What an adventure-.lot of fun to follow.I kinda saw that one coming.Regardless keep up the great adventures.Working through your problems makes it interesting.
900MHz has a longer wavelength then 2.4GHz, so the antennas for 900MHz are longer then 2.4GHz. Not sure about the why the video gets noisy on the return trip other then maybe the antenna is tilted on the aircraft causing a different polarization? One thing you could try is mounting the antenna horizontally (Sideways) and see if that helps.
Glad to see FPV is in Utah. I would like to join up with you guys one of these days. Just getting started, and have ordered a Ritewing Zii, FPV from BEVRC (432, & 900), and sprung for a Ruby. Thanks for the video, sorry to see you have many problems, I will be going through a similar phase with my new system.
Iron Mountain never looked so good! I too am near PC but have yet to build my first fpv system (reason I stumbled across your video)...hopefully I can get everything figured out and up in the air with my 6 foot telemaster build with twin engines so I can mount all my gear up front like yours. Well done!
great vids! Love the custom planes, too! I'm signed up - I've only seen a few of your vids, but I'm coming back for more! Did you finally get the 900MHz system working?
I've done some rf work. The biggest problem with any band that you pick is that it's very important to characterize each radio, each length of coax, and antenna. A VNA (vector network analyzer) is the best, but most expensive tool for testing coax and antenna. I've tested enough antennas to find that performance claims are a joke. Adding any coax to move the antenna away from the radio, diminishes reception and gain for a few reasons. A field strength meter walked around the plane can be useful.
I think your testing is realy interesting and a lot of your video brakeup I believe was the vertical Polarised antenna on the birds which on any sideways turning or evening adjusting your flight path can lead to a massive drop in signal strength up to -28Db which is enough to almost kill your video,However I agree with your conclusions at the end and Thanks for doing this work as for me It's invaluable info to aquire So a BIG Cheers from me!. Thanks again JC in Auz
One of the guys I fly with does exactly what you are talking about. He has had problems with his DL interfering with his vRX. So he attached his DL on a pole and ran some CAT 5 cable. Distance between him with vRX and his distant DL is like 20 feet or so. Works well now.
Great video, didn't think I would last the near 30 mins but it flew by, very interesting, looking forward to more like this and hope to pick up some more fpv tips before I try it!
Man, I sat through all the 29 mins of this vid (1st time ever!) and I enjoyed every minute of it, especially the long walk to retrieve your FPV plane, lol. I'm also thinking of going FPV but with what you have shown that this isn't going to be easy for me either. I'm using Spektrum 2.4G and thinking of getting the Dragon link and a 900mhz FPV system but with the video you have shown, there are incompatibility issues. Dude, keep up the great job here.
Also, using diversity with both a 900mhz patch as well as a Yagi antenna gave us a 9 mile range. At least that's how far we pushed it before the batteries got low on my friends 9 pound quad.
Have you considered helical ground antennas? I've had amazing luck with my 5.8Ghz Fat Shark Predator V2 system using 3 wind and 5 wind R/H polarized antennas. I attach the antennas directly to the goggles so simply aiming my head towards the vehicle helps with reception. I've been using the stock rubber duck antenna on the receiver, which will change this week when my cloverleaf R/H polarized shows up.
Elevation and azimuth: dipole antennas radiate perpendicularly. So tilt the antenna to make it perpendicular to the airplane. Tilting the antenna may affect polarization, so try to reach a compromise. Banking the aircraft may affect polarization, keep it in mind.
Here are some tips: The higher you get the antenna from the ground, the better, like 5 meters high (16 feet) would be a good start. And the higher you fly, the better. Polarization: it's the most important thing, make sure both antennas are exactly polarized or efficiency will drop drastically. If wrongly polarized, the antennas may never see eachother even at very close distance.
@simio1337 when I turned around there was really nothing in between the antenna and the antenna on the ground, would a camera near the antenna line of sight do anything?
hey this might be a stupid question daniel but is it ok to be using a 2.4g tranmitter and a 2.4g video tx/rx? will they interfere with eachother? -and also just fyi i enjoy your vids of rc AND skiing cuz i ski myself. keep up the videos! thanks jordan
Hey, I have followed your videos for quiet some time, you have come a long way!! I run a Dragon link with a 500mw, 2.4ghz video Tx. I also had an issue with being "to close" to the video receiver... here is what I did: I added a 5.8ghz to the system... the video signal coming out of the 2.4ghz receiver now goes in to a 10mw 5.8ghz Tx. Then I have the 5.8ghz receiver hooked to my video monitor/goggles.
