Jumper T18 vs RadioMaster T16s TEARDOWN
But if you've only come to find out which of these two radios is the best in my considered opinion it's this one it's, the radio master, it has fewer flaws than the jumper. So now, if you're intrigued, please bear with me and i'll. Tell you why? I think the radio master is a better radio now on the face that both of these radios are very similar and they're, derived from the original jumper t16. This is the pro model with the hall effect sticks, but they're derived from this. This is this was a breakthrough kind of radio when it was released because it had multi protocol module. It ran open tx. It was pretty much the same layout as a taranis because it had all the same switches in the same places, but it had a nice big, bright color screen. Although i don't, like color screens a lot of people, i do like color screens, even if i don't um it had a thumbwheel like the old jr's, maybe ljrs, with a thumbwheel on there, and it was just you know, a pretty kick ass radio. A lot of people bought them. A lot of people have used them a lot of people, love them. There'S been a few issues, though i haven't had any problems with this particular unit, but other people have said all the ribbon cables in the back, give issues and so forth. Generally speaking, those they're not ribbon cables they're flat flex cables.
They tend to be pretty reliable unless you are exposing them to a lot of vibration or movement, and i would have thought in the back of a radio like there's, not a lot of movement. If you have this sitting in the back of your truck and driving along bumpy, gravely road, yeah you're probably going to get problems. But if you treat your transmitter properly, the flat flex cables and these shouldn't cause too much trouble. If they do. Jumper is happy to mail, you out a replacement set. I don't know if they charge whatever but it's, not a good look that they have to mail out and of course, this whole thing goes right. Back jumpers had a bit of a check in history. In terms of getting things right now, my original jumper, which had the separate multi protocol module, i had problems with the sd card, the sd card, wouldn't read and then the thumb wheel was crappy, so they sent out this kit. I sent out a little kit which included a new sd card reader and a new thumb wheel right that was supposed to solve the problems, so you think okay, they learned from that great, but let's. Take a look now. Let'S. Take a little quick look at first of all at the jumper. Now a lot of people who've just bought the jumper t18 found the thumb wheels. No good and the sd card doesn't read properly that's exactly the problems they had with the very first one.
So why did they repeat that problem? Did they not learn from that mistake and that's concerning i'm always concerned when manufacturers make the same mistakes time and time again, because obviously they are just not they're, not listening to the customers. You know no one was happy to have to replace bits in their original jumper. Nobody should have to be upset that well, the same problem seems to be occurring with some. I say some of the new ones. Now they said it was just the review samples, but apparently i was watching pavel's channel i'll put a link in the description to that video and he was saying other people have pavel has experienced this and other people have experienced the same problem on their production radio. So, ah you know what do you? What do you do? What do you do it doesn't give you a lot of confidence in jumper themselves, and so the other one is the radio master. Now they seem to have done a better job. They seem to just spend a bit more time. Look. This has got a metal scroll wheel that feels this feels chintzy and cheap, and you know sort of thing you'd find on a on a banggood toy radio. This feels professional it's metal. It has a much better yeah it's, a much better feel to that particular scroll wheel and it's the little things that often make a huge difference in terms of how you, like a radio now there's other bits, i don't like so much.
I mean they put these. These buttons on here they're, in the shape of i don't, know spanners. What are they there's? Some strange shape there and they, because i don't know i just like playing buttons. So hey you know, there's, pros and cons. The ideal radio would be a blend of the best of this and the best of that, but we can't have that we've just got to choose one on the other right, so i already did a video on the styling of the uh jumper t18. You know the faux carbon fiber you might like that you might not, but there are some other subtle differences notice. We have three buttons here, but we have four buttons on the jump and that's quite nice, page up and page down are just so much easier than having to scroll and mess around, so they did a good job there, page up and page down now, there's also Uh, what are these buttons? Oh, these are the cis. This is the sys buttons there yeah. As you can see, i haven't spent a lot of time playing with the radio. This is a a teardown. Basically, this video but um they've got the two power buttons here on the jumper, which is kind of nice, because you don't have to mess around. If you want to turn it off, you don't have to mess around holding the button down until it goes off. You just press these both ways.
