Okay, call me crazy but if his testing antenna is tuned to (3) wavelengths and that is specific to the length of that extension on the end of his helical; then adding a cap with a thickness of (x) will shift his tuned antenna further away from the tested antenna. This would change your results just on that alone wouldn't it?
Very good point, essentially moving the measuring antenna away from the AUT ( Antenna Under Test) will reduce the signal strength measured, however as it is such a small distance (1 - 1.5mm) for this comparison testing we considered it to be negligible compared to the actual signal strength reduction by the addition of the 3d printed material. To confirm, I carried out the test with a 1.5mm air distance change, this gave a reduction under 0.1db.
Appreciate the videos. RF engineering is the black magic of electrical engineering, and most of us can't afford good test gear, so it's great to see these tests.
Excellent work again. One thing to note is that the same rules apply across the spectrum, so 2.4gHz, 900mHz and 433mHz are in the same boat regarding covering. Cheers and thanks for another great video.
These past two videos where great to watch, like all of your videos. But being an Amateur Radio Operator I really appreciate all of the thorough data you have shared on these antennas. I was wondering this and have an antenna analyzer but not for the 5 gig frequency range. Thank you for sharing!
Great Video guys, Keep up this kind of work, it's the stuff that really matters to the "man on the sticks". At this point in the evolution of this hobby, video range/quality are really the limiting factor, and I'd even say are more in need of improvement than battery tech. I'm a radio amateur for 40yrs and as a result have gone to a small portable antenna tower (tripod and collapsible fishing rod) with a Clearview ground station RX. I just purchased HDOs and went for the Rapidfire, so a lot of my time and money has been dedicated to improving my video range and quality. Your research is great as it lets us know what we can do to improve our equipment thru the antenna which, as they teach you in RF101 is the single most important part of a system. PS The weather here in the northern US hasn't allowed any testing, so I can't say how the Rapid Fire compares to the Clearview, I plan on doing some testing in the spring, but have a hunch the Rapid Fire with external antennas on my 20' tower may be quite similar to the Clearview feeding Video to the goggles. My Commanders like the external antennas a lot, but the Clearview has the edge right now. I mention this because this sort of testing seems to be the kind you may be interested in doing videos on. Thanks again!
Great information, Lee. Thank you for bringing light to a difficult topic and explaining the relevance in our hobby. We obsess over the many small details in our hobby, often without any real understanding.Thanks also to Greg for sharing his knowledge and illustrating the points with his scope. I would be very pleased to include his products in my next build.
Another awesome video. I learned so much watching your videos thank you. Fingers crossed on the contest. I have been researching this pack of antennas and they look like they are the best out there
Very informative video. You’ve probably helped more people with this video than most other FPV related tutorials out there. I’ve been flying FPV for years and I consider myself a expert pilot. Even experts make mistakes, lol. I’ve been using TPU canopy’s and mounts for stubby antennas that were completely recessed and experiencing problems because of it. Thanks to you, I know why
Thanks to Greg and yourself for taking the time to do this testing , and the others, and presenting in a way that can be understood. I know that testing could be unlimited but, I fly a lot of 1.3 (1.258) also with DIY dipole and inverted T style antennas with the lengths based on calculations from the web. Performance has seem to be good but always wondered about the difference in the insulation type around the wire. Would be interesting to see some comparisons in this frequency range. Thanks, Jerry
Very awesome work! So interesting to see the effects of external Materials on our vtx transmissions! Keep it up! Also I’m crossing my fingers for winning the antenna pack!
Thanks for the informative video! For those that don't want to plug in the numbers themselves, according to the calculator on the Menace site, a loss of 2db on a 25mw transmitter means your range reducing from 340m to 270m. FWIW, I use TPU shrouds on my antennas and have never had an issue at a race. Given my quad is generally within 150m at all times when flying a track, the results make sense as I'm still well within 270 metres. However, on a particularly large track, it may become and issue. Something I'll certainly keep in mind.
It would have been great to have the 2db drop as a percentage loss in range as that would be a lot easier for us to use. Great, informative content as always. Thanks.
It depends on so many other things. Check out someone else in the comments whose handily already done some of the calculations or use the link in the description to figure out for the or setup.
In the future, will you be shedding any light on whether or not zip ties and heat shrink cause any degradation to receiver antennas on the quadcopter? Awesome video guys, very interesting.
Great info! Just got my first set of goggles, VRD2 pro, and plan on getting this combo. Would love to win though..lol..good luck everyone. Thanks for this vid, as a Ham Operator it's something I always enjoy, real important stuff explained well. ☮️ Wheelchair John in Idaho 😎
Okay, call me crazy but if his testing antenna is tuned to (3) wavelengths and that is specific to the length of that extension on the end of his helical; then adding a cap with a thickness of (x) will shift his tuned antenna further away from the tested antenna. This would change your results just on that alone wouldn't it?
