Outstanding...thank you sir!! Today i got told by every expert under the sun "Nar, nothing can be done..new receivers the only option" came home and tried splicing, some soldering, 10% improvement at best. Its late, couldn't let it be, jump on RUclips and watched this video. 15 mins later and im walking across front lawn in my boxers, fimgers crossed.. The Rustler's 2.4ghz reciever and it's new custom "minimalist look" 😆 460mm aerial, has full range again. Again, thank you Sir, you little ripper
Funny, I've heard people say that it's only the last 3cm on a 2.4 rx antenna that mattered but nobody ever bothered to say WHY. Thanks for clearing that up!
Wow, this happened to me yesterday, and I didn't know if it was an Issue, if it need to be fixed or even how to go about fixing it, as always Bruce, you saved the day. Not only showed me how but offered two solutions! Thanks.
Thanks Bruce. This fixed my range check on Orange R620 from 20 paces to 40+ paces! Still amazed to find out that it is only the exposed part that makes up the aerial!
Bruce, your timing was perfect...my poor little mini quad antenna. I ordered replacement antennas for the FrSky D4R-II and am looking forward to your "replace video" Thanks for everything.
Joerg Paysen I contacted the good people at Aloft Hobbies and they recommended this... " they snap in and have a little rubber like epoxy on them as well. You can just lightly remove the "glue" and pop them off and snap the new ones on" I will wait for Bruce's video before I replace mine.
This vid reminded me... A lot of us use ImmersionRC video transmitters and like myself many people have snapped the SMA connector on them as they're very fragile. The pads come off the PCB and there's no way back! Lesson learnt I guess... Protect the vtx and use an antenna extension to mount the antenna! It would be great to see a tutorial on how to re-use these broken transmitters as it's happened to literally almost everyone I've met flying with them! I will quite happily send you one in return for a good video ;-)
Bruce. It is more than time for you to allow us to pay for your videos. Not a donate button. A pay/year subscription. I watche everyone of your videos for a year now. I'm amazed by how much I know thanks to you. How much you saved me money not buying crap or knowing my way around difficulties I encountered in this hobby. Please patreon your channel or take a look at Vessel or something else you like. You deserve something for the knowledge you're spreading.
Thank you so much!!! I forgot about this method and ended up buying a new receiver tonight before I finished this video. I wish I had! Thankfully, I think they'll give me a refund. Thanks again for this vid!!! Definitely saved!
Thanks for this video. Question: I bought some new receiver wires and they came with 34 mm exposed, so will I improve the signal strength at 2.4GHz if I snip the exposed part of the inner wire down to 31mm? Cheers!
***** The UFL connectors are somewhat fragile and it is *very* easy to damage them. I'll show the strategies to ensure that you don't create any damage during the removal or replacement operations.
You saved my ass tonight. Thank you. I have attended many of your videos and have enjoyed your acerbic approach to teaching even when it goes right over my head. But I'm learning.
does the telemetry really go thru only one of the antenna's? I figured it was encoded in one 2.4ghz signal, with it being a diversity setup and a duplexer. You should do a mini video detailing the technology involved. Cheers
Hi Bruce, thank you very much for your tie and expertise!!! One question: you showed the calculation for the aerial length. Does it always have to be a "quarter" antenna or can I also do a "half" antenna for example? Sp instead of 31 mm it would be 62 mm long?
Hi Bruce. As a licensed radio amateur, and having experimented with various antennas for various frequencies over the years, I also found that the best length for the feeder of a 1/4 wave antenna was ANY uneven multiple (except 1), of the quarter wavelength. i.e if 1/4 wavelength = 31mm, then any uneven multiple length of coax that is a multiple of 31mm will be ok. So, NO to 31, YES to: 93 [ which is 31 x 3], 155 [ which is 31 x 5], 217 [ which is 31 x 7] etc. As you also mentioned about velocity factors this feeder length is not absolutely critical, but it's just as easy to get the correct feeder length as not, so why not try? Keep up the great videos. Regards Mark in the UK
Thank you so much for this Video! Just broke my Antenna on the miniquad like this some weeks ago. Soldered it including new insulation and screen... Was quite difficult. If i only knew your method before.
Thanks for the great vid. Very useful. Two things: 1) I've finished my 1st miniquad build according to your videos plus a few other resources. The damn thing flies really well! I'm going to post a complete list of what I purchased, where I got everything, and what the total cost was. I'm a complete beginner so it will include everything I bought. I'm really happy with it. But I'd not really call it cheap! 2) On the topic of miniquads I'm hoping you will do a review of: FPV Freerider RC Quadcopter Racing Simulator. Uber cheap and pretty interesting as a simulation for learning to fly racing miniquads. I'm having some issues getting my Turnigy 9x to work correctly with it. Having problems mapping my channels 1 & 2, but I'll work it out eventually. I'd love to hear your impressions of this dirt-cheap piece of software. Thanks again for another great video.