There'S, you know these little things. Both companies have tried to innovate and try to improve on the basic jumper model and to a degree both companies have succeeded, but to another degree they've both failed because they've overlooked some. Some of the real basics like, as i mentioned in my first video, the these sliders there's, virtually no detent that's so hard to get the center position now. Radio master – i don't, know if it's just this one, but this is a lot firmer. It is still kind of you know, but it's much firmer, and that was one of my complaints and when i spoke to radiomaster, they said yes, we've listened to your complaints, we're going to deal with them. This is almost clicky. This almost clicks that's much better than the jumper. Now we've got these little ones up here. This also got a firm detent on that one and on that one they both have firm detents in the center with the jumper. Was that a vague, a very faint detent in that one, possibly okay, this one, nothing can't, feel the damn thing, so they they have listened. The radio master has listened jumper has said nah. We don't care we're, going to make the same mistakes in our next radio. In respect to the sd card reader and this little twirly knob so um from purely a warm fuzzy feeling aspect, the jumper's already way out in front way out in front let's.
Take it a bit further. One of the things is batteries, let's turn them over. They both use batteries, isn't it surprising it's, no coal required and there's a different size battery compartment. Now this has a battery compartment for 18 650s and you can throw a couple even comes with a holder. I think i'm not sure i can't remember if i had to hold with that. This one has a much larger. It has a 18650 holder but it's a much larger compartment. So you can put a lipo in there much harder to put a lipo in here, because it's, a smaller compartment gives you much more choice, much more flexibility for your battery operation, that's kind of good that's kind of nice. I, like that let's also look at the ergonomics on the back here. The grips on the on the jumper are quite thin and you know there's no real meat to them grips on the radio master nice firm. When you hold this radio, it really does feel nice. You can get it get a finger grip on there going to drop this, especially if your nitro fly with early hands you're not going to drop this radio. You get a really good grip, so this wins. In that case, however, the jumper has the foldy bendy handle, which is really really handy. I love that foldy bendy handle radio master it's a fixed middle handle it's far less convenient putting that in a in in your backpack and things this.
This gets in the way. It'S nice much nice to have it folded out of the way, and you can actually see that because another plus for the jumper, the jumper, comes with this wonderful little carry case. I love carrying cases for radios because i always throwing radios in my pack. If i can throw a radio in my pack, i use it much more because i go out and fly in the field walk around that sort of thing now. So here we go. You get this lovely little carry case from jumper fantastic and the radio fits in it as long as you turn that knob around there radio fits in it beautifully zip it up perfect, and i thought oh hey. I could use this for the jumper. Oh sorry for the radio master, but but the radio master won't fit in there because the damn handle doesn't fold. So man it's um, as i say, it's all pluses and minuses, there's, no there's, no um, no perfect radio you've got to take the compromises that go with each of these radios. So those are the external things. Also. If we look along the bottom here, there's nothing on the bottom of the jumper we've got connectivity at the top. Through this little thing here, we've got a usbc and a trainer plug or headphones. I don't know what is that trailer headphones. I don't know i'd have to look at the manual um it's not marked there's.
No. I mentioned that before there's no marking on there, so um there's something in the bay here, no that's it it's pretty it's, pretty lean pickings for interfaces that's it that's. All you get, however, if you look at the bottom of the jumper. Well, first of all, you've got the same little thing up here: usbc and this one's even labeled. It says ds dsc. So what is that for? I assume that then, is for the jumper. For the trainer lead, i don't know dsc, so it's labeled, but it doesn't make any sense to me anyway, but underneath they've got another little cover here, you can peel off look and in here oh come on hurry up there's another usb jack. There is your sd card, which is actually can be accessed without taking the battery cover off and a couple of connectors here which look like they are uarts, so the beauty of that is with these couple of uh, you can add extra functionality to this radio with An external unit and plug it in there, for example, you could even add the adsb alarm that i'm working on you could have a uart out from there or you could you could build it into this radio. Just whack a gps on here write some scripts and in theory in theory, if you had a usb um connection to you to our adsb receiver and gps, you could have your own all integrated into your transmitter or something velcro on the back um adsb alarm.