Great and entertaining vid! I always wanted to see a comparison of these 2frequs. Yur sure right - one of the things that 900 can do better is go through walls and stuff. Good you got your plane after this crash. My 2.4ghz vid only went out once really bad and that was cause i let come a hill between me and the plane :-) maybe you should make your range tests on the ground with the car... Video shouldnt get bad if you face towards you... Only in hard turns... Did you leave the radio cone of th
Nice Video, as always. FPV seems so confusing so I doubt I will ever do it. And you do realize how many people are going to call you after they see this, right? LOL
I use a 2.4 repeater with my DL V3 to keep it far from video gear and I use 1.2G lawmate receivers with a saw filter mods and IBC CP antenna's with a 2w vtx I'm only limited on range by the battery size in the plane. it's a 32,000 mah 4s9p 18650 li ion pack running a emax 2826-6 710KV motor with a 13x8.5 master AS prop. range test was out to 126K and a 126K back. it used 27,000 mah of the 32,000 mah pack in my skyhunter. I never lost video or RC control. my GS has a 28,000 mha 4s li ion pack that powers every thing from the DL to the vrx and screens. ROCK ON !
i rec that the reason the video got worce was because the plane flies at a slight pitch which means flying away your antenna is angled down towards you, flying back its angled up away from you, maybe try angling the antenna or putting it on a balance weight to keep the aerial steady
I really like your fpv videos. What type of radio do you use for long range flying? What type of range would you expect for a standard Spektrum radio with an Orange RX?
Looking forward when you are going to test some 5.8Ghz systems, pleace your receiving antennas as high as possible to cut out ground absorpsition en to enhange radiation-pattern (patterns change at differents heights), in generally for all antennas should be placed at least 2 wavelenghts high above the ground. Maybe you get a better radiaton-pattern from your plane if you can place it on the middle of the airplane. Nice experiments, very usefull !!!
@simio1337 I agree, but here in the Netherlands it's the only legal option next to 2,4Ghz to use (FCC is stringent in my country), I am flying my bird on 2.4Ghz. Also it's not allowed to fly with long range systems like the Dragon link here, I have the intention to use a tracking device for the 5.8Ghz in the future, a circulair antenna placed on it will give much better results. At least for the moment I have a nice video quality in my goggles.
The reason your plane gets good signal one way and bad signal when u turn around is due to multi-pathing I.E. something metalic such as a servo/wire/rx/rx antenna between your antenna and the receiver. This causes a huge dB loss. * Mount your antenna lower to the plane because the patch is always looking at the underside of ur plane., use a dipole or a V antenna but avoid rubber duckies.
Antenna length: for 900mhz an antenna length of 1/3 meter (1 foot) will work well, half of that will work, and a quarter of that should work :P Cable length: too short or too long of a cable connecting the antenna may decrease the efficiency. Experiment with different cable lengths.
(only 7:42 into the video so far...) but where is the (stock) antenna for the 900Mhz? i see in the beginning of the video you build a "same" antenna for the 900 Mhz but did you test it? use it on the 2.4Mhz and see if it craps out like it does on the 900 Mhz. Maybe that is where your problem is starting. I know with stereos speakers you need to match impedance for maximum power transfer. perhaps the same applies for antennas. but I'm new to this so Imma going to watch the rest of the vid....
Hey Daniel I am wanting to start getting into fpv what would you recommend for a good starter kit? Obiviously nothing long range just something fun to learn on? Any advice is much appreciated! Thanks
@rctestflight You should invest in a 1.2Ghz Sunsky 400mw ($65~). It has the advantage of low noise in urban environment and it isn't disrupted by wifi like the 2.4Ghz is. I've had the best luck with it, 3 miles away crystal clear video above roads/houses/cars
If you have a Android phone or tablet you can download an app called WiFi Analyzer, which makes it very easy for you to see what channels on 2.4GHz that's lease used where you are. If you have an iPhone or other i-device you have to jailbreak it to download that app. If you have a jailbroken iPhone/iPad/iPod, just go to Cydia and search WiFi Analyzer and you will find it. Just a tip, because you seem to like FPV on 2.4GHz :)
Re: antennas and reception quality... Try a simple circular polarized antenna like the cloverleaf (google it). Building one is a 20 min process. I built mine by cutting a coax + connector I had lying around and soldered the thing right on top there. Pick a diameter that makes it rigid (wind deformation, etc.), but not too heavy. On the RX side, consider a helical antenna for further range.
