EZUHF JR Transmitter Module vs Regular EZUHF TX from ImmersionRC

Just a quick look at the EZUHF Jr transmitter module and how it compares to the regular one.
8-1-2016 Update:
I did recently got an RF meter and tested the outputs. The can has a little more power than the module. The can is about 600mw while the JR module is about 400mw. The can of course is better for mounting on a pole and you may rig a repeater using a rx for your brew of radio to avoid being tethered to the pole.
The EZUHF JR module has the advantage of being able to plug into the bay of some FrSky Taranis radios but has a little less power than the EZUHF external box(can).
EZUHF JR Module
www.immersionrc...
EZUHF JR Style Trainer Cord TX Adapter
www.readymader...
EZUHF Updating Firmware on TX and RX plus Binding:
• EZUHF Updating Firmwar...
EZUHF Manual
www.immersionr...

[@RakishRc]

would you recommend buying this now? i want to use for my rc car radio which has a ppm output port.

[@AlbertoNoys]

4:40 300 kilometers?!

[@DaveMerc]

Alberto Noys Yeah, that was a slip up. I should have said 3 to 10 kilometers to be realistic.

[@AlbertoNoys]

***** No problem. As another comenter said, as someone who is used to the metric system, it was funny to hear that, that's all. ;) Maybe you should put an annotation or something.

[@Koestel-FPV]

Thank you for this info, there is a difference in range between these two models? Have you made any distance tests?

[@DaveMerc]

Koestel I have not done any range testing but in my normal flying out to a mile or so they seem to work the same on low power.

[@Koestel-FPV]

***** Thank you

[@raffman4266]

Great video tutorial sir!

[@sergiofolli133]

what about range of each modul?

[@jimmcminnsr6309]

This EzUHF is perfect for me. I don't want to fly 2-7 miles away, can't see that far. Just a little more than 1/2 mile with the Tanaris X9DP. I bought the EzUHF 8-channel Diversity Receiver ( the one with two antennas). My question is the positioning of the antennas? I'm thinking vertical or somewhere in between but not horizontal. Maybe one up the other down? What's your input?

[@DaveMerc]

You must have the diversity receiver. I only have one antenna. You could put them in a V configuration.

[@jimmcminnsr6309]

Yes Sir I do have the Diversity Receiver but with two antenna. Here is the link so you can take a look, I hope I copied correctly. Sir I thank you for your reply. I love the way you explain things your pretty easy to follow. smile.amazon.com/gp/product/B01B699H0M/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1

[@desertdirtbiker]

Great video. A couple of questions... Why would use use low vs. High power? Also, will this work with the X9R receiver? I saw something about updating the firmware. Is that a requirement with the X9R? Thanks again!

[@DaveMerc]

Newport Bill Low power saves battery power and reduces interference with other RF equipment. The EZUHF TX module is a long range RC control system that is proprietary thus will only work with EZUHF receivers. It's similar to DragonLink or Open LRS,

[@trilltrall]

Great thorough video as allways! Question: I have a storm OSD with return to home. Does the ezuhf failsafe bind the return to home-switch on my radio?

[@DaveMerc]

Yes as long as the OSD RTL switch is on channel 1-8 because is within bounds of +/-100. Just put the switch in RTL position and then press the button on the EZUHF Transmitter for two seconds and it will remember the switch setting.

[@trilltrall]

ok, thank you!

[@SONICBOOM-117]

Will this work on a flysky fsi6x?

[@DaveMerc]

Not sure, I have never tried the fsi6x radio. It will work with the QX7S and the X9D or X9D+

[@brycedavey1252]

Hey, can someone tell me the range of the new and old one pless :) "but with the same set up"

[@kermets]

can the older tx be used with openlrsng firmware ?

[@HR41Plan]

Hello thanks for all video you take time to created. My question , after 0ne year you use this combination of new jr ezuhf and fr sky, are you happy with the stability and performance ? Thanks.

[@DaveMerc]

Yes, I am happy with the it. However I have not done any range testing so I don't know about the max distance or how it compares to other UHF systems. I like the way I can now get 12 channels with the Frsky Taranis with ppm mux using the 1.50 firmware. That is very nice.

[@HR41Plan]

ok thanks for information

[@dayxxman4079]

Is the black extrnal box better then white box

[@DaveMerc]

The EZUHF JR module (black) has the advantage of being able to plug into the bay of some FrSky Taranis radios but has a little less power than the EZUHF external box(white).

[@DerekDickerson]

***** The taranis does 32 channels will the EZUHF support that?

[@DaveMerc]

Derek Dickerson The EZUHF will do 12 channels in PPM mode.(with the single servo lead). I am using this with my Eagle Tree Vector FC.

