Can't believe this tiny radio is so full-featured! // JUMPER T20 REVIEW

[@JoshuaBardwell]

Does Jumper have an excessively high defect rate? I noticed that some stores do not carry the Jumper and asked them why. Off the record, one store told me they had too many returns from previous Jumper radios. This is just anecdotal, and it's off the record, so I didn't think it was fair to include it in the video, but I did think it was information that you should know before you make a buying decision.

[@Knirwes]

I'm using the Jumper T18 Pro and T-Pro v2. Haven't had any Problems with them but early production T18s had issues with the SD-Slot as far as i know. Otherwise their documentation isn't as good as Radiomaster. A lot more digging through forums and github. The T-Pro v2 for example is not compatible with the T-pro v1 firmware and after a failed flash i wasnt able to find the original firmware for v2 on their website. But overall im very happy with both radios.

[@tomverlaine728]

Original jumper T-lite still going strong for me, use it every single day.

[@HangingBack]

Legit my first ever radio was a defect Jumper T-lite V2, DOA, but they did send me a new one and that works fine (for now)

[@andrebalsa203]

No complaints about Jumper quality from me, I have a Jumper T-Lite V2 ELRS, using it every day without any issues ever since I bought it last year. I wouldn't hesitate to buy the T20 with the Hall gimbals but I just don't need yet another radio, I got three already (TX16S JB Edition, TX12 Mark2, Jumper T-Lite V2)!

[@NightimeBurnout]

can confirm jumper offers zero support with an insanely high defect rate. we have C R A T E S of dead jumpers that they refuse to deal with. dropped them entirely because of it. your quality control section of this video perfectly showcases why you cant trust these things. built like garbage.

[@JoshuaBardwell]

I forgot to put the standard disclosure text on this video, so here it is. This product was sent to me by Jumper. I did not buy it with my own money. I will keep the product after the review is over. I have not been paid or otherwise compensated for this video. Nobody has reviewed this video or required any changes to or restrictions on its content.

[@Lensr]

Love your honesty, Bardwell. I don't trust most of these YT guys but you are continually trustworthy; thank you for setting a great example!

[@ThePieSnatcher]

Always got that upfront honest way❤

[@NightimeBurnout]

honestly send it back and make them pay the shipping. no room for companies looking for a quick cash grab from pilots

[@bspringer]

About the charging circuit: USB-C chargers actually don't apply ANY voltage if the USB-C port on the client is not implemented properly. I noticed that some FCs don't work with C-C cables, but they work with A-C. That's the same thing. It literally only takes two resistors on the PCB (from the CC lines to ground), to enable 5V output from USB-C chargers. Sad thing that some FC manufacturers and Jumper just don't care about compliant USB implementation

[@DragonFinlay]

Ok, I've been looking into FPV for about 2 weeks now, and I believe a big Thank You is overdue at this point. I'm doing lots of research trying to make sure I make educated purchases, and your videos have been invaluable. This radio (or rather the V2 version) seems like it's made for me, and will probably make me happy for a long time - both in the sim now, and with real drones later.

[@JasonParham83]

Been waiting in this review since the T20 dropped. Thanks JB. Really appreciate your perspective.

[@giantman261]

I recently bought the T20 v2. Some of the quality control issues have been addressed. ie wires have been glued to the switches, circuit boards seem to be higher quality. All in all very happy with the radio.

[@andrebalsa203]

Thank for the excellent review, as usual. I actually watch all your reviews even if there is no chance I'll ever buy the specific product being reviewed. Why is that? Because I always learn something new! :D

[@ThePieSnatcher]

This'll work for me as I like my gimbles so loose the throttle can't hold itself up. Makes it feel so much smoother and flowy

[@genjitsu7448]

