Can you please do the real measurement of RDC90 vs Hall? Like linearity, noise, precision etc.? There's so much confusion around the premium RDC90 and you are the right person to solve this ;)

I’m REALLY EXCITED for the battery testing 😁😁😁

Appreciate it man thanks for your efforts.

Thanks Chris! One thing that no one has talked about is the addition of a TBS External module! Can you add a full size module or just the nano size and how?

I have been trying out the Jumper T20, and think the balance on lanyard is intentional for ergonomics. When you fly your hands tend to push your against the radio, and because the gimbals are at the top of the radio, it cantilevers and pulls against the lanyard to keep the face of the radio facing slightly towards you to keep you wrist comfortable. Similar to the way keyboards are angled sligtly facing the user.

I perfectly understand why you are abandoning TX16S, I did the same. What I am missing is comparison to Boxer, which is now my daily driver and I don't see it inferior to Jumper T20S.

Unrelated question: with longer screws of course, could I swap my ultralight arms for standard ones to use bigger motors or would I need a whole other frame? Or file the space out. Just thought of that one.

I wonder if they have the CG figured out for when you are using a external module and the battery is plugged in.

Just got this today, and changed to the clear case. Almost as easy as working on a Radiomaster radio. Just that some of the wiring inside of T20 are a little thin, but generally pretty solid, and easy enough to swap out gimbals in the future. I switched from mini gimbals on X lite Pro to this, and because of the large gimbal resolution, it feels more comfortable and less cramped for my fingers when compared to the Frsky X Lite Pro. I always wondered why alot of pilots use those honking Boxer, T16s radios with the full sized gimbals. I know why now, more resolution, and less cramp in fingers whilst flying.

I want to buy a jumper 20 gemini , are there better options? I heard about the insufficiency of a small display, but in fact, a display for fpv is not so mandatory

I hope you make a follow up, long term use video in a few months. I think this radio is very intriguing

Can u Connect any 2.4 GHz ELRS RX dont have to be from Jumper OR?😅

How do you think a Tango 2 user would like this Radio? I like the size of it, i like the gimbals, and i like the 1W internal ELRS already for that option. I really love my Tango 2 but its no longer working properly anymore so im looking to replace it as my main radio with something newer, but similar in size. Im using my Frsky Q X7 w/ ELRS right now and its okay but i really dont like the sticks and i dont like how far you have to push them to go full travel and get the input im used to with the smaller gimbals on the Tango2. I can get used to that but the radio is too big, wide, and bulky for me to want to use for my Drones anymore.. I know the obvious answer would be the Jumper T-Pro 1W ELRS Radio. But ive heard they have Q.C. issues and that people have issues with them breaking or wearing out super quickly. Plus the quality seems like a step down in general, from the Tango2, and i dont want to get stuck with a controller that might not last more than a year. I also have an external ELRS module so i can really pick any radio with a module bay. Internal ELRS would for sure be nicer but not necessary for compromises. The Jumper T20S seems to be about the same width as the Tango 2 and only 20mm taller. So it should feel similiar in the hands, as far as size goes and how far away the gimbals are, and hopefully how light it is.. The reason i bring this up is because i really also like the look and Form factor of the TBS Mambo as well with the ELRS module in it. It seems like a very nice quality radio with upgradeable gimbals and a nice size, but with nice advantage over the Tango2 & T-Pro, like the T20S has, which is more switches to be able to use and assign to things. The Tango2 doesnt have much but its not too bad when you set the push buttons up properly to make use of them for stuff you only use here and there basically and scroll thru them. What do you recommend i look into besides the Jumper T-20S? Maybe something from RM like the Zorro. IDK how good thats supposed to be but it looks like it would work well and has extra switches, and it has good revies. Im just not crazy about the way it looks but its not a deal breaker ...

Chris, any updates on this radio - change of heart?