Larry Grimes Is there an advantage to adding a wire out to 1/2 wavelength since you already have the cable tie running up rather than cutting back to 1/4? Adding a bit is pretty simple.
Larry Grimes This quad (MXP230) has room between the frame and the power distribution board into which the ESCs will fit so I put them their to minimize the risk of them getting damaged when flying through the dense trees around here.
Larry Grimes A 1/4-wave antenna has a different impedance to a 1/2 wave antenna so it would not be a good match to the antenna or the receiver. The result might even be a reduction in range.
Andrew Waters It's a sleeve that provides a counterpoise for the wire of the antenna itself (the bit we exposed). It does improve the radiation pattern of the antenna and can increase range -- but most RC gear has range which is several times the distance at which you can actually see a model so most manufacturers opt to save weight and bulk by not using it.
+RCTV-UK Let me see if I'm right: The length of the antenna WITH the shield doesn't matter. The important length is this slice of antenna WITHOUT the shield protector: 123mm? (or a 1/2: (61,5mm) or a 1/4: (30,7mm)? I'm right? Today I cut from the root my antenna from RadioLink R9D 2.4Ghz 9-Ch S.Bus Receiver and now I need to fix it.
I have had one of mine cut off at the mount on my walkera f210 for a few months now. I haven't noticed any range problems but i only fly over 2.5 acres. What other problems could potentially arise if i don't fix it? i will get around to it i just have another project i want flying before i pull her all down. Thanks.
Cheers for video, how come frsky d4r-II is 15mm? Is that because there are two totaling to 30mm? Looking forward to the full replacement as one of mine is damaged half way up the antenna.
Hey, watched your video today and followed a long as I performed the process myself. Great video great info and great results!!! Thank you so much for this and getting my bird back up there!! 🤘😁👍
Very nice and informative video. Does it mean that the "receiving" part of the antenna is only the exposed part of it ? Can I run the insulated part under the cage of the quad and only care to place correctly the exposed part of it ?
Hi Bruce. Does the transmitting potion of the wire need to be kept straight? Also, some of the Sanwa 2.4GHZ car receivers dont have any exposed section and are quite long. I was told its probably a full wave or 1/2 wave antenna, so would that whole antenna need to be kept straight ? Cheers
Hi there! Accidentally I cut one of my 6 channel flysky rx about 2 cm in length while I open my courier packet and it's really make me feel bad. Luckily while searching the RUclips another rc youtuber pointed me to your video and what a relief, I don't need to purchase any replacement antenna at the moment. I just follow your very useful mod and hope for the best. Again Tqvm keep up the good works. P.S I'm flying a 3d foamie F3P plane.
Bruce I need to replace the single short wire antenna on an old d4fr frsky receiver as it has broken off, what grade/type of wire can I replace it with? I know that it must be 31mm long but not the type of wire. Can I use normal silicone wire or normal copper wire? Many thanks rct
Hey Bruce! In our local flying group we discussed the following question: this is a dipole antenna and you´re manufacturing a 1/2 wavelength antenna here. 1/4 of the wavelength is without isolation and mesh. Am I right if I say that another 31mm (1/4 wavelength) of isolated cable also contribute to the dipole? Thus, 62mm have to stick out of the quad?
Thanks Bruce - I have broken antenna, but the piece that came off has the wire disappear into a brass cylinder about 3mm in diameter. Whats the procedure for that?
Thanks for sharing mate. You're a wealth of knowledge, really helpful for a newb like me and I really appreciate the effort you go to, to do these vids.
+Brian “Mozzzzi” Bloomer Just one quick question, you mention that replacing the antenna on the D4R is tricky. Did you end up doin a Vid on that? Look just like I should unclip and clip the new antenna onto the terminal in the D4R. Is it that easy? Thanks.
+Brian “Mozzzzi” Bloomer nk to a cable tie, is it OK for the heatshrink to cover the clear wire 31mm or should the heatshrink not cover the clear wire?
Bruce thanks for videos. If understand correctly. I should my mix all the whip antennas that come Tx /rx / and what not. Use 2.4 on 2.4 not 5.8. Etc... ??
Ha Bruce , I pulled apart a dipole from a VTx to use the cable and the tip measured 10.2mm. Another was 31mm but both labeled 5.8G. Is there any explanation?
Yeah happened to have a spare cable with connector from when i pulled apart an old laptop or router or something. Basically you just need coax cable by the sounds and you can resolder them. At least hope thats right
Love your videos! Finished my mini quad using your tutorial and am finally good enough to fly with the goggles on. My first big crash smashed one of my clover leafs on the antenna. I was able to bend it back in place and it seems to be pretty good, but sometimes I still lose signal. Is there a good way to repair one of these or am I looking at buying a new one? Also, is it normal to get less range on fpv in low light? I seem to have about half the range in the evening than I do during the day.