Just when I thought the Radiomaster Boxer was the king this one comes along... got to say it has an odd but very appealing look to it, I really like the large heatsink on the back of the radio, the 21700 batteries are great, the folding antenna, the full size gimbals, etc. About year and a half back I really wanted a TX16s Max with the color screen but did not have the funds so I ended up buying a TBS Mambo - which I have been very happy with. No problems to speak of, I have just about every single protocol you can get with built in tango and modules for ELRS, etc... I bought the radio because I did think that this form factor was ideal, the price was 1/2 of the TX16, and they did promise to add EDGE or OPEN TX to it - they still have not done so which bugs me quite a bit - almost enough to dump the radio and pick something else up and with this Jumper there are now many great contenders. I bought the TBS radio also because of the quality of performance that I believed they had in their products which i do think is true, they make class leading stuff but hey guys, there is now a lot of competition for the Mambo. I guess I would ask about Tracer, it really does have some great specs so I am not sure why it does not find much support. I finally broke down and bought a receiver and installed it and it flies just fine. I know Bardwell did talk about tracer on this radio and questioned why they chose tracer, perhaps I will go revisit that video. Cheers

[@brianfreland9065]

I was so excited about this radio until I saw from multiple reviews how they built it so cheaply. I really wanted to love this radio because it's everything I wanted in a radio but the inside of it is just kind of gross to me lol. Oh well, I'll settle flr the boxer....it's not the exact form factor or looks I like but it is super comfortable and well built. Not to mention cheaper in price. Boxer it is!

[@Dorff_Meister]

On my Boxer, I re-purposed my Yaw and Throttle to be momentaries, two on Yaw on one channel, the two on Throttle on another. I use one of the Yaw trim's (trim-pressed-right) as my Pre-Arm. I really like this configuration. I currently probably under-utilize the one momentary as a "Timer Reset" button.

[@7871Jason]

Love the Sun Tzu quote! Thanks for what you do! I am excited to build my first FPV drone off your kit and follow along. I have been a lurker for a long time...enjoying your content!

[@smoke2584]

I did bought this recently due to the fact that i loved the way of adjusting the stick travel left-right. I couldn't bear how long the stick travel from my old x9d and radiomaster tx on my short ass fingers

[@JohnStenborg]

…ergonomic alert…i bought two radiomaster tx12 when they came out…tried to love them but holding that little radio flying cranked my hands…square small radio got my hands closed to each other in a weird locked angle…bought two zorro and problem solved…the angled grips on a gamestyle radio got rid of the cramped wrist…when elegantly designed battery backpacks the battery capacity problem was gone…but that little jumper radio is spot on…small and large at the same time…the absolute right amount of switches to extend the use from quads to fixed wings…i want to own one and probably will…but also probably selling it after cramped wrists again…thats our hobby in a nutshell…

[@wavesummit]

I find with the wires which use silicone sleeve is that the wire breaks inside and you can't tell since the silicone sleeve stays intact.

[@BluestarP3D]

Start this off by saying that your channel has been my goto for learning and studying about the different systems and peripherals for this hobby. It has been immensely helpful given how in-depth you usually go, and you can see this with your passion in the hobby. It's been great as a soon to be drone flyer. I like to research the hell out of something prior to purchase, juggling between specs and compromise. You've been always helpful. With that said. I really looked forward to your input on this controller. However, I felt a mostly large bias for Radiomaster. The lack of mentioning the 1mw output, is what caught me off guard as it was stated several times in the Boxer review. Paired with tons of enthusiasm and emphasis on how great that is for that form factor and price point. The disagreement over 21700 batteries was big as well. Luckily for me, since I worked in the vape industry for several years, I have tons of 18650s and 21700 batteries and chargers, that I just skipped over that. Something I don't normally do in your videos. The biggest turn off for me with every Radiomaster controller is none of them esthetically look pleasing to the eye. Which matters nothing in hindsight... But is just, "one of those things" that will attract me to something in the first place. Your description of the gimbals was a bit off as well, as I'm used to every other Radiomaster review showing how "accurate" they are. In-fact, everyone else mentions how nice the Futaba like gimbals are, on the Jumper T20. So it leaves me confused. To say I'm now conflicted on what controller to get, is an understatement.

