FPV Antenna Lab: Antenna Tuning Test
ฝัง
- เผยแพร่เมื่อ 11 ม.ค. 2019
- Thanks to Greg for the day of hosting me and letting me get my hands on his excellent FPV lab.
Remember that although we are testing for the complete range of channels on most FPV kit these days, not all of these frequencies will be legal where you fly.
Some useful links:
menacerc.co.uk/vswr-return-lo...
menacerc.co.uk/range-calculator
handbook.bmfa.org/
www.ofcom.org.uk/__data/asset...
You can see more R/C related videos on the channel - / painless360
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Huge thank you to all of you that have engaged with this video and especially to those of you who know how antennas, measurement and tuning works for recognising that this video is the first in a series, designed for the pilot who is new for the topic and not trying to cover everything in one 20 min video.
It's easy to pick holes in content that's designed for the beginner when you've done a subject for 20 years, but to do so is forgetting that you didn't acquire that knowledge in half an hour and and the audience it's intended for, thank you to all of you who 'get it'.
Thank you for the excellent ideas and feedback fro future videos in this series. Happy flying!
I think the one part that would be helpful as an addition to why this matters is explaining with a VSWR lookup table showing why 2.0 and 5.0 are useful benchmarks for reflected power - 2.0 being close to 10% reflected power means the output is within the variance of VTX hardware, and even the fairly rubbish 5.0 results in 'only' a -3dB loss (quite similar to a poorly selected coax/connector chain), which for racing is just bad, but for long range or freestyle flying means that a nominally 800mW transmitter is actually barely achieving 250mW of realistic output on a poor combination of channel/cable/connectors/antenna
@@tehllama42 please check the description, that link is already there.
Apart from checking performance of each antennna, it may be good to compare how consistent 2 same antenna from the same model perform. If we find that they are the same, then we have better confidence that your results is applicable to our own of that model. Then we will be able to say, use the aomway at the high band ...
or at least 3 same antenna model.
Another great video Lee. Greg and yourself have given us a great insight into the variances in FPV TX and RX antennas. Very useful
I found this video will be extremely informative. I also found it to be very interesting. Looking forward to a lot more of these videos. Thanks 360 great job!
So I'm new to fpv and trying to wrap my head around getting the best, most reliable upgrades to my fixed wing system. This information was spot on helping me understand the basics of choosing a good antenna for my setup. Thanks guys and keep up the great work!!
This was amazing. I cannot describe how pleased I am to see quantitative measurements on this. Incredibly fascinating and really lends a great explanation for why some antennas are just way better than others.
Enjoying the more diverse videos you are creating recently, good job.
This has to be one of your best videos. Can’t wait for the rest of the series!
Very eye opening for me a great little insight into the tuning given on these antennas great to see the new thrasher now in the wild 😜 that will be one for the shopping list Thankyou Greg and Lee for the generous competition will we see more at all about the perfect orientation for these pagodas let’s say on a wing quad etc
Many thanks today I learnt something 😀👍👍👍
Interesting video, looking forward for the next.
Thanks Greg and Painless360
Thanks guys, that was very informative. Can’t wait to see more antenna testing. That antenna combo pack is a super deal.
Good video Lee. Clear explanation of antenna concepts without over simplifying.
One of the best antenna videos I have seen. Great job
Like these technically informative sessions where a Subject Matter Expert talks about a key component of our FPV flying experience. Great work, Lee.
Lee,
This will be a good series. Again you are giving me practical knowledge. Yes, I would like a set of these quality antennas.
Jim
I have been looking for more information on antennas and this is right up the alley I’ve been looking for...thanks!!!
Fully enjoyed watching that and it has given me a good insight in to how they differ and a better understanding. Keep up the good work I'm looking forward to the next video.
Thank you for all your work you do to help us newer FPV pilots.
You make fpv Painless even when i turn around in a circle. Just getting into this hobby and really like you videos. Thanks.
Thank you very much for the insight on the performance of each antenna! Looking forward to the next videos!
Excellent work guys. Really enjoy this kind of stuff and hope you can include a look at the effect bent elements have on the VSWR readings.