have you tried 5.8? and use a helical antenna and airblade both lhcp. i have had really good signal using this combo. also i use immersion 600mw vtx. i also use just spektrum dx8 and satellites i have never lost signal i've flown 3 miles out no problems. new laws say we cant fly fpv further than your spotter can see your plane by line of sight. please don't give fpv a bad wrap by breaking rules to much. good job giving info thanks.
check the operating freq of the dragonlink, haramonic come in multiples of 2, if dragonlink is 450mhz, 2nd harmonic is exactly 900mhz, 3rd harmonic s 1800mhz 4th haramic is 3600mhz, thats why your ideal setup is 2.4ghz for video link. its either of both, your radio is desensing the video rx in the ground by the harmonics!
great video man!! But since you have so many equiment, and quite expensive as well(gopro), you should get a rth system.. for example the hornet plus fy31 ap its amazing, its plug and play, and its not that expensive.. You should try the lawmate tx/rx 1,2 ghz 1watt. It works so good!! I´ve seen it from a friend of mine.. I couldnt afford it. I have a chinesse tx/rx 1.2 800mw, with a patch antenna, and a dipolo antena on the plane, I can go way over 10 miles!!
@oli5120 interference is a one in a billion chance. those 2.4ghz systems use spread spektrum, they link with their own receivers and will only talk to those receivers, essentially.
@rctestflight no, unless you have a shitty noisy camera. For example The GoPro was seen to emit noise at around 433Mhz~ same as Dragon Link, this can be avoided by separating the both things. I had instances where I had the same problem you did when my dipole was out by the wing. I lowered to the nose and it fixed it. It doesn't necessarily need to be on the nose but the lower the better. Ur problem is multipathing.
Hey I will be moving sometime in August to Salt Lake City for a job at IM Flash technologies. I understand that you live close to there? Any info on the area would be great? Any good local fields to fly at ect.? Maybe I'll see you out this summer doing one of your videos? -John
Put your antenna's on the bottom of the plane. The signal is being blocked because the antennas are on top. And the when the plane flies out the body of you plane is blocking the signal. Always keep your signals in the line of site. Always put the antenna on bottom of the plane. The higher the frequencies the short distance but less interference. The lower frequencies traveler further. UHF have a hard time going through building and things. Also AM travels father then FM. But the quality of the signal on AM is a little poorer do to interference from Electrical lines in the area. Try using frequencies near 46 mhz to 49 mhz on AM or FM. On real aircraft communications they use VHF AM 114.000 MHZ to 129.000 MHZ AM. Less electrical interference. So use something like VHF AM near 151.625. That will work great for distance on transmit and reception.
@KnightJasonThe 900Mhz in theory is best for range I agree. But 900Mhz is an amateur band so there hasn't been much evolution in the development for sensitive receivers compared to 2.4Ghz a commercial frequency. The longest range ever on FPV has been done by Trappy on 2.4Ghz video technology 86km out. 900Mhz doesn't come even close,it's all because of the receiver. 5.8Ghz has more bandwidth than 2.4Ghz, and 2.4Ghz has more bandwidth than 900Mhz. The more bandwidth the clearer the picture.
I noticed that your screen goes entire lime green when you lose a significant amount of signal? Is that how your receiver works, or are you capturing this through a laptop of some kind (USB capture card?). In the latter case, some capture cards have hidden 'switches' that allow you to keep showing whatever signal is there, even if it's noise.
Hey man, whats the setup on your long duration plane? (the one with the orange wings) like motor and prop specs, what wings were you using.. anything that help :)
Hey Daniel have you ever tried using a SPW antenna for your TX and helical for RX? It gives massive range with way less interference. Are your houses built from stone or wood? Here in Europe our stone plus reinforced steel don't like any signal.
