have watched the video you should know! It is not in the antenna shots because it was actually mounted on the tracker at the time! :)

[@pawanv86]

Aaah my bad. I think I wasn't paying attention! 😬😝

[@ArxangelRC]

Happens to all of us! :)

[@GerarddeVries]

Looking forward to hearing the cause of the proble. One other question. I can not find a website for the Miko Antennas. Do you know it?

[@ArxangelRC]

No idea to be honest, I bought mine from Banggood.

[@djvaliro]

nice test. still i think best would be to make more of them using aproximately same factors/conditions and average them in the end for an definitive result. my opinion is most of these anntennas not worth price since its so easy diy and you can leans something interesting along the way. back in the days radioamateurs used diy testing gear for antennas and they outperformed most commercial. nice job. cheers.

[@ArxangelRC]

Well... to make a really good antenna you need some serious gear... other than that its just guesswork to be honest! I've made my own antennas... and only 1 or 2 have actually been good for something because you have no real way of tuning them and testing would require a lot of flights, which is just not practical! The trick is to find somebody who knows what they are doing and have the right gear to tune the antennas! :)

[@TheXenoray]

Wonder, what would perform better: the padoga+triple feed patch 9.4db or the linear antenna and aomway double biquad 13db antenna on receiver.

[@ArxangelRC]

That is still a test that I have to do! Theoretically the linear system should do better for long range out in the open where there are no reflections, etc., but only testing will tell... and it is possible that the results might vary for different locations!

[@skycandyfpv9482]

What RC receiver are you using in this flight? i can tell its 5.8 video but on the RC side of things??

[@ArxangelRC]

Its the FR632: goo.gl/mPonrV I am quite happy with its performance.

[@firetime75]

Where part 2?

[@flat-earther]

same question

[@ArxangelRC]

Well sadly back then I moved on to other stuff and just never found the time to get back to this.

[@themikeymikechannel2947]

What is the best high gain 5.8ghz video antenna? Does anyone know? THKS

[@ArxangelRC]

From my experience the Triple Feed Patch Array has been pretty awesome, and its performance is darn good.

[@CanadianDroneHub]

very nice thanks for sharing

[@ArxangelRC]

You are welcome! :)

[@yokonunz]

Which motor/prop combo do you use on this plane?

[@ArxangelRC]

They are listed in the Parts list here: arxangelrc.blogspot.com/2017/03/x-uav-clouds-it-is-simply-very-good.html

[@jimmynoname4089]

I need a new shop :( Please do a video on yours with a before and after!

[@ArxangelRC]

Hahahahaha... it is a mess in both situations! :P

[@CarpetDunky]

Humidity?

[@ArxangelRC]

Not certain... have not measured it at the time of testing.

[@user-uv4xe3cq2y]

When do you breathe? Are you a robot?

[@ArxangelRC]

Robots don't need to breath... besides... we will be taking over the world very soon! ;)

[@doitchannel67]

😂😂

[@t395delta]

cant go wrong with more dvr footage :-)

[@ArxangelRC]

Yup! :)

[@skyforce1983]

Please send me a link to the esc that has no low voltage cut off

[@ArxangelRC]

Hi, this one does not have low voltage cutoff, as it was meant for copters: goo.gl/sS9Hoh I have used these in a large Y6 copter and they have been absolutely perfect all the way, so will put them in the plane next! :)

[@skyforce1983]

ArxangelRC I'm looking for an esc with no low voltage cutoff does this hobbywing one you linked here have a programmable voltage cutoff I'm running li-ion batteries?

[@ArxangelRC]

No, this one has NO voltage cutoff, so you can use LiIon batteries with it, that is why I will be switching over, because I also fly the Clouds with a LiIon pack! kzbin.info/www/bejne/Z6fVaJavp5J_n5Y

[@Koestel-FPV]

Nice test thanks you !, but I stay in 1.2 ghz 😎

[@ArxangelRC]

Haha, I do like the 5.8Ghz antenna sizes! :)

[@55Rumble]

A 1.2/3 clover is like carrying a small tree but I've not noticed any drag but I do keep knocking it....

[@ArxangelRC]

Exactly! Hahahaha...

[@slavikarg]

Зделай видео по настройкам вектора на крыле.

[@ArxangelRC]

I'm afraid I do not understand! :)