Very good point, essentially moving the measuring antenna away from the AUT ( Antenna Under Test) will reduce the signal strength measured, however as it is such a small distance (1 - 1.5mm) for this comparison testing we considered it to be negligible compared to the actual signal strength reduction by the addition of the 3d printed material.
To confirm, I carried out the test with a 1.5mm air distance change, this gave a reduction under 0.1db.
Appreciate the videos. RF engineering is the black magic of electrical engineering, and most of us can't afford good test gear, so it's great to see these tests.
I always learn something new from watching your videos. Thanks for the post.
Adds a fasinating dimension to this hobby
Excellent video, antenna range is always an issue, this video gave me more knowledge . Thanks
Excellent work again. One thing to note is that the same rules apply across the spectrum, so 2.4gHz, 900mHz and 433mHz are in the same boat regarding covering.
Cheers and thanks for another great video.
Love MenaceRC gear and proud to see a UK biz that makes premium quaility quadcopter products.
Great explanation about antenna design and the considerations that go into them.
This is a great piece of information, this can only be positive info to help us all to get great performance, thanks guys.
Big fan of the technical content.
Liking your technical videos on FPV!
Always love your technical series. Thanks Lee.
Thanks for this excellent video. It really helps explain the affects covers have on our antennas.
Thanks for all the great information. Keep the videos coming, I have enjoyed them for years now.
Thanks Lee and Greg
Always the best information and very well organized.
These past two videos where great to watch, like all of your videos. But being an Amateur Radio Operator I really appreciate all of the thorough data you have shared on these antennas. I was wondering this and have an antenna analyzer but not for the 5 gig frequency range. Thank you for sharing!
Great info! Those Menace antennas are great as well for anyone who wants to know. Thanks!!
Thanks again for another useful and informative video, I'll be keeping this in mind going forward
Another excellent antenna video. Interesting results for the antenna covers.
wow! what a great give away. thank you for looking in to this
Thank you for this series, tpu covers that I printed for one of my quads might be the answer to the problem with its fpv range!
Very interesting. I like that you went to an expert to do the tests. Happy flying.
My Aomway antennas just arriverd!This and the previous video was spot on! Thank you for your good work !!!!!!!!
Great Video guys, Keep up this kind of work, it's the stuff that really matters to the "man on the sticks". At this point in the evolution of this hobby, video range/quality are really the limiting factor, and I'd even say are more in need of improvement than battery tech. I'm a radio amateur for 40yrs and as a result have gone to a small portable antenna tower (tripod and collapsible fishing rod) with a Clearview ground station RX. I just purchased HDOs and went for the Rapidfire, so a lot of my time and money has been dedicated to improving my video range and quality.
Your research is great as it lets us know what we can do to improve our equipment thru the antenna which, as they teach you in RF101 is the single most important part of a system.
PS The weather here in the northern US hasn't allowed any testing, so I can't say how the Rapid Fire compares to the Clearview, I plan on doing some testing in the spring, but have a hunch the Rapid Fire with external antennas on my 20' tower may be quite similar to the Clearview feeding Video to the goggles. My Commanders like the external antennas a lot, but the Clearview has the edge right now. I mention this because this sort of testing seems to be the kind you may be interested in doing videos on.
Thanks again!
Nice video! I had no idea antennas worked in that way! Very informative!
Great information, Lee. Thank you for bringing light to a difficult topic and explaining the relevance in our hobby. We obsess over the many small details in our hobby, often without any real understanding.Thanks also to Greg for sharing his knowledge and illustrating the points with his scope. I would be very pleased to include his products in my next build.
A pack would be great- keep up the good work, Ken
So happy I got the stubby SMA now.
Another awesome video. I learned so much watching your videos thank you. Fingers crossed on the contest. I have been researching this pack of antennas and they look like they are the best out there
Thanks for the follow-up. Very interesting info!
Very informative video. You’ve probably helped more people with this video than most other FPV related tutorials out there. I’ve been flying FPV for years and I consider myself a expert pilot. Even experts make mistakes, lol. I’ve been using TPU canopy’s and mounts for stubby antennas that were completely recessed and experiencing problems because of it. Thanks to you, I know why
That obliterates the hypothesis I had that all plastics would be invisible to the radio frequencies we use. Thanks, Lee!
Changing tuning is different than absorption
@@giantfpv9862 Exactly, if plastic was completely invisible there would be no change.
Thank you so much for testing this for us! I was the one that requested the tests with various materials, and it looks like there is a difference!
This information is very information. You always provide information that is useful.
Great! Good to see a quantitative analysis of the effects of these covers. Keep up the good work.