Thanks Lee, another well presented and informative video. I've only just started my journey into FPV and all this information is helping shape my choices. If only all TH-camrs could be as well presented.
Possibly the most useful FPV information video ever. Thank you.
This is a great video, 2 very clever experienced guys in this industry working together to help us out, cant ask for more , thanks guys.
A very interesting video. Many thanks to Greg for making it something we can all clearly understand.
Surprising results. Thanks for the analysis.
Great! Can't wait to see the rest of the series
A really interesting video and surprising to see such differences across the range of antennas tested.
A buddy of mine has a Menace RC patch on his goggles, and I've been meaning to buy the pack to try them out for myself! Very informative video!
I'm in. Thanks for the content as always. Learned even more than expected.
Excellent insight into some of the finer details of 5.8Ghz antennas. Far better than others that I've watched, where they demonstrate a maximum amount of power transmitted for each antenna, then declare the winner based solely on the maximum power transmitted, rather than showing how much of a usable spread within the range exists for each one.
Very illuminating to see how a few of the many, many antennas look on the analyzer, and a very nice explanation of the complex topic. Congratulations on the great job on this followup. You've hit it out of the park.
I do want to note that the one antenna with the very broad, relatively flat response across the spectrum is a bit troubling. A dummy load also has very low VSWR all the way down to DC, but makes for a lousy antenna at every frequency. I had hoped your host might comment. VSWR is but one figure of merit and in some cases possibly misleading.
Thanks again for a great job.
I like the info on how the antenna are tuned, thank you and keep up the good work
Absolutely great video! Seeing the SWR profiles of different FPV antennas gives an interesting insight to how different antennas perform at different frequencies. It would be cool to see some DIY FPV antennas put through the same tests to see how they compare.
This video was very helpful. We were just talking about how to figure out what a antenna is tuned for in my shop last week. This now gives us a idea on how to figure it out. Also wanted to say I have been useing Menance FPV antennas since 2016. They have been great and the only ones I use on my goggles and quads!! The ones I bought at the drone show in 2016 are still working great for me today!!
A great view into antennas. Good to see you not just testing the menace ones as well.
I have been using MenceRC for over a year now and super impressed with the performance.
Have yet to try a menace! This is a very awesome video! Thanks a lot for this Lee! Saturday morning wheaties right here!
Very interesting, looking forward to the rest of the videos
I'm still new to FPV... you have a brilliant channel, thank you!
What a great vid it gives a bit of a insight about choosing the best channel for me, hope 2 see more RF vids. Thx
Thanks guys, I really enjoyed this video and learned a lot from it! Great job, as always!
Thank you for the great Information. This made me reconsider some cheqap antennas i have installed and ordered new ones from menacerc.
Keep up the great work!
Really interesting stuff! Thanks for yet another great vid!
what a fascinating exercise to educate fpv ers about antenna design and relative performance of various brands ,i am a long time 50+years aeromodellor who has been trying to go FPV and this kind of information is invaluable to non technical enthusiasts
Great video can't wait for the thrasher to come out look forward to the rest of the series
Really interesting video am looking forward to the rest of them
So glad that someone is finally attempting to de-mistify the subject of antennas. Thanks Lee.
Great video Lee! It's nice to see our consumer gear tested on professional equipment.
Great video. Made understanding how antenna quality and tune is measured...well...painless. Keep it up!
Fantastic video mate! Wonderful insight and information.
Brilliant investigation! Thanks for this information. Love your channel- keep up the great work. 👍🏼
Thanx for the info from a newer FPV flyer. Keep up the good work.
I know everybody is going to want an antenna analyzer now! Great information keep it up. Thanks
Love these deep-dives!
Awesome test and useful explanation. Thanks for the video and thanks Greg!!!
Great video, interesting how different the performances are from all the different antennas!
Great info, Lee! Love Menace RC!
Great video as usual!! Love to learn all about this stuff and love the insight on these antennas!!! Thank You!!
Very interesting test. Thanks for sharing your results.