[@chrisf5475]

+dmerc00 i've been pulling my hair out to find out of using a single cable can work and just found your comment, thanks!!! can you also get RSSI ?

[@joseconcepcion3796]

Need to buy 4 din to 3.5mm cable just like yours. I have dx9. Where did you get it or give website.

[@DaveMerc]

Here we go, found it! www.readymaderc.com/store/index.php?main_page=product_info&cPath=165_40&products_id=894

[@DaveMerc]

Just search for: EZUHF JR Style Trainer Cord TX Adapter

[@joseconcepcion3796]

Thanks so much ¡

[@antoineedw]

Hello, I'm trying to use a 3s lipo to power up my EZUHF but is it normal that the electronic card of the EZUHF heats quickly (a few seconds) ? And is it normal that the voltage of my lipo 3s is 12.5V please ?

[@DaveMerc]

Yes 3s LiPo will charge to 12.6V. EZUHF RX only needs 5V but the TX can use 12V - 13V. For the RX use a 5V regulator for best results.

[@antoineedw]

@@DaveMerc hello, i know that rx needs just 5v but my question was about the EZUHF TX 2W, and when i power it with a 3s lipo its Electronic card heats and in the manual of this transmitter it's written that it needs 9-12v so I just need to know if it's normal or no because, for now, I don't use it like that to not damage my TX ... So if you know that it would be perfect ... Thanks a lot for your first answer it's really nice ...

[@antoineedw]

@@DaveMerc And, if you know, I have another question : How to know if my remote works with the 2Watts option of my TX ? Because I know that it works with the 600mWatts option but I question me if it will work with this other and bigger power option or not ? I was looking for in the manual of my remote but I didn't find in ...

[@DaveMerc]

@@antoineedw idk

[@DaveMerc]

@@antoineedw Yes it's normal for them to get hot. If you had some way to match the antenna for lowest SWR it would be more efficient and get less hot. Two-way radio repair shops usually have the equipment to do it. ie SWR meter.

[@DannyCruzCreations]

Question. I'm starting to get into LRS. I understand how the EzUHF works and the frequencies it uses. But what about the FPV setup? I supposed you'd use a 1.3Ghz transmitter... But what transmitter to get range that would keep up with the EZUHF? You need a ground station and directly antenna, like a Yagi or something, right?

[@DaveMerc]

Danny Cruz Range is always a variable and I have not done any range checking myself.I use a 1.3G set on 1258mHz with 800mw of power. That will get you good strong signal that will go the distance. The draw back to 1.3G is that there are only 2 usable channels in the US, 1258 and 1280, and it requires a HAM license which I have already. I use a ground station with a patch antenna with a monopole on the plane and take out for miles. If you had a helical or a Yagi you could reach much further. I would suggest a diversity video receiver with a CP for close in and helical for distance, but that is just what I have heard works well.

[@DannyCruzCreations]

***** Hi, I have a HAM license. I acquired it a few months ago when I started flying 5.8ghz. I've only been flying multirotors on 5.8ghz with the standard IRC 600mW 5.8 VTX with Dominator V2s - Pretty much the standard setup for small multirotors. However, I've been more and more curious about LRS. The EZUHF seems simple enough. Getting a 1.3Ghz VTX is simple enough as well. The tricky bit is the ground station portion. I wonder if I should simply start off with a 1.3 module for my Dominator V2 goggles and put a 1.3 antenna straight on the goggles and do a range check to see how far I can go. Maybe that will keep me satisfied for a while. If range testing with that setup doesn't work at that great, I can sell the module and build the ground station. Over here there's a lot of open desert I could fly. There is also a lot of coastline that would allow me to fly, say a wing, along the coast for a long distance, while still keep line of sight for the signal.

[@DannyCruzCreations]

***** Thanks for the advice by the way. I took a screenshot so I won't forget it.

[@TheMAdBOlad267]

+Danny Cruz Make sure to use a notch filter on your Lrs transmitter antenna. Almost all Lrs systems are known to spit out tons of interference on bands other than the intended 433mhz, especially 1.3ghz. Also make sure to use notch filters and not high/low pass filters as they often reduce the range of your LRS without even cutting down on the interference itself.

[@myozone]

Is the module TX & RX - i.e. telemetery ?

[@DaveMerc]

No telemetry on the EZUHF that I am aware of. It does have a head tracking port however.

[@myozone]

***** Thanks, I guess I got confused with the Taranis 2.4Ghz default module with the X8R

[@DaveMerc]

myozone When I use the EZUHF LRS it's usually with FPV where I have OSD information so telemetry is not needed.

