I have been having issues with the Radiomaster RP4DT receiver. I am using a single antennae Tx. And I am having an issue where the RSSI dbm is still good enough but the signal to noise ratio is already to low and forces a fail save. Would you mind doing the comparison at 09:15 with NRSI also shown in the comparison screen? Would be awesome to have some reference for that. Oh and what refresh rate did you use? 50Hz?
I suggest checking the ELRS discord - I am sure they will be able to provide you with more information about your issue. I was using a refresh rate of 100Hz.
Thanks for this review Gal!! Quick question though please : at 18:20 on the way back, with LQ at 86, and rssidbm at -96, and full strength bind symbol on radio …. why is the Nomad still in failsafe?
I'm getting back into fpv. I was looking at this to get into elrs since i have a older Qx7 transmitter. Was also considering getting the pocket crush cc2500 version and the nomad so i have the option of both elrs and cc2500. But I'm not sure if that's how that works. What do you think?
I didn't think you could get the pocket crush in cc2500, you might be stuck with the OG pocket. But it does definitely work like that you could get the cc2500 and fly the stuff that supports it, throw the nomad in the back, and do all the crazy Gemini stuff. I'd go for the Boxer crush through, get those full size AG01 gimbals. Plus it comes with 1W internal 2.4GHz ELRS which is probably all you'll need. Then you can always throw the nomad in the back if you need that. Or a 4in1 if you end up needing that.
@rcvg69420 thanks. it says it's the m2 version and it's straight from radiomaster. I really like how the pocket fits in my hand. Left stick I have to use my thumb due to nerve damage and the boxer is too big for me. Figured most cc2500 drones I have aren't long range. Haven't stepped up to anything big yet.
One thing that worries me about stuff like Gemini and this new XrossBand system is the added software and hardware complexity. The performance is good as far as maintaining a solid 100% link quality for longer. But as we saw in your test, absolute range wasn't really even increased over 2.4 using the bandit module or the nomad. I think one gotcha with your test is the low altitude is going to affect the lower frequency more due to the larger fresnel zone which we seem to see clearly in your test. We also see 2.4 start taking LQ hits more quickly probably just from being in a place with so many houses that I assume have wifi, so larger noise floor on the 2.4GHz band. So I'm not sure if I'm sold on Gemini let alone Xrossband.... I even kind of think extra transmitters could be bad. Especially in an environment with lots of other users (like flitefest) where your TX system is effectively equivelent to turning on 2 TXs. Just adds to the noise in the area. Think of this scenario, lets say you have 100 pilots all trying to fly 2.4 at the same time. During one test, they all use Gemini transmission, during the other, they use normal. Which test will have lower LQs? I'd bet the Gemini Test since you effectively have 200 2.4 transmitters going instead of 100. Just food for thought here. I suppose the most valid use case is using 2.4 at a Race one day then getting to run 900MHz for bando bashing without having to swap modules.
Thanks for your detailed feedback. I agree that for more use cases you can stick with the "good old" 2.4Ghz ELRS system. Having more options though is great :-)
I don't think the plastic piece on the side of the case was meant for a screen. I believe they did that for the bluetooth and wifi signal to still be accessible. An all metal case would block all signals.
I wonder how the Nomad compares to the Ranger and Bandit if the receivers used are just regular (without diversity and gemini) 2.4 and 900 respectively. I believe it will not perform as well since the TX antennas are specifically made for one band and not dual band like the Nomad's, but it'll be interesting to know how small or big the difference in performance will be.
Debating on returning my full sized ranger module and getting this instead. Whats your take? Im leaning towards sending it back so that i can have thr option of thr nomand(my 2 quads are 2.4ghz) but i plan on getting a long range rig with 900
@@KremerFPV I do have a question for ya, I run 03 air units in both my drones, I notice in the goggles and in videos the film is sometimes super grainy, how do I fix that?
@@KremerFPV Right, exactly... and should be removed when putting on the heatsink to allow proper thermal transfer ^^ Maybe you did already, just pointing it out in case you didnt.
This is perfect technology for large RC airplanes, both gasoline and turbine-powered, where maximum redundancy and safety are needed. Create PWM receivers, and you will gain a new, large market.
@@KremerFPV With the dual protocol rm receivers for drones would work with the RC SBUS to PWM/PPM Decoder 16 Channel Converter Receiver Signal Transverter for Futaba Frsky Orange from amazon? This was tested and work fine with the normal 2.4 ghz elrs which was review by rc video review by john. But if I was to buy this module and the receiver with dual band for this nomad will i be using dual freq with this sbus to pwm decoder to use on planes?
Excellent video. Ordered mine today.
Thank you! Enjoy your new TX and happy flying!
I have been having issues with the Radiomaster RP4DT receiver. I am using a single antennae Tx. And I am having an issue where the RSSI dbm is still good enough but the signal to noise ratio is already to low and forces a fail save. Would you mind doing the comparison at 09:15 with NRSI also shown in the comparison screen? Would be awesome to have some reference for that. Oh and what refresh rate did you use? 50Hz?
I suggest checking the ELRS discord - I am sure they will be able to provide you with more information about your issue. I was using a refresh rate of 100Hz.
Thanks Gal...🍻
Sure thing 🍻
Appears everyone got these to try as there are so many videos about it on YT , just today
It was released today.
Fantastic testing and review, Gal! Thanks a bunch!!! 😃
Really impressive system!!!
Stay safe there with your family! 🖖😊
Thank you! You too!
Thanks for this review Gal!!
Quick question though please :
at 18:20 on the way back, with LQ at 86, and rssidbm at -96, and full strength bind symbol on radio ….
why is the Nomad still in failsafe?