[@chopperharly]

i learned something today thanks Joshua

[@giltroxx]

Amazing video as usual, whats the better option for this 2024? jumper t20 or radiomaster boxer?

[@HrDux]

The internal Crossfire mod is brilliant. I wanted to get a Boxer and hack a CF Nano TX in there. Too bad there's no SD card. I started logging telemetry data just in case and it helped me find where my quad fell in a mountain. The internal storage would fill up too quickly and you would have to remember to clear it out often.

[@AT98AT]

@HrDux Is it possible to install a crossfire in a radiomaster boxer?

[@HrDux]

@@AT98AT If there's enough room, it probably is possible. I never did it on the Boxer. If you're going to try putting a Crossfire module inside your radio, make sure that you shield the electronics with copper foil. And make sure the copper foil is insulated so that it doesn't short anything. The Crossfire module puts out a TON of RF and it will interfere with your controller's battery voltage sensor, the trainer port, speaker, and the gimbals. Especially at 500mw and 1w modes.

[@AT98AT]

@HrDux I just ordered a Boxer, I'm going to try to install crossfire inside, unfortunately I didn't find anyone on the internet who did it on a Boxer, I don't know if I'll succeed because it seems like a big operation to me, but thanks for the advice, nice of you!

[@wingsounds13]

Interesting radio with some cool features. I really like the six customizable switches and really REALLY wish that RadioMaster would use this on their radios. Sadly, there is one fatal flaw with this radio - JUMPER. They have had enough quality issues that I will not touch their radios.

[@Dan-ro6nj]

I actually prefer this smaller size screen, precisely because it's OLED and not LCD. Easier to read, nicer to look at, completely sufficient in size imo.

[@tomverlaine728]

Giant screens on openTX has always been such a turn off, glad they stick to smaller now.

[@kayhan66]

I'm 2 minutes in already enjoying the review as always

[@mxracingunlimitedltd7784]

I dont have a problem with my Tango 2 screen because the OLED makes it nice and clear. I have full size screen radios with edge tx and open tx and really you can do everything just as fast, especially if you already know the menu's and menu structure from already having an opentx radio. Its an interesting design, but i think id really like to hold it and try it before i bought it which would be a problem. I love the Boxer and also like the Jumper T. I want to change over to ELRS so im looking for a 1W internal ELRS module or ill get something thats 4-in-1 and use an external module for the ELRS, but im really trying to keep the weight and complexity down if possible..

[@athenovae]

Hi againnn 🙂 it’s been a long while since I’ve been flying. I still got the Qx7 since 2017 and I’m wondering if getting the Jumper T20 is an upgrade or side grade.

[@MCsCreations]

Thanks a bunch for the review, Joshua! 😊 Stay safe there with your family! 🖖😊

[@shihu5005]

I am still using x9d. This is the first controller that makes want to switch, so far.

[@dedalom8376]

Hello Joshua! I have a question, can I bind the jumper t20 v2, 915mgh to the jumper R900 receiver? Thank you in advance!

[@dakzer55]

Thanks for the review, worth the punt to try supposedly higher resolution of full sized gimbals. As I currently use Frsky X lite with small gimbals. Hope it makes a difference. I didn't want to make the expensive jump to Radiomaster Boxer as nice as it is.

[@airblenderfpv]

Does the ELRS version have the backpack feature?

[@Sugalime3D_FPV]

Looks better than Boxer to me

[@jtcustomknives]

Could you charge the internal battery’s through that xt-30 connector on the back?

[@dakzer55]

Shame Jumper get a bad wrap for building bad quality control radios. But to be honest, after getting a Jumper T20 replacement clear case, it felt so solid that as long as you check over the internals of the radio when replacing the case, it is a good value way to try full sized gimbals if you feel the larger radiomaster boxer/t16 are too much of a pro upgrade.

[@trumblez]

This thing is great

[@riofpv]

My radio❤❤❤😅

[@dsrumbung]

I have ones, I love it but I need wireless trainer and there is no port for Bluetooth module like tx16s/t16

[@blueskyfpv]

Do you know what type of BMS you used in that 21700 pack? Its a much cleaner way than having balance wires on the battery inside the radio.