[@jeffsaunders8024]

I am trying to follow your EZ UHf setup from your TwinStar build, but the version of Immersion RC tools is 1.4.25 and It does not allow me to use any channel higher than 8 on my Receiver setup, so I can't assign the Rssi and Link quality, Anyway to work around this??

[@DaveMerc]

Did you set 12 channel mode in RC Tools?

[@jeffsaunders8024]

That pull down menu option is grayed out Im using Immersion rc tools ver 1.42.5 so the menus are a bit different

[@jimmeeGray]

Dave. Good work as usual. Question, does the ezuhf gear you use provide telemetry?

[@DaveMerc]

Good question. I have telemetry through the Ardupilot telemetry radios to my laptop but the ezuhf JR module does not have it.

[@jimmeeGray]

I gave up on apm. I have a hexacopter and the apm was a real pain. It's here in a box along with minimOSD, telemetry kit etc. I'm using dji naza now. I guess I'll continue as planned and get the iosd

[@DaveMerc]

Sounds good to me. Whatever works is best.

[@aldoyosbel1728397263]

So, how many bat do u have on the spectrum, 1 for the ezuhf and the internal bat for the spectrum. Am I right . Anyone helps please

[@DaveMerc]

With EzUHF on Spectrum you need an external battery to run the EZUHF transmitter.

[@aldoyosbel1728397263]

Thanks so much

[@newbtubetecher]

Do you need HAM Amateur to operate these radios legally, great videos by the way.

[@DaveMerc]

Good question. I believe the UHF 433 MHz control does require a HAM license, you would also need a HAM License for 1.2, 1.3, 2.4 and 5.8 GHz analog video. If you have a drone that uses WiFi control and WiFi video such as 5.8 or 2.4 then no HAM needed. en.wikipedia.org/wiki/Amateur_radio_frequency_allocations

[@newbtubetecher]

@@DaveMerc thank you, the only part of the regs that im concerned about is that it is a continuous signal; I will dig a little deeper in the regs then post what i find when i have a concrete answer. Thanks again!

[@DaveMerc]

Okay that would be interesting.

[@PushhprajShrinivasAmeenn]

what is max rang?

[@DaveMerc]

Pushparaj Ameen Not sure. But I have had the SkyWalker almost out of visual range with the JR Module on low power. FPV SkyWalker test flight with APM, Taranis TX, UZUHF and Airspeed Sensor

[@iRoNiiC_H3R0]

what does the high/ low switch do?

[@DaveMerc]

+Ironiic zero It's a controls the transmitter power. I usually fly in low power to save the battery on my radio of course reduce my broadcast footprint. It may also have something to do with installing firmware but no proof of this has been given.

[@iRoNiiC_H3R0]

thanks

[@lookingupforjesus]

Good explanation sir. I want to run the R/C controller away from the EZUHF tx, I have a 6 foot trainer cable that will allow me to stand (or sit in the van with a monitor) a bit away from the EZUHF. I considered the JR style module for my XP9303 that I'm using as the controller, but I had battery power considerations in powering both the R/C controller, and the EZUHF from the tx battery. I wired in a 3s 1300mAh pack into the XP9303, hoping it won't burn up =/. It powers up, and I left it on for a while to see if it would let the smoke out. So far, so good heh. I almost sold off all my EZUHF stuff until I saw your vid on setting up the utility program to actually work for both firmware updates, and programming the devices.... THANK YOU ! =).

[@DaveMerc]

***** You are very welcome! Glad you are getting some use out of the equipment.

[@tobz02]

You made a mistake at 4.46min. You said 300 km, wich at first made me think how the hell would this go for 300km, and then i heard the 2.7 miles, wich was much more realistic. From a guy that has always used the metric, it was funny. Anyways, 2.7 miles is like 4.4 km, so you can correct it in the video, and 300 km is like 186 miles wich you understand how bazzeld i was to think this little thing would go so far. Thank you for you review, they helped, i have a taranis, and might upgrade to the JR module. Really well explained !

[@DaveMerc]

Ha ha ha, that is so funny, my bad! I think I meant to say 3 km but even that is not right. Thanks for pointing that out. Not sure if I can fix that now.

[@chrisfunk2000]

***** I would hope that these can far exceed 3km, considering I have so far proven my DX6i and a cheap orange RX to work at 2.1km. I expect with the right conditions these should get you out to 10km at least.

[@Estuardo305]

Very Nice!

[@DaveMerc]

Thanks friend!

[@brunobl2007]

04:40 "...up to like 300 kilometers" ==> WHOA! ...If only that were remotely near the actual range, but no. ;-)

[@DaveMerc]

Bruno Lobo Ha ha, yeah I got a little tongue-tied on that!