To tell you when aircraft were coming woohoo, you can't do that easily, with a jump it doesn't have that connectivity, there's, no uart ports it's all. You know so again points for the radio master, so i'm feeling kind of in love with radio master. Not so in love with jumper, but that's sort of some of the objective things that some of the external things let's get inside let's rip the back off these things see how well they made i'm expecting. I haven't had the back off yet so you'll be learning with me, but i'm expecting. These are going to be pretty similar, there's not going to be a lot of difference because they are all derived from this basic unit here and no one's going to have reinvented the wheel by completely redesigning a circuit board or changing parts to a great degree. So am i expecting, apart from the rf module, because this is the jumper – this has the 900 megahertz module in there, and this apparently is a 900 megahertz antenna and that's another just while i remember because i'll forget. Otherwise. This is a 2.4 gigahertz antenna on the radio master, and this is a 900 megahertz antenna on here. So how do you transmit 2.4 gigahertz, which is most of your transmission through this radio it's got a little pcb antenna inside for the 2.4 gig transmitter which is is is acceptable if you're not flying too far or flying a lot of proximity behind trees.
But you are going to have a penalty in terms of range with a built in antenna and i think there's only one of them we'll find out when we tear it apart, so you're going to suffer a range penalty on 2.4. So if you're going to fly most of your stuff on 2.4 and you're like pushing the limits, this is not a good radio for that. This would be a better radio, because the external antenna is more efficient and you can also orient it to suit the antenna on your model because remember, cross polarizing antennas really does reduce your range. So if you're holding your radio like this, the internal antenna, i think, is pretty much going to be horizontal and if you turn around horizontal antennas do not have good um. If we look at this, horizontal antennas do not have much strength coming out the side. So if you happen to be standing here – and you fly your model way down there, that way you can fly at a range because there's a big null point off there and a big null point off there, whereas, if you're flying with this, you can put that Out there, if you're, using a 2.4 gig antenna on one of these rubber lucky ones, if you put your antenna right there, then you can fly as far as you want to the sides without getting in the knob, but you can't fly off the end it's.
Just a you know: it's just a factor. Most people won't be too much of an issue because most people don't fly that far away. Certainly, if you're a line of sight flyer not going to be an issue, i doubt you would ever run out of range with this radio, even with its built in 2.4 gig transmitter. But if you're doing any fpv might be worth thinking about. Okay, let's get into the jumper first thing you always do is disconnect the battery always do that because in case you're stuff up you're not going to blow something up and i've actually got a couple of these are lg cells. I think why am i using such expensive high capacity cells in or high current cells in one of these radios? I don't know um. If we look in here there's the sd card for the jumper it's not accessible from the outside you've, got to take your battery catch off and get in there. So there's your micro sd card there's, your input, there's, no other us, no other connections in there. So, as i say, that's pretty plain jane now these rubber rubber covers will have to come off. I don't know i've never done this on this one they should just here we go look see they just pull off, don't, be afraid children. You can rip it apart. So there we go and that should give us access to some screws. Indeed, there are some screws looks like they're.
There i'll get the screwdriver i'm not going to waste your time as you watch me, unscrew things and we'll do a jump cut okay, so there we're, indeed six screws they're all the same size, so you don't have to worry too much, but do make sure that You uh put them somewhere safely. I think we might do. We have to undo the top as well. We might have to undo these allen key screws, i'm, not sure, but we'll try, levering open from the bottom. Here we go. We'Re learning together, oh hold on we've got some side covers. Do they have to come off? I don't know not very clear. I think they do. I think they might have to come off um. No, perhaps not i don't know. Perhaps i should have watched someone else's video on this. Then i wouldn't have had to fart around myself jump cut. Okay. Here we are girls and boys. We'Ve got the back off. Let'S uh let's have a bit of a browse around and see what we've got here. Um main circuit board arm processor i'll, look more closely at that. In a moment the oh, this is pretty crappy, oh, my god seriously um. This is a pre production, but hang on i'll, just pull in here. You want to see this here is the flat flex. Cable that goes from the circuit board to the screen. Look look what a disaster! This is um, it's kind of all kinked up.