Another great video Bruce , Im flying with assan 2.4ghz and can I use any old wire I havent found any shielding on the unbroken antenna silly question i just want to be on the safe side cheers
I use 3 XM+ rx, 2 of them are old version with 15cm long antennas(overall length) and exposed part of 33mm(roughly). The new one's antennas are 10cm long with 21mm exposed part. I got answer from Frsky that the 21mm exposed part on 10cm works the same as 33mm on 15cm. Why so? Should I stripped it into 31mm.?
Hello Bruce, after watching this video I'm wondering why the short range RX have short antenna(s) in form of 'conventional' litz wire(s) and the full range RX have long antenna(s) in form of coaxial cable(s) at least on the RX I'm using then. I read your post here where you've written that in modelling (small antennas) the total length of the antenna(s) doesn't matter. So what's the difference in antennas and in those two kinds of RX?
Another great video Bruce! I am almost done ordering parts for my Mini quad build and also and getting a little thing from HK that has two tubes for the antennas and are a 45 degree angle to keep them up and the right way but if this every happens will try for sure! Thanks again :D
Just the video I needed. Thank you Bruce how about a video on ESC's? The DYS SN20A is being compared to the KISS 18 amp esc. I would love to see how they stack up!
My tip is to cut the shielding a few mm long and then either measure or line up the end of a good antenna and trim to fit as the last step. It's a little cleaner and ensures you don't have to cut the shielding twice.
Does the length of the antennas matter as far as the range is concerned? Because I ordered a SwellPro Swift 2 and received it today and both antennas are approx. 2cm long. Does that affect the range?
To make it complicated: don't you have to consider the velocity factor of the antenna lead, which will make the optimal antenna length a little bit (5-10%) shorter than a quarter wavelength?
superdau The velocity factor applies to the coax itself but not so much to the radiator portion. Also remember we're dealing with a frequency spread of 80MHz here on the 2.4GHz band so it's never going to be an exact 1/4 wavelength of all the frequencies that get transmitted.
Would it be a problem if you shorten the opposite end of the cable to solder onto a board? I ended up shortening the 2.4ghz cable from my flysky GT3C before soldering back onto the board. To be clear, the entire external antenna is untouched, just the soldered end was shortened by a good inch.
Hi bruce i have a fs-a8s reciver and i saw a video someone had change to a quater wave diapoll instead of the original quater wave monopoll antena. How mutch improvement if any you would get considering the weight you would gain?
Hey Bruce, my Turney transmitter had a brass piece on the end of the wire. I think it was soldered to the wire, but I don't know on the inner or outer braid. It was cut between that piece and the TX case, can I just splice the coax back together?
Hi Bruce Just wondering if we can extend the Spektrum satellite aerials/antennas to clear carbon and batteries etc? I know Spektrum have a carbon satellite but it only has one long aerial/antenna not the usual 2 of the standard satellites! cheers
RCModelReviews - I have a Futaba R2008SB 8-Channel 2.4GHz S-FHSS receiver, with dual antenna, would it still be okay if the lenght of each antenna is different but the exposed cable are at 31.25mm? Many Thanks from Country - Belize.
great video. thanks question, my sr210 receiver has no coaxial cover. just a 8.5 cm with a single solder point in the receiver. i need a longer antenna and would like to add one but with no place to solder the ground wire. can the battery ground be used for that? since i got the receiver they have upgraded to a longer antenna. i would like to be able to fix the one i have. any ideas? any help would be appreciated. thank you
Excellent video Bruce, can you do one on adding this type of antenna to a receiver that has one (or more) short antennas coming off it's circuit board? I have some Orange R615Xs that would be great mini quad receivers if the antennas would clear the frame.
Great! Still waiting for your hitec radio review. Not much on the web, only some griping about bricked ones. Is the maxima really the bee's knees to say FASST / s-fhss? Is there enough in that radio for a heli flyer to want to convert his flybar heli's over?
pataat oorlog The Hitec is certainly one of the lowest-latency systems around (which is a complete about-face from the days of the original Aurora 9 which was probably the highest-latency radio on the market) but in terms of resistance to interference and range, most of the modern 2.4GHz frequency-hobby systems are now pretty much equal.
Interested to see what you think. Price point seems right. I've heard people allege that support when there is a problem is poor this neck of the woods though. And OMP/Modelflight do not carry them :/ Still
QUESTION, please: about rx antennas; most tinywoops come with a AIO board. And the rx antenna is just a 26awg cable, with no ground or anything else... How come??? How does it work?? And about Lengh? I think Albert Kim tried to put a regular antenna in his mobula6 and put the ground somewhere and the thing got lot lot worse in range ...
I read a lot of people here asking about shortening their antennas... Am I correct to assume that I can replace an original antenna for a longer one if I maintain the lengh of the exposed end? I bought an IRangeX RM601 that has 3.5cm antennas - it only has the exposed part with no ground on the rx itself. Is there a way of sticking a longer antenna on it?