Great video. I'm looking forward to seeing more in this series as I like the technical stuff. Shame there weren't any VAS antennas tested, like the MinION, but its interesting to see the varying results.
Another great video, I have learned a bit more about how antennas work. Thanks for making it.
Thanks for the info. As always, excellent content
Excellent video, such a critical part for reliable FPV
I love it that Menace is willing to test their own antennae's live, shows the confidence of the manufacturers.
Interesting vid fella. Pls carry on with the good work.
Thanks - a useful and interesting glimpse into another aspect of the hobby!
Great insight in how these antennas perform
Excellent video. Measuring VSWR is not easy and you need expensive equipment to do it so to see it presented in this way is awesome!
Great video, would really like to see another video testing the consistency of each brand, but i can imagine how difficult that would be.
Outstanding video. Keep them coming.
Good video. Please keep the information flowing.
Being a bit of a Nerd and having always been interested in Electronics I found this video extremely interesting, great video!
Wish that test equipment wasn't so expensive. It sure would make finding your strongest frequency easier. Great video can't wait for the next one. ✌🏻
Extremely useful - now I understand more about antennas! I like this explanation videos...
Great vid, was wondering about FPV antennas and there it was. Bang on, Thanks
Very well done! Thank you! Looking forward to the next one
Very nice comparison. I hadn't really thought about antennas working differently on slightly different frequencies.
Thanks a lot for this nice video and for a chance to see the person responsible behind all antenna I use on my quad.
Big shout out to Greg: Thank you for making Raptor and Stubby. Since I have switched to stubby, I had a lot fewer instances where antennas on my quads would become victims to my poor flying.
And I took that stubby to 2.3km on a 5" quad :) Great yob and keep it up.
@Painless360 I can't thank you enough for making these videos, they have helped me a lot and still will in the future.
It would be interesting to see this on patches as well. This is more informative than most manufacturer specs.
Great video, just the sort of stuff we need more of.
I wish I had one of these meters so I can always fly on the channel my antenna is tuned for. Thanks so much for your videos. Very informative.
Thanks for doing these videos, I have learned a great deal. Keep up the great work!
Dead interesting! Thanks and looking forward to to rest of this series.
This is highly usable information.
Thanks a bunch!
I’m very receptive to this information! Good work!
Liked. I'm lucky enough to own a vswr meter as a radio ham so personally test all my antennas.
Man, I wish I had three things. 1. A buddy that was an expert at antennas. 2. A buddy that would tweak, tune and make anteenas for me! 3. That BA set of premium antennas! Just got into the hobby and I always make an informed purchase. This info will definitely point me in the right direction. THESE ARE THE VIDEOS I LOVE! Bty... I live in the states and will pay for shipping on those bad boys!
I have a pair of Octavia microphones, each came with a print-out of the performance graph. If premium antennas are each tested at the manufacturing stage, perhaps a print out might be nice.
I would totally agree with that being a way for manufacturers to show why paying more means getting more (as opposed to buying a black box of unknowns with questionable Q/A from China.... although the peach rate on some of those is high enough that I can be content)
Fantastic video!!! And very well explained
Great video as always!
thanks for all the info on these..great to see how the antennas perform
Very informative, as usual !
Interesting series you guys started here!
Good stuff! Thanks for the video and data.
Very good info as always! Thank you!
Nice video, great to learn about different aspects to the hobby
Thanks for the in-depth look at 5.8 antennas!
Fantastic video, I had mentioned in a previous post that I didn't trust most of the ads for antennae and this kind of supports my distrust, although as you pointed out this is only one antenna per vendor so the numbers could change if one were to test say 50 antennae per vendor. Hopefully, this will encourage manufacturers to spend a little more time in the design/tuning of what they sell such as the folks at Menace and Fatshark have done. I would like to see as part of every antenna ad, an average trace so we can make an informed decision on what we are buying instead of relying on someone's perceived view of how the antenna is performing. Or possibly include a trace printout with each antenna purchased.
Really looking forward to more, Thanks so much
Very informative! Thank you very much you both. I like these expert videos breaking down complicated stuff to a understandable grade.