No, you should this is why flat flex cables break if you get them bent and kink like that, they can no that's terrible muriel. I know this is a pre production from what i gather one of the early productions, but seriously if you're sending something out to a reviewer make sure it's um not mangled. Please come on it's, i don't know um, but yeah as i jump and just seem to have a habit of just throwing stuff out the door. I mean all the reviewer samples have been flawed. Just about everyone. I'Ve got has been flawed because something wasn't done properly. That'S not that's, not a confidence inspiring thing that's yeah anyway, but i can set that aside – maybe i'm just unlucky, reviewers curse, we don't know so. Let'S have a look around in here. Um, probably the thing most people want to know about that 2.4 gig antenna here. It is way up here wherever i can get into shot. I must move the camera a little here. There we go there's the two point: four gig antenna um. What does it say on the air gain again? Yeah don't be oop. Sorry again, don't believe that it's just a circuit board antenna focus camera. It is a pcb antenna and that they, you know they're used generally for short range stuff, not for long range stuff, because remember the the wavelength um that we're looking at for 2.4 gigahertz. I forget what it is: um no i'd have to i'd have to wick it out, but anyway, 100 mils or something i know – i'm, just 90 80 mils um.
This is way short of a you know the decent size. When you compare that to a 2.4 gig sleeve dipole, this is a pretty short piece of kit and, generally speaking, antennas rule of thumb, not always true, but mostly speaking, the more metal you have in the game. The more your antenna is going to work better, so that's why 5 8 length antenna gives more gain than a quarter wave antenna and that's. Why antennas with lots of metal like helicals, give more gain than a plane enter just a single dipole antenna so yeah? This will work for line of sight, but don't go expecting to get long range fbv on 2.4, with this setup here not going to be you're not going to be a happy camper. If you do right, so one of the key things that we're looking at here thing that makes the jumper stand out from the radio master at the moment, although least the ones i've got, is we have the uh five five? What the jp5 in one, which is the multi protocol, rf module, so this does 900 megahertz. It does 2.4 gig gigahertz and the one of the downsides on 900 megahertz. I think it's only 300 milliwatts, so it's, not it's, not gon na. You know melt your toast it's not going to cook your eggs for you. If you want to go a long way, you can go a long way on 300 milliwatts, but if you're a real fanatical long, ranger you'll still use a module in the back, which would make this kind of redundant let's take a look at the pots.
What are the pots like? Okay, we've got resistive pots that look like fairly good quality, resist pots on there, nothing to complain about it's, fairly standard fear. I mean nothing, jumps out and says to me this is brilliant, or this is bad. We should have some bearings in the pot somewhere. Let'S have a look yeah. I can see a couple of bearings down there but hard to get them on the camera but looks like they may be quad bearing pots. Can'T really tell, and one of the things that everyone wants to see gone of course was those flat fixes. The white flak flicks cables, which caused issues now they've, got these little uh, just regular wire, bundled wire, connectors to standard board mount connections there so that's all pretty good. The only flat flex in the whole. Damn thing is this: mangled one down here: we've got a little uh primary battery here, a little lithium cell battery to keep the clock and other stuff current um yeah. Well i mean not much else up here. We'Ve got the switches. The switches are on door boards, which is always a good look, so we don't – where are we? If i get them in shot? Yeah switches are on daughter boards with little plug ins, so you don't have to have heat, shrink and stuff over the switch connections. I'Ve got no problems with that that's all fine, these little um pots. Here i can't i don't um.