[@brunobl2007]

+dmerc00 Great video, nicely done and informative. -Should have mentioned that in my first comment. Many thanks for posting.

[@captaintripps7354]

I prefer EzUHF over DL. I do not use the stock nor Diamond type gain antennas, those antennas are what we refer to as 'unbalanced' and can be prone to noise and interference as opposed to 'balanced' dipoles. I DIY and tune my dipoles and use them both on the Rx and Tx side. I used both the Junior module as well as the metal can version with equally good results. As with any LR system, a good Failsafe is a must to improve recovery in case something goes wrong. These are hobby grade radios and being that are not 100% perfect. The same goes for DL.

[@yvindandrehansen8461]

i have been 12 km out with about 30 % rssi with this modul. I have seen 16 km out with about 40-50 rssi

[@emil30driv]

hi Im looking to buy LRS to use around 10 km Do You recomend EzUHF JR module for that trips ?

[@saleemkhutaba7267]

i got one of this box EZUHF once i connect it after 3 mins i got Strong headcase !!

[@sulaimankhelwaty5929]

hi is there a module for the spectrum dx9 that fits like the taranis at the back ?

[@DaveMerc]

+Sulaiman Khelwaty Not sure what you mean. Are you looking for a module to plug into the Taranis radio? HobbyKing had them.

[@sulaimankhelwaty5929]

Hi No I have a Spektrum Dx9 and the Dx8 I would like to know if the the new version ezuhf Immersion transmitter in plastic red box fit my spektrum Dx9?

[@DaveMerc]

+Sulaiman Khelwaty I don't think it would but I don't have a Dx9 to try it. Does the Dx9 even have a module bay?

[@sulaimankhelwaty5929]

Hi thanks for your help i just checked and no it doesn't have the module. I think the old sliver one or the dragon link will suite my Dx9 but i don't know which one is the better product.

[@soft_nature5824]

You can go 3 miles with a 2.4 ghz system.

[@prime-eight]

typically a "this "VS" that" video has some sort of actual comparison concluded by factual evidence. I was very disappointed to find out it was not... this video is an opinion based on appearance.

[@DaveMerc]

Good point :-) After using these for several years (it's an old video) I have come to the conclusion that they are about the same other than the module has the ability to plug into my Taranis bay. I did recently get an RF meter and tested the outputs. The can has a little more power than the module. The can is about 600mw while the module is about 400mw. The can of course is better for mounting on a pole and you may rig a repeater using a rx for your brew of radio to avoid being tethered to the pole.

[@matthewbarnard461]

+dmerc00 good to know the information on output! Either one is good enough for me

[@MSM5500]

the biggest issue with a "can" version of a EzUHF transmitter is that it's not SBUS capable unlike JR style one which is. The thing is ImmersionRC refuses to release an SBUS firmware for the external module for some reason even though the unit could be connected right to the SBUS signal output pin on a RC the way the JR module can be. By the way the "can" module is sold with an appropriate cord. Strange company, strange products, strange business.

[@joeyrock69]

300 HUNDRED Kilometers??? That's 200 Miles!!! I don't think so

[@philthayer4087]

My module loses link every now and then. Sometimes only 300ft out. Dont trust it.

[@jackhammell1926]

The JR module has you standing like a statue the entire flight where as the EZUHF can be mounted on a tripod while you sit in a lawn chair while drinking a soda…just sayin

[@splatula]

junior...

[@TheMAdBOlad267]

+splatula JR is the brand of radio transmitters that created the port that this uhf plugs into. Hence the name EzUHF JR

[@splatula]

ImmersionRC is the company that makes both EzUHF and EzUHF JR brand names used to distinguish the different models. JR is generally regarded as the short for junior, and the JR model is an underpowered version of the full EzUHF transmitter. Back in the old days, in addition to walking 20 km through roaring snowstorms to get to school, firstborn sons were often given the same name as their father, but called junior or Jr to denote their position in the family. So yes, it is a brand name, but the module bay on the Taranis and other radios takes XJT, JR and other "style" modules.

[@rcnoob573]

What does the aux do?

[@RetiredTimeProductions]

It means 'Auxiliary Control' but all these years I have never used it or discovered what I can use it for. Manual says only "An ‘Aux Ctrl’ port is available to connect to a ‘control board’, for in-flight UAV configuration without sacrificing valuable control channels. "

[@rcnoob573]

Thank you! I am about to test my spektrum dx6i with the ezuhf and the eagle tree. It cost a lot of time but i will come that far like in your videos hopefuly. i have to watch it all over again and again.. :-)