[@JoshuaBardwell]

It was a pre-made pack that I bought once upon a time. I don't know what BMS it was.

[@blueskyfpv]

@@JoshuaBardwellThanks for the reply. Just seeing it has given me some ideas for packs I need to build.

[@definingslawek4731]

I did just buy a boxer recently but I may move to this considering I moved from the X lite to the boxer and I find the boxer HUGE and heavy and I find it tricky to hold it comfortably and have my fingers have access to full stick deflection.

[@yatzeegamingop]

15:26 There's a video of a guy who was flying a t-motor 1s toothpick in an insane way. In the meantime, gimbals on his t-lite were creaking so much that you just cannot focus on the flight :D

[@tiagotiagot]

Is anyone making radios sorta like in the Steam Deck form factor, with the screen doubling as FPV display with built-in analog receiver and ports to plug third-party video receivers?

[@BlackHammerOne]

Hi, I like the remote but need like a tighter feel any recommendations for springs?

[@Gosuminer]

I'm still on a QX7 and the form factor and features are compelling. But how did Jumper manage to make this thing look so extremely cheap?

[@grzesiek9514]

I had an opportunity to play with this radio. For me it's too big, I much prefer my Tango 2 with smaller gimbals. I just feel that I can't use full range of gimbals when they are so big. I don't know why because my previous radio was Jumper T16 which also have full size gimbals. But somehow T20 feels bigger. But yea T20 is really nice.

[@MountaineerFPV]

Please let us know about the charging situation. Sucks it cant be quickly field charged 😳😤

[@grabejud]

Better charge the battery outside. Charging will take you ages if use internally

[@andycapusta7572]

I charged my t20 with 5000mah 21700 first day when I got them and it haven't discharged since last week after several days of flying and all days playing with it :)

[@edgardeslage176]

@JosuhaBardwell what 21700 do you recommend ?

[@alexandr0id]

What about Pocket? I am surprised J20 was not compared to that one since it's also a smaller one

[@tomverlaine728]

Pocket is better than this if you don't mind lower gimbal radius

[@gazafpv]

​@@tomverlaine728I own both and I diagree they aren't even comparable

[@Autonomous15]

is this form factor not similar to the Radio Master pocket???

[@kjngmax]

I just bought T20s radio. I have question with 6 funtion buttons next to each other. How to make 6 buttons work independently? Now i just turned ON only one of them

[@sherman77]

Is anybody know more regarding CRSF internal module mod, made from NANO external module dissasembly? When it can be released?

[@sherman77]

Moreover I’ve bought that set on Aliexpress. Comes with zero info, no single sheet of paper. Null. So I bothered lady from Jumper customer service with question: “Shouldn’t be there any info how to install it without damaging new radio?” Answer was: “Nah…” Bravo Jumper RC!!!

[@vinny5203]

That seems like a lot of long switches to be stuffing in a small bag. Neat looking radio though.

[@siniestrorave]

excelente radio! la recomiendo.

[@wampelt]

When i watched this video, i placed order :) İ just bought this radio. Normally i use t16 series. But its very big and heavy. İ have only 1 question. Can i use lua script as graphical telemetry widget with this 1.3inch screen? İ saw some guys using lua widget with 1.6inch screens.

[@sunnesonne]

Tx16s vs this for starting?

[@ddegn]

I haven't watched the whole video yet but I'm betting the TX16S is likely the better radio for starting. The touchscreen on the TX16S is really useful. I'd only get this new Jumper radio if has some feature you really want more than a nice color touchscreen.

[@AxelsTech]

What do you suggest for my first radio? jumper t20 v2 gemini or Radiomaster Boxer?

[@ichi1082]

Surprised you didn't compare it to the Tango 2 - which shows its age with its lack of EdgeTX or even OpenTX support, but still has a rather good build quality.