You gotta paint 🎨 the plane with high orange color .. and have a metal plate with address and email 📧 imprinted just in case someone that’s hiking will return it ! 😅
@FivelingoPilotVieuw 5.8Ghz is the worse for range, multipathing and everything. The only advantage is that it's supposed to have better video quality because it sends more Ghz. If you're going with 5.8Ghz look up circular polarization antennas it's supposed to help a lot.
Hi, I'm looking to record with my laptop as well along with my gopro. Question, what kind of connection device did you use to connect and record with your laptop.
@rctestflight Like in 90 degree perpendicular to the feed point (feed point being the connection in the middle of the antenna where the active element and the ground plane meets). If the coax cable runs along one of the elements it will push the s.w.r up = BAD... The dipole should look like this ----|
LDR or dragonlink did not use 2.4ghz nor 5.8ghz its because, lower freq is supperior in range, yes some bands are very clean like 5.8ghz but range would really decrease unless using high gain antenna, ham radioist know this very well, try 2 similar radio, 2m vhf portable radio 144mhz and a uhf radio 430mhz and try range check portable to portable rubber duckie, you see the uhf looses signal earlier then the 144mhz... its bcoz of antenna size, uhf system need stack antenna to get same vhf range!
great vids! Love the custom planes, too! I'm signed up - I've only seen a few of your vids, but I'm coming back for more! Did you finally get the 900MHz system working?- OH- I just saw the demise of the plane on the mountain- no crashproofing equals no plane!! Check out the crashproof planes on the killerplanes channel- it would be worth it to protect your rx and video stuff!
1.2/1.3 Ghz is the best to use for FPV video feed. The penetration is better than 2.4 GHz and not many people use it, so the interference is low, you will get the best signal and range out of it. 5.8 GHz I would say comes in second place. 900 MHz and 2.4 GHz are both no good for FPV. Here is why: 2.4GHz is bad for FPV because it will interfere with your control signals (will drown out your receiver) and there is a lot of interference on that band from Wifi, Bluetooth, etc. 900 MHz is bad because the band is totally jammed from "smart" electric meters causing massive interference.
This is the second great rescue I have seen from yours videos! Great job man! Next time I crash my plane, I call you for rescue.
What an adventure-.lot of fun to follow.I kinda saw that one coming.Regardless keep up the great adventures.Working through your problems makes it interesting.
Uhmm, entertaining video. Enjoyed it.
900MHz has a longer wavelength then 2.4GHz, so the antennas for 900MHz are longer then 2.4GHz. Not sure about the why the video gets noisy on the return trip other then maybe the antenna is tilted on the aircraft causing a different polarization? One thing you could try is mounting the antenna horizontally (Sideways) and see if that helps.
So many casual homestar runner references
Glad to see FPV is in Utah. I would like to join up with you guys one of these days. Just getting started, and have ordered a Ritewing Zii, FPV from BEVRC (432, & 900), and sprung for a Ruby. Thanks for the video, sorry to see you have many problems, I will be going through a similar phase with my new system.
thank you. What a great way of explaining this for me.
They are not magnets, just ferrite rings. You can get them from any FPV store.
One of your best so far. Thanks for all the hard work you put in to these projects. ...
Gr8 stuff dude. Very informative and fun to watch. Thanks for showing..
Very interesting stuff! Useful for my projects too. Keep it up! :)
oh wow hello! didnt expect to see you here 😆
Iron Mountain never looked so good! I too am near PC but have yet to build my first fpv system (reason I stumbled across your video)...hopefully I can get everything figured out and up in the air with my 6 foot telemaster build with twin engines so I can mount all my gear up front like yours. Well done!
great vids! Love the custom planes, too! I'm signed up - I've only seen a few of your vids, but I'm coming back for more! Did you finally get the 900MHz system working?
Who normally films for you? Great video, a lot of info and flight video, thanks!
I've done some rf work. The biggest problem with any band that you pick is that it's very important to characterize each radio, each length of coax, and antenna. A VNA (vector network analyzer) is the best, but most expensive tool for testing coax and antenna. I've tested enough antennas to find that performance claims are a joke. Adding any coax to move the antenna away from the radio, diminishes reception and gain for a few reasons. A field strength meter walked around the plane can be useful.