Rcmodelreviews hiya Bruce iv broken my flysky IA6 receiver antenna,s will it be a good idea to use RG-316 coaxial wire or must it be replaced with the RG-178 wire Bruce
Hello. I broke my antennae in half. Can I just solder the inner wires together from both pieces or do I have to start from the end that I have left? Thanks. The end that broke has a thicker end than the antennae wire and so I am leaning towards keeping it. (it's the stock antennae that came with ia6b). Thanks
On your next video could you explain the large difference in receiver lengths - eg Flysky is 26mm. Also good to show a BODA aerial particularly for the lower range systems and toy radios to increase range by using that cut off coax shielding.
Rob Gale Not really - there is a big difference between 33mm FrSky and 26mm FlySky. That is not down to manufacturing tolerances, it is a design decision. Perhaps to do with tuning sensitivity and interference - just like the old GWS FM park receivers having non 1/4 wavelength very short aerials.
If its only the exposed part of the antenna that matters, can i actually trim the length of both my rx antennas down and do this modification and yet not reducing the signal quality of my receiver?
How many times can you do that before the whole antenna becomes too short? I realise the end portion`s length is important BUT surly the whole length must be important also?
bmhi quick question, i just bought a cheap basic remote the dsx, i crashed my plane today and was pretty bumbed out cuz it was my first flight with this new remote control, so i was thinking i bought a defective unit right after my other one had just broke and now im out a airplane too which was even more of a bumber but as i was thinking about what could have went wrong i suddenly remember when the guy at the hobby shop put the bind wire to my reciever he pulled my reciever out which means the attena wire was no longer going to the outside of the plane, and when i went to fly it it was fine untill i got about 200 ft than i lost control of it and it nose dived to the ground and was confetti afterwords, do you think it could have been because of the antenna wire? this almost got me back out of this hobby because i always get defective electronics but in this case im startimg to wonder if it all happend because of the antena wire not being exposed. i did a short range check but was lazy and only walked 75 ft away maybe.
I use an old nailcutter instead of the side cutters for small wires. Much more precise since it's got a thin profile and sharp all the way to the edges. I would have used that to cut away the outer braid.
can i connect 2 antennas cables together? ....i need 50cm antenna cable...i want to connect the old antenna with 50cm new cable....can i do that? nice video !
Outstanding...thank you sir!!
Today i got told by every expert under the sun "Nar, nothing can be done..new receivers the only option" came home and tried splicing, some soldering, 10% improvement at best.
Its late, couldn't let it be, jump on RUclips and watched this video.
15 mins later and im walking across front lawn in my boxers, fimgers crossed..
The Rustler's 2.4ghz reciever and it's new custom "minimalist look" 😆 460mm aerial, has full range again.
Again, thank you Sir, you little ripper
Damn, this is still useful 6 years later, just saved my life! Great video!
Funny, I've heard people say that it's only the last 3cm on a 2.4 rx antenna that mattered but nobody ever bothered to say WHY. Thanks for clearing that up!
I literally just broke an antenna an hour before you uploaded this! Thanks!
Thank you so much! 4.5 years later and it saved me from buying a new receiver!
Wow, this happened to me yesterday, and I didn't know if it was an Issue, if it need to be fixed or even how to go about fixing it, as always Bruce, you saved the day. Not only showed me how but offered two solutions! Thanks.
Thanks Bruce. This fixed my range check on Orange R620 from 20 paces to 40+ paces! Still amazed to find out that it is only the exposed part that makes up the aerial!
I've done exactly this twice, once to a D4R-II and a Futaba RX for a friend. It's great you getting it out there. Many Thanks.
I broke the antenna couple of weeks ago so this video is a real lifesaver. I am especially pleased with the duration, compared to other videos ;)
Bruce, your timing was perfect...my poor little mini quad antenna. I ordered replacement antennas for the FrSky D4R-II and am looking forward to your "replace video" Thanks for everything.
chipsterflysome yes. what are the traps when you replace the complete antenna?
Joerg Paysen I contacted the good people at Aloft Hobbies and they recommended this...
" they snap in and have a little rubber like epoxy on them as well. You can just lightly remove the "glue" and pop them off and snap the new ones on"
I will wait for Bruce's video before I replace mine.
This vid reminded me...
A lot of us use ImmersionRC video transmitters and like myself many people have snapped the SMA connector on them as they're very fragile. The pads come off the PCB and there's no way back!
Lesson learnt I guess... Protect the vtx and use an antenna extension to mount the antenna!
It would be great to see a tutorial on how to re-use these broken transmitters as it's happened to literally almost everyone I've met flying with them! I will quite happily send you one in return for a good video ;-)
Bruce. It is more than time for you to allow us to pay for your videos. Not a donate button. A pay/year subscription. I watche everyone of your videos for a year now. I'm amazed by how much I know thanks to you. How much you saved me money not buying crap or knowing my way around difficulties I encountered in this hobby. Please patreon your channel or take a look at Vessel or something else you like. You deserve something for the knowledge you're spreading.