No, i can't see any kind of detent mechanism on them, so that's, probably why you can't feel one it's just like there is something vague there, but it's really not. I don't know what i don't know what it is, but yeah and certainly not effective, not an effective detent, much else to see no, not much else to see very little else to see this thing with modern radios they get most of the price. Most of the work is done by that great big fat arm processor. There look at the size of that damn thing that's, where most of the work is done. I can't see that on the camera there, but i'll have a look and i'll put a note um. As to what version of armor, it is, but it's probably going to be the same as in the original jumper and yeah that's, just where everything happens. It'S interesting this. This whole trend away from separate ics towards a large um micro controller chip. Like that, so we started with the turnigy or the flysky 9x. They used a an amd process, 8 bit process and they did everything on the chip, which is more or less what happens in the modern radios. Everything'S done on this chip, there's no separate analog to digital converters, usually or any of that sort of stuff. It'S all done on the chip, and it makes it really really cheap that's why these radios don't cost much because you know it's, the software is free, it's, open tx and to pay for the software.
I mean it's open source, so all i have to do is make a bit of electronics wire it all together. Stick in a plastic case, bingo there's, your transmitter that's why they can sell these things for such a amazingly low price with functions and features that just a few years ago, would have cost you thousands of dollars in a futaba or jr radio, yeah, it's, amazing and We'Re all benefiting from that fantastic right, so that's that one yeah or other thing down here is the haptic vibrating motor it's fairly standard for little thing, a little eccentric right there. So when your transmitter buzzes and shakes there's, just this little off centered weight, spinning around on the motor same sort of things in phones, it's, quite a common, quite a common setup right. So i i say nothing spins my wheels. Nothing makes me too worried and so let's take the back off the radio master and compare once again let's get the battery out of the equation. I don't know if i've got cells in this one i don't have any no. I don't got any cells in this. So that's, okay, but i'll, take that out anyway. Here we go oh, and this has got writing in it. Warning, oh because remember another benefit of the radio master. It has a built in charger through the usb port, with the jumper. You have to charge batteries in a separate charging. You know if you don't have one that's a bit of a pain in the backside.
Actually because, obviously you want to balance charge them, so you can't, even just sort of like put that on your charge. There'S no balance lead so yeah. This is a more uh sophisticated way of doing it now, just worth noting is that they did actually put charging in the jumper pro, but it didn't work properly. So they obviously thought we can't work out how charges work so we'll leave that out of the new jumper, but radiomaster have built it in so let's see we should have the same process here as i had before. These. Actually, these hand grips are much harder to get out because they are much bigger and fatter so i'm going to do another jump cut here. Something i just noticed is actually the fit of the case is that flash on the radio master let's take a closer look at that i haven't taken any screws at you, but look at the gap in there. You can actually see the switch see that's. You see. The body of the switch of the camera will focus and the lighting was right, you could see, and that gap is all the way around over this side too. So you can see the switch and see there's there's quite a gap there. I guess that could be for cooling that's what that's? What i'd say if i found a made a mistake: yeah that's, just a cooling slot, that's, fine, but um, yeah, interesting and, of course, the oops.
Let me just pull out a bit here. The side covers come off like as they do, and the thing i know i've got to get these off is a bit harder to get off. Hang on a minute. I just i'll just find something sharp and if you're into bling here's something worth noting. Look, the radio master uses a silver screw and the jumper uses a black screw and the silver screw is a bit bigger, actually so they're, obviously using completely different mouldings for the casing, but trivia time. You know you might get asked that one day and then you'll know and because i've done this sort of thing many times before i didn't try and prise those off. I thought let's just try it. There may not be screws under there. In fact there aren't. So you don't have to take those covers off, which is good, because it'd be a bit of a job i think to get at the oh look, and this is another oh, this is great because there is no transmitter antenna built into the back. This whole cover comes off. There'S no leads that's when you're doing something on the bench it's, so nice, if you don't, have to deal with the transmitted back that is attached by a lead that you can break and pull off if um ian from um what's this. I can't remember mad rc anyway, he would have pulled the leader from broken it, because he's good at that don't take offense in um right.