I think your testing is realy interesting and a lot of your video brakeup I believe was the vertical Polarised antenna on the birds which on any sideways turning or evening adjusting your flight path can lead to a massive drop in signal strength up to -28Db which is enough to almost kill your video,However I agree with your conclusions at the end and Thanks for doing this work as for me It's invaluable info to aquire So a BIG Cheers from me!.
Thanks again
JC in Auz
Man1 That's alot to digest! Probably my favorite of your FPV videos so far!
One of the guys I fly with does exactly what you are talking about. He has had problems with his DL interfering with his vRX. So he attached his DL on a pole and ran some CAT 5 cable. Distance between him with vRX and his distant DL is like 20 feet or so. Works well now.
Great video, didn't think I would last the near 30 mins but it flew by, very interesting, looking forward to more like this and hope to pick up some more fpv tips before I try it!
That was 29 minutes?
Nicely done Daniel...
Man, I sat through all the 29 mins of this vid (1st time ever!) and I enjoyed every minute of it, especially the long walk to retrieve your FPV plane, lol. I'm also thinking of going FPV but with what you have shown that this isn't going to be easy for me either. I'm using Spektrum 2.4G and thinking of getting the Dragon link and a 900mhz FPV system but with the video you have shown, there are incompatibility issues. Dude, keep up the great job here.
Also, using diversity with both a 900mhz patch as well as a Yagi antenna gave us a 9 mile range. At least that's how far we pushed it before the batteries got low on my friends 9 pound quad.
@danny9599 I know that, that antenna was built to fit the wavelength
Have you considered helical ground antennas? I've had amazing luck with my 5.8Ghz Fat Shark Predator V2 system using 3 wind and 5 wind R/H polarized antennas. I attach the antennas directly to the goggles so simply aiming my head towards the vehicle helps with reception. I've been using the stock rubber duck antenna on the receiver, which will change this week when my cloverleaf R/H polarized shows up.
Elevation and azimuth: dipole antennas radiate perpendicularly. So tilt the antenna to make it perpendicular to the airplane. Tilting the antenna may affect polarization, so try to reach a compromise. Banking the aircraft may affect polarization, keep it in mind.
Very interesting video, thanks a lot for the experiment!
Here are some tips: The higher you get the antenna from the ground, the better, like 5 meters high (16 feet) would be a good start. And the higher you fly, the better.
Polarization: it's the most important thing, make sure both antennas are exactly polarized or efficiency will drop drastically. If wrongly polarized, the antennas may never see eachother even at very close distance.
@simio1337 when I turned around there was really nothing in between the antenna and the antenna on the ground, would a camera near the antenna line of sight do anything?
hey this might be a stupid question daniel but is it ok to be using a 2.4g tranmitter and a 2.4g video tx/rx? will they interfere with eachother?
-and also just fyi i enjoy your vids of rc AND skiing cuz i ski myself.
keep up the videos!
thanks
jordan
Awesome!!!!! looks like you have a good setup there. Have you seen any of the HK 2.4 Ghz FPV systems?
your conclusion is perfect,,, nice video
Hilarious video dude. Rare we get to watch others do all the retrieval work. Great job!
Hey, I have followed your videos for quiet some time, you have come a long way!!
I run a Dragon link with a 500mw, 2.4ghz video Tx. I also had an issue with being "to close" to the video receiver... here is what I did: I added a 5.8ghz to the system... the video signal coming out of the 2.4ghz receiver now goes in to a 10mw 5.8ghz Tx. Then I have the 5.8ghz receiver hooked to my video monitor/goggles.
@FivelingoPilotVieuw So the 900 patch shouldn't be 6" up? IBcrazy from rcgroups said that and hes a genus
Great and entertaining vid! I always wanted to see a comparison of these 2frequs. Yur sure right - one of the things that 900 can do better is go through walls and stuff. Good you got your plane after this crash. My 2.4ghz vid only went out once really bad and that was cause i let come a hill between me and the plane :-) maybe you should make your range tests on the ground with the car... Video shouldnt get bad if you face towards you... Only in hard turns... Did you leave the radio cone of th
Haha, I love how you wrote "If found call this number" on the wing of the orange plane :D
Nice Video, as always. FPV seems so confusing so I doubt I will ever do it.