[@_bdub_]

I don't believe you can use AG01 with the T20 because those gimbals have a 6-pin plug while Jumper is using 4-pin but correct me if I'm wrong.

[@ginosantiago3061]

The biggest problem is that there is a PCB board in the way

[@aasenov]

Some japanese guy managed to fit ag01, but he apparently made a mod to the connectors and had to 3d print some stuff. Post was in japanese and there wasn't much info on it.

[@haell_420]

Hi, is ev800d still best first goggles, or maybe if id want to invest more money is there something better than cobra x under like 300usd can be used (used cobra x is 200/220 in eu). Thanks in advance

[@tomverlaine728]

It's the budget king still (I use the newer dm version), and I still use them for analog. The magnifier attachment is a must for my version. Was looking at cobras but can't justify that price increase for what it offers, the HDMI on board if you wanted walksnail introduces input lag as well. I'd get that 800, fly and save for some hdzero gogs in the future.

[@mitrich_fpv]

these sticks are installed on the T-16 Pro?

[@MatCron]

i love color touch sceen, too bad is missing in this radio. It might be too much in fpv where screen really doesn't matter, but sometimes is a plus without goggles. Lots of channels is a pro, no color touch screen is a no, at least for me.

[@Remont-ochkov]

Доброго дня, підскажіть чи зможу я встановлювати через адаптери інші зовнішні передавачі нано чи мікро Crossfier, та інші частоти? Цей пульт підтримує потужність зовнішнього передавача до 2 ват?

[@sulkhanamami]

which one radiomaster boxer or jumper T20?

[@justanotherfpv]

That’s hot!!

[@mysticguido1]

Would like to ask a Question: I have a Jumper T-Pro ELRS. Looking to upgrade Transmitter. Which one would you take? RadioMaster Boxer or Jumper T20, looking to be able to add ELRS Ext: and have DMS internal, I fly Rekon 6 and Aeroscout RC Plane.

[@yoyomin]

This is basically a t pro with some more switches. Built as cheaply as all other jumper radios. Avoid this.

[@mysticguido1]

@@yoyomin My T-Pro doesn't seem cheaply as you say.

[@martr]

Unfair I guess, but I have an old Jumper T16, and it was a nightmare because the ribbon cables were unreliable. They even seemed to shake loose when the haptic was used. When flying you really want to have confidence in the reliability of the design and manufacture. I switched to radiomaster and cant see any reason to switch back to Jumper. Also, no momentary switches is an "own goal" by Jumper. Colour touch screens are hype and not necessary, but this tiny effort about the size of a wristwatch is not viable for my use.

[@NorgeSquad]

I've Flown FrSky Taranis X9D stock gimbals since 2017. they are super shitty. and they have stick drift very much. But I can still shred. Planing to buy AGO1 for my X9D with an adapter to make it fit

[@technicalsupport6983]

I bought this radio but don't know how to get telemetry data in my mobile pH via Bluetooth or wifi from the remort for long distance . Please show how to activate or add external bluetooth module to this remort .

[@JoshuaBardwell]

I have no idea how you could do that.

[@technicalsupport6983]

I found that Internal module have Esp 32 Pico D4 . .... Then how to activate that wifi

[@loudogg78able]

Can you please make a video on how to update the firmware please

[@JoshuaBardwell]

The radio ships with the latest release of EdgeTX on it. Right now, there is no way to update the firmware until EdgeTX 2.1.0 comes out. When it does, this will be how you update it: kzbin.info/www/bejne/gl7NkKCAnc59ppo&ab_channel=JoshuaBardwell

[@loudogg78able]

So bout the t20s Express lrs 2.4 can't bind it to my drones and they're running 3.2.0 plz help

[@JoshuaBardwell]

Ok so you need to update the ELRS firmware not the EdgeTX firmware. Use this tutorial: kzbin.info/www/bejne/g3ephqaEbr97ibc&ab_channel=JoshuaBardwell

[@gonzafpv2843]

Hello iam having a problem . I have a brand new Jumper t20s and a foxeer 2.4ghz lna reciever. I have follow the expresslrs guise for setting everething up. But at the bench test 25mw at 1 meter i get -100db on rssi1 TX. And i also get a critical alerta of low rx signal. If i move the radio like 0.5meters away it Will failsafe...any nidea about this?