Thank you so much!!! I forgot about this method and ended up buying a new receiver tonight before I finished this video. I wish I had! Thankfully, I think they'll give me a refund. Thanks again for this vid!!! Definitely saved!
4 year old videos saving lives in 2020. thanks :)
thanks Bruce you saved me a long time of microsurgery, 5 mins and it was fixed.
Sometimes the most simple things. are so hard to find.
Thanks Bruce, Keep these little ones coming.
That antenna replacement video would be really nice! As well as where to get replacement wire. Thanks, enjoyed the video!
Thanks for this video.
Question: I bought some new receiver wires and they came with 34 mm exposed, so will I improve the signal strength at 2.4GHz if I snip the exposed part of the inner wire down to 31mm? Cheers!
Thanks Bruce. Looking forward to the video on replacing the antenna. I had one of my antennas chopped in half by a prop strike on my D4R-II.
***** yes but as Bruce was saying there might be more to it.
***** The UFL connectors are somewhat fragile and it is *very* easy to damage them. I'll show the strategies to ensure that you don't create any damage during the removal or replacement operations.
This video help me I don’t even think I cut it to exactly 31.2 but I’ve gained my range back thx a lot 🙏😇
Just did this to fix one of the antennas on my D4R-II and it worked perfectly. Thanks a ton for this Bruce!
You saved my ass tonight. Thank you. I have attended many of your videos and have enjoyed your acerbic approach to teaching even when it goes right over my head. But I'm learning.
does the telemetry really go thru only one of the antenna's? I figured it was encoded in one 2.4ghz signal, with it being a diversity setup and a duplexer. You should do a mini video detailing the technology involved. Cheers
Thanks a lot for this! Just broke the antennas on my new receiver and got really worried.. You saved the day!
Hi Bruce, thank you very much for your tie and expertise!!! One question: you showed the calculation for the aerial length. Does it always have to be a "quarter" antenna or can I also do a "half" antenna for example? Sp instead of 31 mm it would be 62 mm long?
Well done Mr. Simpson! As you always do.
You saved my 30 bucks! I was just about to buy a new receiver! Thanks!
Hi Bruce. As a licensed radio amateur, and having experimented with various antennas for various frequencies over the years, I also found that the best length for the feeder of a 1/4 wave antenna was ANY uneven multiple (except 1), of the quarter wavelength. i.e if 1/4 wavelength = 31mm, then any uneven multiple length of coax that is a multiple of 31mm will be ok. So, NO to 31, YES to: 93 [ which is 31 x 3], 155 [ which is 31 x 5], 217 [ which is 31 x 7] etc. As you also mentioned about velocity factors this feeder length is not absolutely critical, but it's just as easy to get the correct feeder length as not, so why not try? Keep up the great videos.
Regards Mark in the UK
Thank you so much for this Video!
Just broke my Antenna on the miniquad like this some weeks ago. Soldered it including new insulation and screen... Was quite difficult.
If i only knew your method before.
Hi Bruce,love your show mate. Great tip. I am just starting in FPV, got a qav250 to crash :-) Keep posting videos, you are very inspiring.
Thanks for the great vid. Very useful.
Two things:
1) I've finished my 1st miniquad build according to your videos plus a few other resources. The damn thing flies really well! I'm going to post a complete list of what I purchased, where I got everything, and what the total cost was. I'm a complete beginner so it will include everything I bought. I'm really happy with it. But I'd not really call it cheap!
2) On the topic of miniquads I'm hoping you will do a review of:
FPV Freerider RC Quadcopter Racing Simulator. Uber cheap and pretty interesting as a simulation for learning to fly racing miniquads. I'm having some issues getting my Turnigy 9x to work correctly with it. Having problems mapping my channels 1 & 2, but I'll work it out eventually. I'd love to hear your impressions of this dirt-cheap piece of software.
Thanks again for another great video.
Larry Grimes One more thing...I noticed that this miniquad has no ESCs mounted on the arms. How and why?
Larry Grimes Is there an advantage to adding a wire out to 1/2 wavelength since you already have the cable tie running up rather than cutting back to 1/4? Adding a bit is pretty simple.
Larry Grimes This quad (MXP230) has room between the frame and the power distribution board into which the ESCs will fit so I put them their to minimize the risk of them getting damaged when flying through the dense trees around here.
Larry Grimes A 1/4-wave antenna has a different impedance to a 1/2 wave antenna so it would not be a good match to the antenna or the receiver. The result might even be a reduction in range.
Brilliant Bruce, so it's just the length of the exposed part of the antenna that makes up the 1/4 wavelength?
RCTV-UK Yes it is
Great,I have replaced antennas,if I knew about this I would have tried this first,you are a world full of information Bruce
***** great tutorial Bruce!but what is the little copper tube on the end of some antennas like flysky?
Andrew Waters It's a sleeve that provides a counterpoise for the wire of the antenna itself (the bit we exposed). It does improve the radiation pattern of the antenna and can increase range -- but most RC gear has range which is several times the distance at which you can actually see a model so most manufacturers opt to save weight and bulk by not using it.