Thanks to Greg and yourself for taking the time to do this testing , and the others, and presenting in a way that can be understood. I know that testing could be unlimited but, I fly a lot of 1.3 (1.258) also with DIY dipole and inverted T style antennas with the lengths based on calculations from the web. Performance has seem to be good but always wondered about the difference in the insulation type around the wire. Would be interesting to see some comparisons in this frequency range. Thanks, Jerry
Very awesome work! So interesting to see the effects of external Materials on our vtx transmissions! Keep it up! Also I’m crossing my fingers for winning the antenna pack!
Fantastic video!!!!
I have a request. Would it be possible to do a video on how to tune an fpv antenna?
Good information and introduction to a very interesting topic!
thanks for all the help im new to fpv.
Thanks for your hard work on this, and helping us understand this subject. Cheers!
Learning something on every video!
Another good video about fpv range
Great videos. Very informative. Thanks for sharing this information!
Great timing as I have just fitted covers on my aomway's :) Great bit of investigation thanks Guys.
Nicely done. Thanks. Proves my thoughts.
Fantastic video Lee
Great info! Love learning more about the technical details.
Great stuff! I'm in the process of choosing antennas for a long range build and the series is very helpful.
Very interesting Video. I Like to see more about it! Keep going!
Excellent work again guys. The information is both clear and informative. Thanks again.
I really enjoyed this short series it was very informative. Thank you for your time and effort. ✌🏻
Thanks Lee for the very informative content!
Nice information great to be able to see this in action. I love menace antennas don't use anything else. Top job
Thanks for the informative video! For those that don't want to plug in the numbers themselves, according to the calculator on the Menace site, a loss of 2db on a 25mw transmitter means your range reducing from 340m to 270m. FWIW, I use TPU shrouds on my antennas and have never had an issue at a race. Given my quad is generally within 150m at all times when flying a track, the results make sense as I'm still well within 270 metres. However, on a particularly large track, it may become and issue. Something I'll certainly keep in mind.
And
Now i can say ive learned something today.
Thanks for the video😊 I so want a measuring tool like that..
Thanks for the interesting information. Great video.
Great video ... again Lee.
Great content lee very in-depth
Great video. Highly informative!
It would have been great to have the 2db drop as a percentage loss in range as that would be a lot easier for us to use. Great, informative content as always. Thanks.
It depends on so many other things. Check out someone else in the comments whose handily already done some of the calculations or use the link in the description to figure out for the or setup.
As always great information. Thanks
Sweet.. Glad i stayed through.. Didnt expect a giveaway
Pretty impressive content, Lee! Impressive and informative! Thanks a lot! 😊
great vid. I never thought tpu would effect antennas in that way. what about receivers and installing them with zip ties and heatshrink tubes?
As always very informative
#185: Very interesting info, thanks.
Great video - thanks Lee
Great content! Very insightful!! Thanks!
Thanks for this video, informative. I have the Aomway and have always wondered if the plastic cover affected it or not, good to know.
Always very informative, keep up the good work.
im glad to see more :)
Amazing info and thanks for sharing it with us all. Regards.
Nice, thanks, I'm suprised ibcrazy didn't do this test on vid already, I'd LOVE to see other antennas tested on that machine, like the lollipop 2
In the future, will you be shedding any light on whether or not zip ties and heat shrink cause any degradation to receiver antennas on the quadcopter? Awesome video guys, very interesting.
Indeed, check my other replies. Stay tuned and make sure you have the bell notification icon ticked. Happy flying!
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.
As you are one of the people who asked about this - here is a preview of
an upcoming video :D th-cam.com/video/O4_VuZz3mVI/w-d-xo.html
Another Excellent video!
Great video and I love my Menace antennas....:)
Great stuff! I'm always in to learn more. Thanks!
Again great video. I would like such a network analyser for myself.
Helpful info, as usual. Thanks!
My head hurts. Thanks for the insight
Sorry for the headache, hope the detail comes in handy at some point! :D
Very useful information.
Thanks Lee.
I often cover my receiver antennas with heat shrink. Was the affects of this tested at all.
Yes this is my question as well- I have taken it off some of my cxfr and r9 rxs and had better signal
Interesting facts about antennas, thx.
Great info! Just got my first set of goggles, VRD2 pro, and plan on getting this combo. Would love to win though..lol..good luck everyone. Thanks for this vid, as a Ham Operator it's something I always enjoy, real important stuff explained well. ☮️ Wheelchair John in Idaho 😎
Only thing, on all my swr testing I learned to be in a wide open area as metal objects, etc. effect results.
Thanks Lee
Great video as always
Awesome series. Thank you for explaining it to the average joe ;D
Thanks for another informative video can't wait for the next one
Good job totally cool sign me up for the drawing thanks again for the follow up.
Very informative video guys
brilliant video, very interesting!
Always good content. Kept up!
Thank you for your work
Very interesting, great video.
Very good information - have saved it to my 'Watch Later' file!
Great content! Very informative. Thankful guys.
It may not make a difference but with the covers on the receiving antenna was a bit further away. Just an issue with testing…