So let's have a look in here. In fact, let's do a side by side because i think that's probably going to be the easiest way and just to show you see this is the the lead. I can't take the back right off that, because it's got that crappy little 2.4 gig antenna. Maybe we will do a mod on that and i'll i'll do that as a project. So here we go sidebar, so i don't know if i've seen this on the youtube. Yet anyone putting these two things totally side by side but i'm doing it. For you doing it for you here right, what have we got now? The boards are, they are different. They have, they probably won't, have changed the electronics, but the layout is slightly different, um in fact, yeah it's, quite a bit of difference to be totally honest. I'M surprised, sticks, i'm, surprised at how different the two boards are. So this is going to be interesting, let's see if we can pick holes in them and find out which one is the best. Now i expect they're using exactly the same processor, but i can't read them here with the lighting and camera angles and as it is, but uh you'll go we've still got a little coin cell um. This has a separate uh what's it's a win bond. So what is that i'll have to check it out? It'S, probably maybe a memory chip, but i don't think there's got enough memory in them, i'd like to see what the wind bond chip is, and i will maybe i'll do a full follow up on the boards.
Later on once i have a chance to evaluate them, but let's just do a quick browse. First, now, there's no mangled ribbon cable in this one bonus points. Thank goodness for that um. There is a ribbon cable. This is the ribbon cable here, which goes up to the display, so they've got the display coming up the top and it's a much nicer setup. The ribbon cable is well out of the way it's, not mangly mangly, so bonus points to radiomaster from that. The cable management isn't really any better or worse. Actually, i don't know these are flapping about in the breeze a bit and it's a very flexible cable um up here, they've got daughter boards oops. Sorry, let me let me go to macro, so i can tell you what i'm talking about in more detail. I just like the jumper they've got pcbs on the switches but they're a much smaller pcb and the wire sort of goes. Where is the wire i don't know? I can't see yeah anyway, oops sorry out of shot, so they get. Yeah they've got pc boards on the switches, but i i might even give the cable management to jumper. To be totally honest, i mean this is nothing wrong with this, but i've got a little zip tie on here to keep things together, but uh yeah, i don't know i may be a draw, but yeah i'd be leaning towards jumpers cable management. Actually, maybe because i had so much trouble the last time with those flat flicks now yeah and that that little there's a much better detent you can, you can see how that you watch i'll push it it'll click it clicks into the center position, that's, brilliant yeah.
Now that that is a much better detent, i don't know how they're doing that i'm, not going to pull it apart and find out, but it's it's um it's a different, slightly different pot unit. I think that they've used a slightly different pot unit too, maybe that's where, where the secret comes from now the stickiness are a lot different. I mean let's do a side by side on the stickiness. There is the let me mark this macro only does one setting there is the radio master. There is the jumper huge difference. The radio master is quite a bit simpler. These are hall, effects, sticks so there's, not a lot in the hall effect. Stick you don't need pots and stuff um everything's a bit lighter a bit smaller. The tension adjusts for the throttle is just a simple strap, which is a much longer strap than on the on the jumper um yeah. This is really not a lot. I mean they're. Both looking at inside i've got very few complaints with either of these radios. The design of the circuit board looks okay, we'll just go back down to a component level and just see whether they're, what the what the board soldering is like the quality of assembly. I suspect they're going to be identical, but you never know now. I have noticed some differences they're very interesting, some differences going on here and it's the choice of capacitors choice of capacitors. Now this has uh.
This is the jumper sorry, this is the radiomaster. Has this big tantalum capacitor here these capacitors can be problematic. Tantalums have not got the best reputation in the industry; sometimes they just explode. Sometimes smoke comes out unexpectedly, it's a bit interesting. Actually, but one thing i've noticed one thing: i've noticed is some and we've got the power circuitry here. Let me just show you if i get it into shot. Yeah here's a couple of inductors here: we've got the switch mode regulators for all the voltages used inside. This is basically it's, in other words, it's a beck to give you different voltages from the battery supply, which is needed to drive the all the electronics on board. But if we look at this there's, not a lot of capacitors, not a lot of high value. Capacitors like tantalums are used because you can get a lot of capacitance in a small package. So we look around there's there's, not a lot of capacitors on this board. Actually, there's there's very few caps on that board. We'Ve got some ceramic capacitors over here, but ceramics aren't known for their high capacity. They don't produce as much micro farads per cubic centimeter as tantalum. If we go across to the jumper one thing, i noticed the media look at all the capacitors in here. I'Ll just try and get this lined up a bit hard, but these round things for those who don't know what capacitors look like these round things here: they're capacitors these are.
