Get MAX Range on Your SPI Receivers! 🎓

[@AlbertKimTV]

🛒 Receiver Antenna 10 Pack - bit.ly/2Y8tPSx also at Amazon - amzn.to/2tlQQqf | amzn.to/2GPQ7AJ 🛒 FrSky Infinity 24 Antenna RDQ - bit.ly/373oLlp banggood - bit.ly/2S6Yoqx amazon - amzn.to/372hD92 See previous videos on this series.... kzbin.info/www/bejne/e3fIlaJjj8tnnNk kzbin.info/www/bejne/maDTZ6GOnap0mq8 Tadpole video - kzbin.info/www/bejne/jWOyhIJ_nbSnhJY

[@jmoore3854]

Wow over 500 meters on spi I would like to see what it will do on the Mobula 6 board thanks.

[@GKW25308]

It's a yes from me on the mobula board. Thanks for doing these tests Albert, I appreciate the effort. Range is something I'm always interested in improving doesn't matter what the components are.

[@WildCaptures]

That worked good👍🏻 TinyHawk Freestyle would be a good candidate for this upgrade along with a camera😊

[@ChrisParayno]

Yes!! It's a must.

[@outcastfpv]

These are a great set of video's. Considering all of these spi boards come with a specific length (approx. 28cm) of 26awg wire that acts as an antenna which is amazing to me they even get the range that they do being so close to the boards, they aren't single core either, they're multi stranded, I would love to see this kind of a test if you just took a longer piece of 26awg wire (like an xmplus antennas full length) and soldered it without the benefit of coax ground potential for the entire length of the wire. Im no RF engineer (I studied electronic engineering) but I remember antenna grounds were implemented for safety, while in our hobby I can see that it should have its benefits id like to know how much benefit there would be for such short antennas and the frequency we use. Basically the outer coax acts as an electromagnetic shield for the full length of the inner core as the signal we want will be picked up by the active part of the antenna (short visible part at the end with no coax which physical length normally depends on 1/2 the actual wavelength of the radio frequency unless you make an electronically cleverer receiver, like what we use so it can be shorter) and then travels down the wire as a standing wave into the rx, if the coax does its job which is the much longer part of our antenna than the active part, it isolates signals/noise from other frequencies as they will be induced on the full length of the outer coax core and sent to ground and not make it to the inner core where the signal we want is induced. also not to mention other external electromagnetic fields that are not signals from transmitters at all. You can see as antennas work the induced current generates a voltage so there will be a voltage induced on the outer core which is why you'd ground it. I hope what I have poorly explained makes sense. The point being id like to know how much worse a non shielded longer than it needs to be antenna would perform when it cant isolate unwanted electromagnetic fields like for example lower frequencies than we use and other random electromagnetic fields. As most of you will already know any conductor of varying length will act as an antenna for fields of varying wavelengths as this is simply just induction. as a really simple example a UHF (analogue TV) frequency of 470mhz has a wavelength of about 600mm's. If we make our antenna's that stupidly long we'll be picking up analogue tv signals on the lowest UHF band and our little xm plus's will be bombarded with noise it doesn't need to deal with.

[@AlbertKimTV]

I tried this already based on another suggestion. It got a failsafe within 100m or less so not worth exploring.

[@jamiemonkey1362]

You should do a video on setting up and adjusting the rssi.

[@pksteffen]

Nice addition to range. Great for micro or toothpick. Thanks Albert.

[@ChrisParayno]

Yup did something similar with the emax tinyhawk. I tripled the range from stock.

[@AlbertKimTV]

nice

[@anthonymcneil3606]

Funny, just yesterday I put a 9db antennae on my T16. Much farther range with no weight. Just looks stupid. On guard! Been thinking of getting a remote wip to put up high. Top of the car, magnetic base, 20 degrees outside, heater blowing nicely, still have feeling in my fingers.

[@anthonymcneil3606]

Albert. Please let me clarify. My jumper T16 looks stupid with the 2 foot sword sticking off of it. I was not trying to be negative, at all, towards your mod. I love what you are doing and will be modifying all my SPI antennas. I learn from from every video you make. My humor is lost in translation a lot. One of my flaws.

[@andywakelin1380]

500m on SPI is great! I'd love to see you try this on the Mob6 board. Out of the two SPI boards I have the one in the Mob6 is by far the worst.

[@AlbertKimTV]

Yeah, Mobula6 test coming up!