[@animox6303]

What was the fix?

[@userIDONTKNOW]

Btw. thiner wires can transmit signals faster than thick wires. But not sure how much it matters on hall sensors / potenziometers.

[@pongmaster123]

don't spread BS!

[@userIDONTKNOW]

​@@pongmaster123The thickness of a wire changes the impedance, capacitance and so on. For signals you want a low capacitance, because of that you pick a thin wire for high frequencies on pcb design. Im not gonne claim to know everything, even after me designing pcbs back than. But as i said, not sure if it matters on a gimbal sensor, even if it is pulled with 1khz. And maybe the term "thin wires CAN" wasnt the best choise. Its more like, can you let high frequency signals threw it without any negative effect of noise.

[@jtcustomknives]

Thy no longer offer the hall sensor radio. It’s strange that it was cheaper and the one thy pulled from production.

[@andycapusta7572]

It is still widely available through aliexpress etc. Just got mine from there

[@Voidroamer]

how would you use crossfire with this?

[@Johnn_T]

Radiomaster/Jumper is SOOOOOO dated these days, but i guess it dont matter if you have your goggles on. The TX16S today compared to all other brands looks as dated as the Taranis X9D plus did to the TX16 when it first came out (and that old taranis is still a really nice radio to hold). Good to see jumper give you stickers to go on buttons that you cant see with goggles on anyway lol

[@kestrelfpv4712]

What?!! Long press to page back?! Ffs, 5 years in the hobby and I never knew this.

[@machinedred]

Can it bind to spektrum car Dsm surface rx

[@christopherconkright1317]

Unless in the field just use the companion app why do set up on the controller when you can use the computer monitor

[@denisromaniuk9489]

Just got new Jumper T20, works well with drone, but my Mac can't see it at all. SD, Joistick (clasic/advanced), no reaction, or no 'device inputted' sound. I've tried diferrent USBs from the package including. Have anyone had a similar issue Mac (m2) -> Jumper T20 Joistick connections issue?

[@JoshuaBardwell]

Are you using a USB-C-to-C cable? Sometimes that makes problems. Try an A-to-C or a USB hub with USB-A on it.

[@dimitris470]

I find XT16s etc to be obnoxiously huge. I like this more compact form factor with full sized controls. But I do not like the unconventional layout. If they positioned the buttons etc more conventionally, they could have fitted a normal-sized display. And don t even get me started on the weird external module slot that has to be bought separately...

[@bengordon7635]

I have the original Jumper T-pro and still works incredible ,, ... the sd card is garbage .. did replace it with a better brand , , The 1 problem with Jumper is the use thin wires and twist them too tight , grounding out on each other ,,,, but I guess they have to cut cost mm easy to replace with silicone wiring ,, I want the T20s but my Jumer T pro V1 still works great ,,, I used the T16 with the RD gimbles it was nice but I still fly the same with cheap gimbles I am so used to the $90 radio and still smoke my friends with their $400 radio hahahah gagagaga The best way to start flying is to use analog first then go to digital because you are going to crash alot .. once you master analog ,,, Digital is incredible

[@SpirusFilms]

T20 vs Radiomaster Pocket?

[@Remont-ochkov]

Ця апаратура працює у симуляторі?

[@jondouglas7051]

But JB, the upgraded gimbles make you a better person.

[@SiNFPVGUAM]

Still love my tango 2

[@andycapusta7572]

I have both, and holding t20 is very similar comfortable feeling. Though I wish those weird elongated front buttons were more tactile

[@HansBaier]

I had to resolder a broken gimbal wire twice on my T-Lite V2.

[@Hallenbeckjm]

My expensive Futaba 10px surface radio and even my tx16s (top usb port) dont work with USB-C to USB-C. There is a lot of info about this around the internet for many devices. Lazy USB-C implementation.