These are um polymer capacitors, those look like electrolytic capacitors, but they have a solid d electric. So these are pretty reliable, pretty good there's. No real issues with these they've got a lot of them, though one two three four big ones there, and no more and yeah. So i don't know why there's a massive difference in the power supplies. As i say, i will probably do a more in depth. Look at the circuitry on these transmitters. I wasn't expecting it to be quite so different, so that's a bit of an eye, and i think it deserves another video just looking more closely at the choices that have been made, but it is still a 50 50. in terms of the electronics they both are. Quite acceptable, i don't see any deal breakers there um yeah cool. I like it, but let's take a look at something that i know everyone else is going to be asking on the jumper. Are we able to replace this fairly compromised circuit board antenna with a proper? A proper antenna, sleeve dipole, which is commonly what we use on these radio transmitters. And if we look down here, yes, we can there's a micro ufl here, uf ufl connector there, which goes off to that antenna. So you can just pull this off here. You can drill a hole in the case whack a sma connector on put on your favorite 2.4 gigahertz, sleeve dipole, and you get much better results.
It'S going to look pretty body, though it's got pretty dodgy. In fact, it's. You know having two antennas poking out the top um. I think, and also the other thing is that the 900 megahertz antenna on the. Let me just put things back, so we can get a bit of view of stuff here, hang on jump cut right, so i've, given you this rubber ducky antenna here and this this must be what we call a loaded antenna if it's 900 megahertz. It must be loaded because it's not long enough to be a good 900 megahertz antenna here is, let me just show you here is a sleeve dipole, 900 megahertz antenna. So what we have here is here is the active piece, and this is a tube that runs down the outside, which is a counter poise to the main radiator. So it becomes a it. Has a nice isotropic radiation pattern so that's how much you need for 900 megahertz you've got less than that in this antenna, it's not long enough to be 900 megahertz and there's. No counterpoise there's, probably wound there'll be coiled in there. I should rip it apart. It'Ll be coiled up in there and, as i say, it's really a case of how much metal you've got in the game. This has got a lot more metal in the game than that, so at 900 megahertz this antenna, i don't, think it's going to be very efficient, very effective, which is a shame because you're already limited to 300 milliwatts on this radio.
If you want to do long range fpv with 900 megahertz, i wouldn't buy the built in system, i would buy an external module, i get a crossfire module. This does r9 but r9 it's such a dog's breakfast of a system. I'Ve got r9 gear here and i can't get it all to talk to each other, some sometimes it'll talk. I can't find a cons, consistent version of the software that will enable all my receivers and stuff to work. So i just i've given up on r9 it's, just a you know: free sky shot yourself in the foot with that one and crossfire just works so damn well. Crossfire is extremely good. So i wouldn't even bother with the r9 side of things i just based off crossfire modules. Stick in the back, then you can run high power levels you you can put in another transmitter. If you decide to go to another transmitter, you save yourself money on buying the original simple, as so get yourself a radio master and whack a crossfire module in the back that's. What i would do, if you want to do long range fpv on 900 megahertz, don't fart around with a makeshift solution like this it's, not very good, and the other thing is: it boils down to intellectual properties. Well, i don't know if jumper or radiomaster is licensed crossfire technology off tbs, i mean tbs developed it. They put the time and money into it. They produced it um if they have done that and you buy a radio master or or a jumper, with crossfire support.