Thanks you. At this point all the RXs were not in fail safe. The failsafe message can be ignored.
I'm getting back into fpv. I was looking at this to get into elrs since i have a older Qx7 transmitter. Was also considering getting the pocket crush cc2500 version and the nomad so i have the option of both elrs and cc2500. But I'm not sure if that's how that works. What do you think?
I didn't think you could get the pocket crush in cc2500, you might be stuck with the OG pocket. But it does definitely work like that you could get the cc2500 and fly the stuff that supports it, throw the nomad in the back, and do all the crazy Gemini stuff.
I'd go for the Boxer crush through, get those full size AG01 gimbals. Plus it comes with 1W internal 2.4GHz ELRS which is probably all you'll need. Then you can always throw the nomad in the back if you need that. Or a 4in1 if you end up needing that.
@rcvg69420 thanks. it says it's the m2 version and it's straight from radiomaster. I really like how the pocket fits in my hand. Left stick I have to use my thumb due to nerve damage and the boxer is too big for me. Figured most cc2500 drones I have aren't long range. Haven't stepped up to anything big yet.
One thing that worries me about stuff like Gemini and this new XrossBand system is the added software and hardware complexity. The performance is good as far as maintaining a solid 100% link quality for longer. But as we saw in your test, absolute range wasn't really even increased over 2.4 using the bandit module or the nomad. I think one gotcha with your test is the low altitude is going to affect the lower frequency more due to the larger fresnel zone which we seem to see clearly in your test. We also see 2.4 start taking LQ hits more quickly probably just from being in a place with so many houses that I assume have wifi, so larger noise floor on the 2.4GHz band.
So I'm not sure if I'm sold on Gemini let alone Xrossband.... I even kind of think extra transmitters could be bad. Especially in an environment with lots of other users (like flitefest) where your TX system is effectively equivelent to turning on 2 TXs. Just adds to the noise in the area. Think of this scenario, lets say you have 100 pilots all trying to fly 2.4 at the same time. During one test, they all use Gemini transmission, during the other, they use normal. Which test will have lower LQs? I'd bet the Gemini Test since you effectively have 200 2.4 transmitters going instead of 100.
Just food for thought here. I suppose the most valid use case is using 2.4 at a Race one day then getting to run 900MHz for bando bashing without having to swap modules.
Thanks for your detailed feedback. I agree that for more use cases you can stick with the "good old" 2.4Ghz ELRS system. Having more options though is great :-)
Great review ❤️
Thank you!
@@KremerFPV I had a doubt, that if we fly on 2.4ghz can we switch it to 915 MHz while flying?
@@aviationRCfly it takes some time to switch the protocol so you will hit failsafe for about a minute.
I don't think the plastic piece on the side of the case was meant for a screen.
I believe they did that for the bluetooth and wifi signal to still be accessible. An all metal case would block all signals.
Yes I need to check with RM.
I wonder how the Nomad compares to the Ranger and Bandit if the receivers used are just regular (without diversity and gemini) 2.4 and 900 respectively. I believe it will not perform as well since the TX antennas are specifically made for one band and not dual band like the Nomad's, but it'll be interesting to know how small or big the difference in performance will be.
That's a good question. I will think about putting it through a test.
Debating on returning my full sized ranger module and getting this instead. Whats your take? Im leaning towards sending it back so that i can have thr option of thr nomand(my 2 quads are 2.4ghz) but i plan on getting a long range rig with 900
What did you end up doing? It's a tough call :-)
@@KremerFPV kept both lol
@@cnw-jd9tt 😎
@@KremerFPV I do have a question for ya, I run 03 air units in both my drones, I notice in the goggles and in videos the film is sometimes super grainy, how do I fix that?
@@cnw-jd9tt did you change any settings? In my experience the default ones work pretty well. Do you fly in low light conditions?
@KremerFPV what do think are the best receiver antennas for this receiver?
Minimortal / Immortal T antennas. I only tested the stock ones though.
Okay thank you
Module SMA ports can be used for 2.4Ghz and 900Mhz interchangeably?
Yes, the TX is using dual band antennas.
Does this Mavlink support Arduplane telemetry?
It should.
👍
👍
Looks like there is covering sheet on the thermal pad you should remove.
It's a protective piece.
@@KremerFPV Right, exactly... and should be removed when putting on the heatsink to allow proper thermal transfer ^^ Maybe you did already, just pointing it out in case you didnt.
Why do they dont make it as nano module and simply use a nano to micro adapter?!?
To make it more compact I guess.
make this for big planes, for gassers where is we need the maximum security
💪
flash it as an RX, and put one in the plane
Is it hackable to 2w?
I didn't test it.
i wonder how it will perform with BAYCK 900MHz 2.4GHz 915M ELRS Dual Band Gemini Receiver
It should work with no issues as far as I know.
wow only 45$ 🤗
Yep it's a bargain.
That's what happens when the tech is open-source. We need to support open-source over closed source rubbish from DJI
the next gen transmision....
like it...then buy it .....
🤣
This is perfect technology for large RC airplanes, both gasoline and turbine-powered, where maximum redundancy and safety are needed. Create PWM receivers, and you will gain a new, large market.
@@JoeDaManTheHC do you?
Yes I'm sure these RXs will be released at some point.
@@KremerFPV With the dual protocol rm receivers for drones would work with the RC SBUS to PWM/PPM Decoder 16 Channel Converter Receiver Signal Transverter for Futaba Frsky Orange from amazon? This was tested and work fine with the normal 2.4 ghz elrs which was review by rc video review by john. But if I was to buy this module and the receiver with dual band for this nomad will i be using dual freq with this sbus to pwm decoder to use on planes?
@ I don't see any reason why it should not work. It's worth double checking it with RM though.