+RCTV-UK Let me see if I'm right: The length of the antenna WITH the shield doesn't matter. The important length is this slice of antenna WITHOUT the shield protector: 123mm? (or a 1/2: (61,5mm) or a 1/4: (30,7mm)? I'm right?
Today I cut from the root my antenna from RadioLink R9D 2.4Ghz 9-Ch S.Bus Receiver and now I need to fix it.
I have had one of mine cut off at the mount on my walkera f210 for a few months now. I haven't noticed any range problems but i only fly over 2.5 acres. What other problems could potentially arise if i don't fix it? i will get around to it i just have another project i want flying before i pull her all down.
Thanks.
Cheers for video, how come frsky d4r-II is 15mm? Is that because there are two totaling to 30mm?
Looking forward to the full replacement as one of mine is damaged half way up the antenna.
Tom Smith I just measured the antenna on my D4R-2 and both are 31mm. The Rx in the video was also a D4R-2. Could yours have been cut at some time ?
Hey, watched your video today and followed a long as I performed the process myself. Great video great info and great results!!! Thank you so much for this and getting my bird back up there!! 🤘😁👍
Very nice and informative video. Does it mean that the "receiving" part of the antenna is only the exposed part of it ? Can I run the insulated part under the cage of the quad and only care to place correctly the exposed part of it ?
Hi Bruce. Does the transmitting potion of the wire need to be kept straight?
Also, some of the Sanwa 2.4GHZ car receivers dont have any exposed section and are quite long. I was told its probably a full wave or 1/2 wave antenna, so would that whole antenna need to be kept straight ?
Cheers
Bruce, thank you! You have just saved me 25 moneys.
Brilliant tutorial, I've measured mine with my vernier and trimmed. How how much of tolerance is needed? will being +/- 0.5mm make much difference?
8 years later thanks for saving my rc plane
Hi there! Accidentally I cut one of my 6 channel flysky rx about 2 cm in length while I open my courier packet and it's really make me feel bad. Luckily while searching the RUclips another rc youtuber pointed me to your video and what a relief, I don't need to purchase any replacement antenna at the moment. I just follow your very useful mod and hope for the best. Again Tqvm keep up the good works. P.S I'm flying a 3d foamie F3P plane.
Bruce I need to replace the single short wire antenna on an old d4fr frsky receiver as it has broken off, what grade/type of wire can I replace it with?
I know that it must be 31mm long but not the type of wire.
Can I use normal silicone wire or normal copper wire?
Many thanks rct
I have seen this video before, but didn't know where. JB linked to you.
I like your channel 😀
Hey Bruce! In our local flying group we discussed the following question: this is a dipole antenna and you´re manufacturing a 1/2 wavelength antenna here. 1/4 of the wavelength is without isolation and mesh. Am I right if I say that another 31mm (1/4 wavelength) of isolated cable also contribute to the dipole? Thus, 62mm have to stick out of the quad?
wow!!! thank you so much! sliced my antenna when I crashed my quad. exactly the kind of fix i was hoping for
Thanks Bruce - I have broken antenna, but the piece that came off has the wire disappear into a brass cylinder about 3mm in diameter. Whats the procedure for that?
Very nice done... it´s that easy and you don´t need to buy new ones!
Thumbs UP!
Thanks for sharing mate. You're a wealth of knowledge, really helpful for a newb like me and I really appreciate the effort you go to, to do these vids.
+Brian “Mozzzzi” Bloomer Just one quick question, you mention that replacing the antenna on the D4R is tricky. Did you end up doin a Vid on that? Look just like I should unclip and clip the new antenna onto the terminal in the D4R. Is it that easy? Thanks.
+Brian “Mozzzzi” Bloomer nk to a cable tie, is it OK for the heatshrink to cover the clear wire 31mm or should the heatshrink not cover the clear wire?
Bruce thanks for videos. If understand correctly. I should my mix all the whip antennas that come Tx /rx / and what not. Use 2.4 on 2.4 not 5.8. Etc... ??
Ha Bruce , I pulled apart a dipole from a VTx to use the cable and the tip measured 10.2mm. Another was 31mm but both labeled 5.8G. Is there any explanation?
Excelent video Bruce, but I don´t understand why you can divided it by four?
Who does this affect the distance?
Still hopefully waiting to see how to replace the entire length of wire as mine was pulled out from the base. Thanks for this vid though Bruce
I know it's just a matter of time to have the same problem, have you figured it out?
Yeah happened to have a spare cable with connector from when i pulled apart an old laptop or router or something. Basically you just need coax cable by the sounds and you can resolder them. At least hope thats right
@@alcoxy I know this comment is 4 years old, but were you right?
@@alcoxy does the length affect the signal from the RC receiver?
@@brianm6272 to be honest Brian I can't even remember anymore so I can't say. Sorry.