[@boomboomtradingroom9646]

@@AlbertKimTV Yeah, definitely excited to see this one - especially if you have a link for an antenna (that relatively fits the scale of the mob6)

[@allennickles3970]

That is unreal range on a spi board...I think your on to something here...time to get the soldering iron out..lol..thanks great video 😀

[@Ledroneclub]

Thanks. I have to try this on my mob6 🙏

[@RubyS.1]

Be curious to see if you can make the emax freestyle and tinyhawk improve at all.

[@trevorimpulsebuyguy6398]

Why companies dont improve the spi antennas is still a mystery to me. It would be an easy,cheap way to improve there products and sell more spi receivers.

[@AlbertKimTV]

Actually, they have... check this one out, it has detachable antennas... bit.ly/3a0RPyh

[@trevorimpulsebuyguy6398]

@@AlbertKimTV Nice! I have never seen or noticed that. Every company should do that, thanks man

[@yerfavagent]

I read you are doing the mob6 one, but in case you change your mind, yes please to the mob6 mod

[@brokenprop2474]

Tinyhawk Freestyle vid

[@fabianisensee3744]

Mobula6 board would be amazing!

[@billfromelma]

Thanks for the effort! Kind of a bummer they cant figure this out at the mfgr. before they sell a sub par product to us consumers.

[@AlbertKimTV]

They originally meant for these receivers to be only for indoor whoops but now people are using them on toothpicks and they haven't yet adapted. I am showing them this video to help them improve.

[@BigDFPV]

Looks good. Thanks for the tip.

[@franza.d.morales8529]

Interested in the mob6 video pls. Thanks!

[@niz76]

Def interested in Mob6 mods. Mine has HORRIBLE range. (Flysky version).

[@vincertron]

Mine too I go into the next room and it drops out. If I position my spi antenna a little different I do get some more range out of it. It's just super sensitive

[@Catiadr]

My Mobula 6 failsafes at less than 50 ft with an external antenna. I guess I can try cutting it to 28mm to see if that improves it, but I have been very disappointed in the range of this rocket.

[@GolovchenkoOleg]

Hello, I am new to fpv drones, I do not quite understand what an external antenna is, could you explain to me

[@ched999uk]

If the extra range is simply putting a 'different piece of wire on' that would cost fractions of a cent I am shocked they don't bother. Hopefully the manufacturers are watching your vid and make fit the better antennas from now on. Thanks, I have a couple of old antennas that I had accidents with so they don't have the connector on that I will try. Thanks.

[@whileistillcan9338]

Please do the Mobula6 mod.

[@MCsCreations]

Pretty interesting, Albert! Thanks a lot! 😃 But in my Eachine Twig I'm going to put a XM+ really... 😬

[@AlbertKimTV]

Yeah, I just want to try this on the quads where I can save a few grams of weight.

[@chrisdraugel3737]

Great work i like😎

[@drewzkee3y3_of_horus_fpv57]

Hi, I was wondering if anyone may be able to answer this ?.. will this same size antenna connector fit the novice 3 board? It's the toothpick F4 spi D8? I believe that's correct?

[@dynamicfpv]

Hey Albert, I want to install an Eachine Pro DVR into my Eachine VR006, but I use input 2. Where do I land my video wire for DVR recording? I don't really care about the video playback function. I could really use your help buddy.

[@AlbertKimTV]

watch this video - kzbin.info/www/bejne/l3jMaJZmYrOSfKM

[@ho-xo8my]

You could try a 18650 2s 30a 3000mah, @Wild Willy try it on a diatone thoothpick 3" cube with 15min flight time it's on his play list (it not gonna be powerful)

[@Endlesszem]

Awesome info

[@spoki_bones3656]

have you tried testing range for spi rx with a xjt module on you xlite?

[@AlbertKimTV]

X-Lite doesn't need an XJT module as it's built in

[@cyclicracer]

Will this mod work on the FC of a Sailfly X? Also does it work on all Crazybee F4 boards?

[@AlbertKimTV]

In theory it applies to all, assuming you've not damaged the board or wired it up improperly.