And you do realize how many people are going to call you after they see this, right? LOL
You are one of the rc guys who makes the best reviews on youtube, thanks, keep the video comming
Wow, this might be the best video on FPV. Thanks for the work!
I use a 2.4 repeater with my DL V3 to keep it far from video gear and I use 1.2G lawmate receivers with a saw filter mods and IBC CP antenna's with a 2w vtx I'm only limited on range by the battery size in the plane. it's a 32,000 mah 4s9p 18650 li ion pack running a emax 2826-6 710KV motor with a 13x8.5 master AS prop. range test was out to 126K and a 126K back. it used 27,000 mah of the 32,000 mah pack in my skyhunter. I never lost video or RC control. my GS has a 28,000 mha 4s li ion pack that powers every thing from the DL to the vrx and screens. ROCK ON !
Fun vid, D! Very entertaining! Great info!!
i rec that the reason the video got worce was because the plane flies at a slight pitch which means flying away your antenna is angled down towards you, flying back its angled up away from you, maybe try angling the antenna or putting it on a balance weight to keep the aerial steady
ive gotten 5 miles on 500 mw 2.4 .. 14 dbi and a 24 dbi hyper dish with a duo receiver .. good vid man ,, do you use the go pro for fpv?
Awesome video man, very informative. Wanting to get into FPV when I can afford it, this was excellent for noobs and vets alike I think.
Awesome video and very helpfull information!
Thanks for sharing all your work!
And great pictures too!
Bye!
@RoboTekno thats what this video is about, maybe if you would watch the whole thing you will find your answer
I really like your fpv videos. What type of radio do you use for long range flying? What type of range would you expect for a standard Spektrum radio with an Orange RX?
Looking forward when you are going to test some 5.8Ghz systems, pleace your receiving antennas as high as possible to cut out ground absorpsition en to enhange radiation-pattern (patterns change at differents heights), in generally for all antennas should be placed at least 2 wavelenghts high above the ground.
Maybe you get a better radiaton-pattern from your plane if you can place it on the middle of the airplane.
Nice experiments, very usefull !!!
@bingobongo17 All the way to the bottom of the ground element?
You have such an awesome place to fly
@simio1337 I agree, but here in the Netherlands it's the only legal option next to 2,4Ghz to use (FCC is stringent in my country), I am flying my bird on 2.4Ghz.
Also it's not allowed to fly with long range systems like the Dragon link here,
I have the intention to use a tracking device for the 5.8Ghz in the future, a circulair antenna placed on it will give much better results.
At least for the moment I have a nice video quality in my goggles.
The reason your plane gets good signal one way and bad signal when u turn around is due to multi-pathing I.E. something metalic such as a servo/wire/rx/rx antenna between your antenna and the receiver. This causes a huge dB loss.
* Mount your antenna lower to the plane because the patch is always looking at the underside of ur plane., use a dipole or a V antenna but avoid rubber duckies.
Epic video, nice one!! Great unbiased view, keep up the good work.
Have a look at dipole antenna construction, the coax cable should be perpendicular to the elements - ALWAYS.
great vid, I had the same issue with 900mhz.
Nice video for comparison. I am running 900Mhz in Florida and the signal has not impressed me especially in turns.
Antenna length: for 900mhz an antenna length of 1/3 meter (1 foot) will work well, half of that will work, and a quarter of that should work :P
Cable length: too short or too long of a cable connecting the antenna may decrease the efficiency. Experiment with different cable lengths.
(only 7:42 into the video so far...) but where is the (stock) antenna for the 900Mhz? i see in the beginning of the video you build a "same" antenna for the 900 Mhz but did you test it? use it on the 2.4Mhz and see if it craps out like it does on the 900 Mhz. Maybe that is where your problem is starting. I know with stereos speakers you need to match impedance for maximum power transfer. perhaps the same applies for antennas. but I'm new to this so Imma going to watch the rest of the vid....
Hey Daniel I am wanting to start getting into fpv what would you recommend for a good starter kit? Obiviously nothing long range just something fun to learn on? Any advice is much appreciated! Thanks
@rctestflight
You should invest in a 1.2Ghz Sunsky 400mw ($65~). It has the advantage of low noise in urban environment and it isn't disrupted by wifi like the 2.4Ghz is. I've had the best luck with it, 3 miles away crystal clear video above roads/houses/cars
@rowdyrodcumming 2.4ghz antennas wont work with 900mhz or vice versa
I think you're homemade kit is great.