I think the length affects the wavelength not the signal strength
Love your videos! Finished my mini quad using your tutorial and am finally good enough to fly with the goggles on. My first big crash smashed one of my clover leafs on the antenna. I was able to bend it back in place and it seems to be pretty good, but sometimes I still lose signal. Is there a good way to repair one of these or am I looking at buying a new one? Also, is it normal to get less range on fpv in low light? I seem to have about half the range in the evening than I do during the day.
Another great video Bruce , Im flying with assan 2.4ghz and can I use any old wire I havent found any shielding on the unbroken antenna silly question i just want to be on the safe side cheers
I use 3 XM+ rx, 2 of them are old version with 15cm long antennas(overall length) and exposed part of 33mm(roughly). The new one's antennas are 10cm long with 21mm exposed part. I got answer from Frsky that the 21mm exposed part on 10cm works the same as 33mm on 15cm. Why so? Should I stripped it into 31mm.?
This was a very helpful video - thanks for posting it!
That would be great if you could do a video on how to replace the whole antenna, I have a few spektrum rx's to fix. Thanks for the great videos
Hello Bruce, after watching this video I'm wondering why the short range RX have short antenna(s) in form of 'conventional' litz wire(s) and the full range RX have long antenna(s) in form of coaxial cable(s) at least on the RX I'm using then. I read your post here where you've written that in modelling (small antennas) the total length of the antenna(s) doesn't matter. So what's the difference in antennas and in those two kinds of RX?
Thank you my traxxas slash broke an entenna and I didn't want to buy a new receiver so thank you! :)
Did you still have the same distance
2:57 Finally another RPN user! We all know it's better because NOBODY EVER ASKS TO BORROW YOUR CALCULATOR!!!
Another great video Bruce! I am almost done ordering parts for my Mini quad build and also and getting a little thing from HK that has two tubes for the antennas and are a 45 degree angle to keep them up and the right way but if this every happens will try for sure! Thanks again :D
What should I do if my antenna was cut with only a half inch left(real short)?
Problem.. aparently some Frsky receivers come with 34/35mm antennas... are those wrong? would their performance increase trimming then down to 31mm?
I've noticed the XSR seems to come with 26mm antennas which I though was a tad odd too.
Its amazing how the insulation works, blocking the rf signal
Just the video I needed. Thank you
Bruce how about a video on ESC's? The DYS SN20A is being compared to the KISS 18 amp esc. I would love to see how they stack up!
My tip is to cut the shielding a few mm long and then either measure or line up the end of a good antenna and trim to fit as the last step. It's a little cleaner and ensures you don't have to cut the shielding twice.
Does the length of the antennas matter as far as the range is concerned? Because I ordered a SwellPro Swift 2 and received it today and both antennas are approx. 2cm long. Does that affect the range?
To make it complicated: don't you have to consider the velocity factor of the antenna lead, which will make the optimal antenna length a little bit (5-10%) shorter than a quarter wavelength?
superdau The velocity factor applies to the coax itself but not so much to the radiator portion. Also remember we're dealing with a frequency spread of 80MHz here on the 2.4GHz band so it's never going to be an exact 1/4 wavelength of all the frequencies that get transmitted.
Would it be a problem if you shorten the opposite end of the cable to
solder onto a board? I ended up shortening the 2.4ghz cable from my
flysky GT3C before soldering back onto the board. To be clear, the
entire external antenna is untouched, just the soldered end was
shortened by a good inch.
Hi bruce i have a fs-a8s reciver and i saw a video someone had change to a quater wave diapoll instead of the original quater wave monopoll antena. How mutch improvement if any you would get considering the weight you would gain?
Hey Bruce, my Turney transmitter had a brass piece on the end of the wire. I think it was soldered to the wire, but I don't know on the inner or outer braid. It was cut between that piece and the TX case, can I just splice the coax back together?
You saved my receiver, massive thanks.
I often wondered about this. Thanks Bruce!
Hi Bruce
Just wondering if we can extend the Spektrum satellite aerials/antennas to clear carbon and batteries etc? I know Spektrum have a carbon satellite but it only has one long aerial/antenna not the usual 2 of the standard satellites! cheers
Great video Bruce, interested to know what the traps are with changing the antennas over on the frsky receivers.
Bruce can you please tell me what is that trap for young players about replacing antenna?I replaced mine and everything works fine for 1 year!
RCModelReviews - I have a Futaba R2008SB 8-Channel 2.4GHz S-FHSS receiver, with dual antenna, would it still be okay if the lenght of each antenna is different but the exposed cable are at 31.25mm? Many Thanks from Country - Belize.
I need that antenna replacement video
+1! Please!