Good luck with your Jumper T20S, Chris! In my experience, Jumper makes unreliable radios, such as my defective T12/T12 Pro. Randomly gives rapid and sudden ghost stick commands(looking at the channel monitor, it is giving stick commands even when the sticks are not moved). Thought it was bad potentiometers, so bought the new-at-the-time hall sensor gimbals, but same issue. Jumper sent a replacement set of gimbals, same problem. Upgraded to the T12 V2/Pro with the new mainboard inside. Same problem. Broke a bunch of quads, and wasted a ton of time trying to chase down the reason (blackboxing to test for bad gyro, checking ESC desyncs, etc.). Only to one day see the channel monitor on the small screen jumping around, while the radio was sitting on the bench. Can't trust Jumper radios. That's probably why when Radiomaster brokeoff and made their own, starting with Jumper clones, they did better... because they didn't have these defects (barring the weak plastic scroll wheel in the first TX16).

Hi chris.. how can you insert rm5000mah inside t20s easily? I can barely put the 5000mah flat in my t20s so i cant close the lid

i find Kabab's review that was released 3 weeks ago to be the most honest one, check that out before buying as its said that these gimbals are not comparable with ag01's.

Excellent review, Chris! Thanks!!! 😊 Stay safe there with your family! 🖖😊

Looks like a cool radio

Love this radio's form factor and I tried so hard to like it but after first two weeks its power chip failed. Had to wait 2 weeks to get a replacement from China to get it operating again. Then, two weeks later I get out to fly and turn it on and it flashes a couple times and goes dim. Now won't turn on and can plug it in via USB or even charge it. This thing has SERIOUS quality and QC problems. I've gone over 15 years with many of my previous radios without a problem like this. It's unheard of to have this many serious issues, even with a $100 radio. If you value your time and money, look elsewhere for a nice compact radio. I wish another company picks up on this form factor and ability to incorporate the crossfire TX, etc. So many awesome features but so poorly executed.

Been looking to change out my... gotta be 10 year old old taranis, will give this ago, was nearly £50 cheaper from hobbyrc in uk than bang not so good

Looks like a winner to a boat and fixed wing guy. 👍

My buddy just received his t20 and i was disappointed regarding build quality. Plastic isn't stiff enough and radio tries to turn itself up/down when hanging on neckstrap.

This is a great year for new Transmitters.

11:21 Then the lanyard is always covering the screen. That's what i find annoying on my Mambo...

Had some really bad 👎 experiences with the jumper brand when I started with fpv. Hopefully they worked out there customer service.

The facts of the matter are, Hall Effect is more reliable and more accurate than Potentiometers. "Feel" is relative and basically irrelevant.

Chris, Joshua Bardwell reviewed this radio as well and noted that the charging USB for the batteries inside is a slow charging port. Is this going to affect your use as a daily driver or do you normally just take your batteries out of the radio to charge?

Thats a PCB antenna inside the jumper though

How about comfort pinching vs thumbs?

There are way more devices using 2.4MHz than 900MHz, so with 900MHz you'll get much less interference

Issie i habe with jumper is QUALITY

I doubt that jumper is going to do those changes but we'll see. IDK anyone who flies anything without a battery. Once they come out with clear and lighted gimbals that will be a deal breaker from the boxer

I've got the 915, I'm hoping the ranger full size balances it out (100g). My only gripes are the batt connection. But the hm 24tx pro module lasts 5-6 hours on dyn 1w, the 915 lasts longer. And the two top buttons, need attention... Thanks as aways PS. Sony 18650's 3000mah

I wish it was released before the Boxer. I might have given it a try

10:20 we call it "inženýři z NDR někde udělali chybu 😂"

Updating it with the current firmware sucks. Jumper got lazy.

4:24 How can they be so stupid to separate the word "airmode" into "AIRM ODE" and not "AIR MODE" as per the syllables of the word? English is not that hard!

Just looks, Not quality. Everything is cheaply made, feels like a toy.

Biggest Problem: Jumper makes poor quality gear! Sure, you like it now, in your limited use of it, but just wait for all of the issues, problems, and defects to arise over the next 6 months or year. They just aren't designed and built well. 🤷💯✅

Appreciate it man thanks for your efforts.