[@jestingrabbit]

You could turn the 6 buttons into 3 momentaries

[@cshaw317]

Hall sensors are superior to pots regardless of what Jumper think. It’s a basic upgrade pro gamers do to their controllers as it can reduce the dead zone of the stick without having stick shift which is caused by the pot sticking slightly of centre. Hall sensors have no physical connection other than the bearing, this means no resistance and no wear and tear. I see it as how the optical mouse is an upgrade to the roller ball mouse if anyone remembers those! 🤮

[@jonhaze7537]

Radiomaster I heart yew

[@MegaMathew79]

Sadly AGO1 cnc gimbals don't fit (at least without some heavy-duty dremal action and some internal electronics re-arrangement). KababFPV just ground down the gimbals in this video with a Dremel to get more throw. If someone does figure out how to get AG01s to fit, I have a brand new pair of AGO1s in the draw, all rewired to fit jumper plugs, ... perhaps a 3d printed shim is needed.... I'm keen to get them to work!

[@Cak3Official]

I managed AG01 to fit with T20s, you can check it on my channel

[@MR.A-p1s]

they made radio master poket didant they?

[@tyborg314]

the zorro would be perfect if they got rid of that comically large screen and put a pocket sized screen in there with 18650 batteries

[@ko1n570]

review jumper t14

[@RubyS.1]

Its weird. Jumper needs to focus less on features and more on quality. T-16 had ribbon cable issues, t-lite had charger issues.

[@adywert]

Rdc90 ghimbal is a mecanical ghimbal -+3% error vs hall 1% error

[@Arek_R.]

Build quality is piss poor, especially with those red switches, there is absolutely no excuse, they could use tiny PCB worth 5c, solder the switch first to it, and then have some nice big pads for the wires with some hole for the wire to go thru for strain relief. Charger incompatibility is caused by them just having wrong wiring of the USB-C plug, missing a resistor or something, tho ideally they should have some handshake IC that will work with everything and negotiate nice juicy 2A, such IC is very cheap like 30c. If you send me high res pic of the area around the USB-C connector I can verify if it's indeed missing the CC line resistor(s). At 0.8A and 2S 5Ah cells it will take like 15 hours to charge, painful. I currently use jumper t-pro and it also has very slow charge time and also USB-C incorrectly configured was thinking to re-design the PCB but I can't justify the effort for just one off PCB.

[@joelmulder]

If ever I buy a new RC to replace my Taranis (which I’m starting to feel is way too large), it’ll be this or one of its newer versions. I love the overall design and form factor!

[@joakimjocka8022]

wow, i think ill get the t20s over the t pro

[@brianfreland9065]

This radio would be just fine if it were 100 pr less...but frankly, asking for over 100 when the inside of the radio looks like a child assembled it is just upsetting. Almost feel like they're trying to get iver on my by doing so well on the outside and thrn hiding all that crap inside haha

[@ali3n24]

Wrong video name! It's JUMPER T20S with RDC90 Gimbal

[@LeeeeeRooooy]

Yes ! It seems that Joshua doesn't know that he has a T20S, because he said at 30:16 that the RDR90 are useless, while he doesn't test the hall effect gimbals.

[@genjitsu7448]

So I really like this radio... except the ELRS heatsink on the back got me thinking. While it appears massive (which is good to sink heat) there is no fan but really what got me is ... does it make sense that the external modules bolt onto the heatsink? I guess my question is does it really even matter? Will the external module block cooling to the heatsink causing the ELRS wattage output to drop down due to heat or could it heat up the external modules in a way that mucks them up... probably not, just a nitpick i guess but has anyone else had this thought?

[@su_K3N]

That thing is hideous 😂

[@aasenov]

Best looking radio out there. Too bad its made by a subpar company and the launch was such a mess. T-20, T-20S, selling hall sensor gimbals that nobody has even seen yet.

[@bulufish8208]

I'm staying away from Jumper. Way to many bad radios when I started fpv. Customer service is nonexistent PERIOD.