On a multi protocol module, are they paying the royalty to uh to tbs? Now, in the case of you, know normally i'm, not too much off clone receivers. For you know: free sky yeah, you know, that's that's life fresco makes its money out of selling um its transmitters and other things. But in the case of tbs they're kind of a you know, they're kind of a small company by most standards and trap is a met. Trap he's a nice guy i'd like to see people supporting the genuine product rather than then going the clone way with this company, at least, because trappy puts a lot of effort into the hobby and it's his passion he's, not just a corporate suit. In an office box somewhere he's a guy that flies fbv, he loves the hobby. So we need to support people like that. I know that's going to make me unpopular because trappy has a few enemies out there, but hey um. I would buy a crossfire module and put it in using without paying extra on this for the crossfire compatible. Unless there's been a licensing deal done, i don't know. Maybe i should find out why yeah i'll find out see if i can find out if i can't find out, then i don't know maybe trappy if you're watching this video chime in have they paid you money for crossfire. I don't know there you go so yeah that's. Basically it let's summarize this see what we found so welcome to the end of the video and the summary so i'd have to say yeah the radio master gets.
My choice gets my pick now. If you bought either of these radios you'd be pretty happy, i mean they're, both really functional radios. They both deliver so much bang for the buck compared to just a few years ago that you're not gon na if you've brought one of these don't feel that you should go and slit your wrists, because this is still a good radio. Still a great radio it's. Just that this one's a little bit better, in my opinion, just to summarize why i like this a bit more well, this one has hall effect sticks. These sticks feel nicer than this one. They did send me haul effect. I haven't put them in so that's, probably not a fair thing. I like the extra buttons for page up page down, that's, really nice. I like the fact that this is a a professional feeling thumb where it just has much nicer feel to it. It really does feel like a quality product compared to that, i like the fact that this has all the more expandability along the bottom you've got options. You'Ve got choices on this. I like the fact that this has a bigger battery compartment, so i could use a lipo in there instead of just 18 650 cells. If i chose to i like the fact that this has um what was going to say a forgotten, oh no, something else. What is it? Oh, it has battery charger. Of course, i can charge my lithium ion batteries through the usb c port built in charger that's just to make life so much simpler, even if the damn thing goes flat at the field, just plug it into the the car's usb connector and the way we go Charge it up enough for a few flights.
This you have to take yourselves out, stick them in a separate battery compartment and i think the really the deciding factor, the thing that the final thing is the film's already coming off on this one, and i never take the film off this one will never come Off so but that's it folks yep, both good radios um. If you want to go the long range way, i still think i still honestly think that you're going to have more flexibility, more choice, more options by buying something like this without the five in one module. Without the 900 megahertz and just stick in a crossfire or if you want to go, freeze guy, an r9 or m9 module in the back there, it just gives you more options gives you more options. What i would do is buy a foldy handle because i really like the foldy handle and it's um. I just have a look and see would that foldy handle fit on there. Maybe i should just change them over. Have they changed the dimensions at all of the mounting points, and i think they might have that's a bit of a bit of a hassle where's. My ruler i'm going to measure this because i would love to put a foldy handle on the radiomaster let's, just see whether they would actually fit now the spacings on the jumper. Have they deliberately designed it? So you can't that is from outside to outside. It is 11 almost yeah, it's, 11.
3 millimeters let's get that right. Now, 11.5 mils 11.5 mils let's see what it is on this one. Is this a deal? Breaker 10.5 millimeters yeah no it's not going to work folks it's not going to work just this handle from there. So i i i beg radio master. Please come out with a foldy handle a foldy handle because we would love a foldy hand, but then i can use it in my pack much more easily than that. This, no sorry don't, like it don't like it at all. So there you go it's. As i say, it's a game of pluses and minuses and nothing's perfect, but there you go. I hope you've learned something from this. I hope this has given you the information you need to make an informed purchasing decision. There will be follow up videos because i do want to look more closely at what they've done with those circuit boards changes they may have made and which one technically speaking, may be superior to the other but they're damn so so. Damn close to this stage, it's. Never cool from the from the internal side of things it might even give some of it to the jumper with the better cable management i don't know, but that's it folks. Thank you for watching. Thank you to my patreon support. You make it all possible for me to spend the time to do these things and to give you the information that you like, and i will now get on with other stuff it's a fine day.
Hopefully i'll get some flight videos done. You never know. Your luck. Thanks for watching guys by the way questions do the comment a bit. I don't know if i said that, but do that anyway and spot you later no mid rolls bye.