Me to
#metoo
@@reubenluciano7350 did you make a video of it for us noobs. Not very familiar with RC antennae
great video. thanks question, my sr210 receiver has no coaxial cover. just a 8.5 cm with a single solder point in the receiver. i need a longer antenna and would like to add one but with no place to solder the ground wire. can the battery ground be used for that? since i got the receiver they have upgraded to a longer antenna. i would like to be able to fix the one i have. any ideas? any help would be appreciated. thank you
Excellent video Bruce, can you do one on adding this type of antenna to a receiver that has one (or more) short antennas coming off it's circuit board? I have some Orange R615Xs that would be great mini quad receivers if the antennas would clear the frame.
Great! Still waiting for your hitec radio review. Not much on the web, only some griping about bricked ones. Is the maxima really the bee's knees to say FASST / s-fhss? Is there enough in that radio for a heli flyer to want to convert his flybar heli's over?
pataat oorlog The Hitec is certainly one of the lowest-latency systems around (which is a complete about-face from the days of the original Aurora 9 which was probably the highest-latency radio on the market) but in terms of resistance to interference and range, most of the modern 2.4GHz frequency-hobby systems are now pretty much equal.
Interested to see what you think. Price point seems right. I've heard people allege that support when there is a problem is poor this neck of the woods though. And OMP/Modelflight do not carry them :/ Still
Great video.
Does having the opposing antenna a different length affect it at all.
Eg one side is half the length as the other...
QUESTION, please: about rx antennas; most tinywoops come with a AIO board. And the rx antenna is just a 26awg cable, with no ground or anything else... How come??? How does it work?? And about Lengh?
I think Albert Kim tried to put a regular antenna in his mobula6 and put the ground somewhere and the thing got lot lot worse in range ...
I read a lot of people here asking about shortening their antennas... Am I correct to assume that I can replace an original antenna for a longer one if I maintain the lengh of the exposed end?
I bought an IRangeX RM601 that has 3.5cm antennas - it only has the exposed part with no ground on the rx itself. Is there a way of sticking a longer antenna on it?
Rcmodelreviews hiya Bruce iv broken my flysky IA6 receiver antenna,s will it be a good idea to use RG-316 coaxial wire or must it be replaced with the RG-178 wire Bruce
Hello. I broke my antennae in half. Can I just solder the inner wires together from both pieces or do I have to start from the end that I have left? Thanks. The end that broke has a thicker end than the antennae wire and so I am leaning towards keeping it. (it's the stock antennae that came with ia6b). Thanks
On your next video could you explain the large difference in receiver lengths - eg Flysky is 26mm. Also good to show a BODA aerial particularly for the lower range systems and toy radios to increase range by using that cut off coax shielding.
He answered that question above.
Rob Gale Not really - there is a big difference between 33mm FrSky and 26mm FlySky. That is not down to manufacturing tolerances, it is a design decision. Perhaps to do with tuning sensitivity and interference - just like the old GWS FM park receivers having non 1/4 wavelength very short aerials.
If its only the exposed part of the antenna that matters, can i actually trim the length of both my rx antennas down and do this modification and yet not reducing the signal quality of my receiver?
Yes... PLEASE do a video on replacing an antenna, including ones where you have to solder it in.
Does it effect the range
Thanks great video as usual. Please do the video on replacing the wire altogether as I need to do this on my expensive JR receiver. thanks
Excellent vid, the cat chewed mine thought i might have to throw it away.
How many times can you do that before the whole antenna becomes too short? I realise the end portion`s length is important BUT surly the whole length must be important also?
bmhi quick question, i just bought a cheap basic remote the dsx, i crashed my plane today and was pretty bumbed out cuz it was my first flight with this new remote control, so i was thinking i bought a defective unit right after my other one had just broke and now im out a airplane too which was even more of a bumber but as i was thinking about what could have went wrong i suddenly remember when the guy at the hobby shop put the bind wire to my reciever he pulled my reciever out which means the attena wire was no longer going to the outside of the plane, and when i went to fly it it was fine untill i got about 200 ft than i lost control of it and it nose dived to the ground and was confetti afterwords, do you think it could have been because of the antenna wire? this almost got me back out of this hobby because i always get defective electronics but in this case im startimg to wonder if it all happend because of the antena wire not being exposed. i did a short range check but was lazy and only walked 75 ft away maybe.
Thanks for the vid, I was able to repair the antenna of my rc car :D
Just wanted to say ty this video help me today
Would it be useful to cut the antenna to 1/2 wavelength to be able to have it being further away from the Carbon frame and maybee even have more gain?
I use an old nailcutter instead of the side cutters for small wires. Much more precise since it's got a thin profile and sharp all the way to the edges. I would have used that to cut away the outer braid.
What are the straps that you use to hold the video tx on with? I know you have mentioned them in another video, but I can't remember what they are.
Bob Testroet It's called "Rapstrap".
can i connect 2 antennas cables together? ....i need 50cm antenna cable...i want to connect the old antenna with 50cm new cable....can i do that? nice video !
On Taranis X8r receiver, must the antenna wires be fully extended or just ensure the loaded elements are aligned 90 degree/ 180 degree out of phase?