[@frankbarajas]

While your results are impressive, I don't understand how that's correct length on the active part of the element? The XM+ and XM receivers have some inductors or capacitors inline with the antenna that change the length of the active element from the mathematically correct length. This was shown by Bruce Simpson in a video some time ago on RCModelReviews ( kzbin.info/www/bejne/jXOokH6npq2Vg5I ). *However, this might just be splitting hairs since the results are so good with the FrSky Infinity Antenna and it might just be that these are in fact "tuned" to that antenna.* Also, out of curiosity, have you tried simply not grounding the new longer antenna, or in other words, making a longer monopole antenna using your FRSky replacements? Just concerned with people nuking a perfectly good FC trying to solder to a ground next to some vital component. *Great job Albert and a tip of my hat to you for all that you have done!*

[@AlbertKimTV]

I have no idea what this is tuned to. I'm just going on a suggestion from someone in the previous video where they suggested using the length from an XM+ receiver antenna. I used a more recent receiver as the length from older XM+ receivers is a different length. However, I'm not really trying to optimize this 100%. I'm more interested to see if there is enough improvement to warrant not using an external receiver and save some weight. I'm thinking these results are "good enough" and for some of these super light micros, this makes SPI receivers more viable than before. As always, beginners should beware. These mods are not easy for those who can't solder.

[@frankbarajas]

Albert Kim - I think you have clearly proved your point and I whole heartedly agree that some serious soldering skills will be required. Hopefully, we’ll start seeing a ground pad for the dipole antenna showing up on newer FCs with the built-in SPI receivers. Again, Albert, great job!

[@HunterMabeeFilms]

Do I simply buy the antenna, cut off the connector and solder directly? It looks like you've done something different with it?

[@AlbertKimTV]

Yes, that's what I did

[@HunterMabeeFilms]

@@AlbertKimTV Thanks alot, So i should be fine to use the FRSky 150mm cut it to a suited length aslong as the active element is 30ishm I think it's 30.22 or 31.22?

[@nfnworldpeace1992]

how much would this improve range of the novice 2 ? thnx for the good videos!

[@AlbertKimTV]

Hard to say for sure. I have messed this mod up on other quads and made the range worse so it has to be done perfectly and under ideal conditions you should see some improvement. The extent to which it could improve will also vary with the environment you're flying at.

[@nikolausspence8958]

Performed this mod and it only reduces range. If you are flying above the ground, antenna underneath actually makes more sense. RSSI is reduced by a solid 20% on FrSky and Redpine protocols after the mod. Extending the monopole or relocating it with coax will similarly reduce the RF performance of the RX design. The negative pole and ground and a ground plane are not to be confused. They are not related.

[@AlbertKimTV]

It's actually quite easy to mess up this mod and I made a follow up video on another one where it didn't work.

[@zrokko]

Could you post a more detailed video and also if this mod works for crazybee f3 and f4 aio fc ?

[@AlbertKimTV]

more detailed in what way? Please be specific, thanks.

[@zrokko]

@@AlbertKimTV hey sorry about that :) more specific in the way you soldered the new antenna. I'm a little scared in doing so minor soldering since I destroyed 3 AIO fc...

[@smokeintheeyes]

mob6 bored please

[@bengalfpv4860]

to where u solder the gnd of antenna??

[@AlbertKimTV]

There are some capacitors next to the antenna. I used a multimeter to find the closest one that goes to ground. Make sure you only solder to ground and not anywhere else. Also, there is a close up photo of the connections made in the video.

[@bengalfpv4860]

thank u bro 👍👍

[@shizukayoshino669]

Does wifi router antenna will work? :D

[@AlbertKimTV]

If it's 2.4ghz. 5.8ghz won't work.

[@shizukayoshino669]

@@AlbertKimTV it's for my flysky FS-A8S micro reciever... :D

[@ThomasShue]

Wiuld this work on a Meteor65 ACRO editon

[@AlbertKimTV]

It probably would. I have not tested it however. Also, this is a difficult mod and I'd say 80% of the time it won't work due to user error.

[@overfly_pt]

Great 👍 👌

[@Rolldeep]

I personally wonder why theres none in the drone world beside military that uses loRa technology then there would not be a range problem

[@AlbertKimTV]

Isn't that new tech?

[@Rolldeep]

@@AlbertKimTV both yes and no it was created meny years ago but then only used by military and a few IoT systems but around 6-8 years ago it got out on the open market for all users

[@NoahN999]

Can I use these with d8 frsky?

[@AlbertKimTV]

For the Frsky version Sure

[@Jee-kj5vc]

Can you install other elrs recever to SPI whoop board? L

[@AlbertKimTV]

What do you mean? Will this work on other boards. Probably... depends on the specific hardware. Might not be universal.

[@MikeAarset]

Micro long range!! So to scale of the craft you did 3 miles! Ha