I love your airplanes!
If you have a Android phone or tablet you can download an app called WiFi Analyzer, which makes it very easy for you to see what channels on 2.4GHz that's lease used where you are. If you have an iPhone or other i-device you have to jailbreak it to download that app. If you have a jailbroken iPhone/iPad/iPod, just go to Cydia and search WiFi Analyzer and you will find it. Just a tip, because you seem to like FPV on 2.4GHz :)
@rctestflight Can u please narrate the FPV Flights ? its awesome when you do commentary :)
@simio1337 Ok I will try that, I have taken a 2.4 rubber ducky antenna apart and all thats inside it is a dipole
Re: antennas and reception quality... Try a simple circular polarized antenna like the cloverleaf (google it). Building one is a 20 min process. I built mine by cutting a coax + connector I had lying around and soldered the thing right on top there. Pick a diameter that makes it rigid (wind deformation, etc.), but not too heavy. On the RX side, consider a helical antenna for further range.
Im like 20 miles from Salt Lake. I know there are a couple flying fields down there but I've never been to any of them.
D
the reason your 900 mhz is not working with dragon link is because dragonlink is 433 mhz the second radio harmonic of 433 is very close to 900 mhz
But he was on 2.4 GHz?
is control was 433 mHz, and his video was 900mHz
have you tried 5.8? and use a helical antenna and airblade both lhcp. i have had really good signal using this combo. also i use immersion 600mw vtx. i also use just spektrum dx8 and satellites i have never lost signal i've flown 3 miles out no problems. new laws say we cant fly fpv further than your spotter can see your plane by line of sight. please don't give fpv a bad wrap by breaking rules to much. good job giving info thanks.
what in the heck did you use to zoom in on the lost plane on the mountain>>! was that a camcorder zooming in that far and tight?
check the operating freq of the dragonlink, haramonic come in multiples of 2, if dragonlink is 450mhz, 2nd harmonic is exactly 900mhz, 3rd harmonic s 1800mhz 4th haramic is 3600mhz, thats why your ideal setup is 2.4ghz for video link. its either of both, your radio is desensing the video rx in the ground by the harmonics!
great video man!! But since you have so many equiment, and quite expensive as well(gopro), you should get a rth system.. for example the hornet plus fy31 ap its amazing, its plug and play, and its not that expensive..
You should try the lawmate tx/rx 1,2 ghz 1watt. It works so good!! I´ve seen it from a friend of mine.. I couldnt afford it. I have a chinesse tx/rx 1.2 800mw, with a patch antenna, and a dipolo antena on the plane, I can go way over 10 miles!!
@oli5120 interference is a one in a billion chance. those 2.4ghz systems use spread spektrum, they link with their own receivers and will only talk to those receivers, essentially.
@rctestflight
no, unless you have a shitty noisy camera. For example The GoPro was seen to emit noise at around 433Mhz~ same as Dragon Link, this can be avoided by separating the both things. I had instances where I had the same problem you did when my dipole was out by the wing. I lowered to the nose and it fixed it. It doesn't necessarily need to be on the nose but the lower the better. Ur problem is multipathing.
Hey I will be moving sometime in August to Salt Lake City for a job at IM Flash technologies. I understand that you live close to there? Any info on the area would be great? Any good local fields to fly at ect.? Maybe I'll see you out this summer doing one of your videos?
-John
Put your antenna's on the bottom of the plane. The signal is being blocked because the antennas are on top. And the when the plane flies out the body of you plane is blocking the signal. Always keep your signals in the line of site. Always put the antenna on bottom of the plane. The higher the frequencies the short distance but less interference. The lower frequencies traveler further. UHF have a hard time going through building and things. Also AM travels father then FM. But the quality of the signal on AM is a little poorer do to interference from Electrical lines in the area. Try using frequencies near 46 mhz to 49 mhz on AM or FM. On real aircraft communications they use VHF AM 114.000 MHZ to 129.000 MHZ AM. Less electrical interference. So use something like VHF AM near 151.625. That will work great for distance on transmit and reception.
watched the whole thing! great! (as always..) I am planning on making an fpv plane, with a long battery life..
what an awesome video! thanks!! :)
@humanmissile any other frequency besides 2.4
@KnightJasonThe
900Mhz in theory is best for range I agree. But 900Mhz is an amateur band so there hasn't been much evolution in the development for sensitive receivers compared to 2.4Ghz a commercial frequency. The longest range ever on FPV has been done by Trappy on 2.4Ghz video technology 86km out. 900Mhz doesn't come even close,it's all because of the receiver. 5.8Ghz has more bandwidth than 2.4Ghz, and 2.4Ghz has more bandwidth than 900Mhz. The more bandwidth the clearer the picture.
20:10 the resom may be the hot balloons radios because everyflying object has to have radio !
Probably balloons have efected
I noticed that your screen goes entire lime green when you lose a significant amount of signal? Is that how your receiver works, or are you capturing this through a laptop of some kind (USB capture card?). In the latter case, some capture cards have hidden 'switches' that allow you to keep showing whatever signal is there, even if it's noise.
Hey man, whats the setup on your long duration plane? (the one with the orange wings) like motor and prop specs, what wings were you using.. anything that help :)
was that a turnigy 9 channel radio that your were using for dragon link?
Hey Daniel have you ever tried using a SPW antenna for your TX and helical for RX? It gives massive range with way less interference. Are your houses built from stone or wood? Here in Europe our stone plus reinforced steel don't like any signal.
Yes I frequently use them now but at the time this video was made they were unheard of in FPV.
rctestflight ahh right now I see it, your video got recommended to me by RUclips, thought it was a new one! So never mind :-)
Do you know if you are legally suppose to have a ham lisence or not to use this stuff?
You gotta paint 🎨 the plane with high orange color .. and have a metal plate with address and email 📧 imprinted just in case someone that’s hiking will return it ! 😅
What motor and propeller did you use for the plane where you could go for an whole hour?!
@FivelingoPilotVieuw
5.8Ghz is the worse for range, multipathing and everything. The only advantage is that it's supposed to have better video quality because it sends more Ghz. If you're going with 5.8Ghz look up circular polarization antennas it's supposed to help a lot.
Well done.
Hi, I'm looking to record with my laptop as well along with my gopro. Question, what kind of connection device did you use to connect and record with your laptop.
@melrobRTF I get the same results with all the antennas I try
@rctestflight Like in 90 degree perpendicular to the feed point (feed point being the connection in the middle of the antenna where the active element and the ground plane meets). If the coax cable runs along one of the elements it will push the s.w.r up = BAD... The dipole should look like this ----|
lol you do the "if found call _" thing too ^_^ i put that on all of my model planes and rockets
Hi wot program u using to record video on you laptop? Cheers.
do you use your 2.4 ghz video transmittier with yaour 2.4 ghz radio ? :O so it work fine? crazyyyy
LDR or dragonlink did not use 2.4ghz nor 5.8ghz its because, lower freq is supperior in range, yes some bands are very clean like 5.8ghz but range would really decrease unless using high gain antenna, ham radioist know this very well, try 2 similar radio, 2m vhf portable radio 144mhz and a uhf radio 430mhz and try range check portable to portable rubber duckie, you see the uhf looses signal earlier then the 144mhz... its bcoz of antenna size, uhf system need stack antenna to get same vhf range!
great vids! Love the custom planes, too! I'm signed up - I've only seen a few of your vids, but I'm coming back for more! Did you finally get the 900MHz system working?- OH- I just saw the demise of the plane on the mountain- no crashproofing equals no plane!! Check out the crashproof planes on the killerplanes channel- it would be worth it to protect your rx and video stuff!
1.2/1.3 Ghz is the best to use for FPV video feed. The penetration is better than 2.4 GHz and not many people use it, so the interference is low, you will get the best signal and range out of it. 5.8 GHz I would say comes in second place.
900 MHz and 2.4 GHz are both no good for FPV. Here is why:
2.4GHz is bad for FPV because it will interfere with your control signals (will drown out your receiver) and there is a lot of interference on that band from Wifi, Bluetooth, etc.
900 MHz is bad because the band is totally jammed from "smart" electric meters causing massive interference.
1.2 fpv cuts out 2.4 control tho