literally just got my crossfire rssi wokring, im like whys it so low? This video comes on autoplay and i hear your voice in the other room talking about my exact issue. What a hero

Damn! No LQ on DJI yet. I just got crossfire and was looking forward to 99% RSSI forever.

2:18 shoutout to the bug flying in the background.

What am amazing WSU to describe RSSI vs LQ. Never heard a more apt description than the concert and quiet room. Nailed it

I'm soooo glad you made a video about this. I literally just got crossfire yesterday and I thought I had done something wrong somehow! This is a huge relief!

So confusing as I am still getting used to Crossfire... but I think you helped simplify it for me and I know what to watch for now. Thanks JB.

Everytime I'm having a question about FPV theres a video from you answering it. So great, thanks so much!

Every time I have a random issue with my quad, I do a Google search and invariably, Joshua Bardwell has already answered it. Thank God for you, Joshua Bardwell.

You always have the video and info I need. Thanks for being so thorough and informative. I’ve learned SO much from your content.

Searched the whole day for easy answers about the LQ, thank you for this video 😊😊

Thanks for this Joshua because it blew my mind 🤯 spent good few hours hunting that 99 Listen to that radio for low RF alarm , turn round come back 👍🏻

I can't tell you what calculation Crossfire is doing when it outputs RSSI on an aux channel - you'll have to ask TBS about this. When Betaflight gets the RSSI directly from the CRSF link statistics frame it's supplied as dBm with a documented range of -130 to 0. Betaflight scales this range from 0 to 100% and that's the RSSI value presented.

im also glad you made this video, i started to get really confused about all the different rssi values, but since i had my first fail-save with crossfire after flying not more then half a km (although it was quite close to a cellphone antenna tower) after flashing the new firmware on it, im not convinced its actually the same reception as before (cuz i flew there before and never had any issues and also i was glad GPS rescue worked and the quad came back to me). about half a year ago i came to the conclusion that lq is more important then all the other values but i still left them in the osd just out of curiosity and when i did my record-distance-flight (5.34km as of now) the values stayed fairly consistent and in a range that id expect but then other times they seem to jump around randomly even if im much closer and also pretty much direct los, so .... also im starting to get very annoyed about the tango 2 telling me "sensor lost" ALL THE TIME and Ive wrote tbs about it and the only response was an explanation of what that meant (it loses signal with one or more telemetry sensors due to the fact that telemetry on the nano rx is only sent at very low tx powers) and the only solution to the problem i found so far is changing the wav file to an empty one, but that's not really a solution... even though crossfire is (in my humble opinion) far superior then anything else on the market, that's somewhat decently priced, im starting to get a bit pissed of by all the annoyances it caused me the last couple of months.

Those of us using DJI can't just ignore the weird RSSI behavior and use LQ. Only the selected RSSI channel, or default RSSI (when channel selection is disabled) goes into the MSP telemetry stream that DJI uses to display on the OSD I went the disabled RSSI channel route, and set the RSSI scaling factor in the cli to 125% which makes the new lower values seem a little more normal. FWIW, LQ is great at telling you if you're battling external RFI but at the true limit of range it may drop rather abruptly. I prefer the more gradual fall-off of Rf RSSI and find it more useful for detecting issues with Tx or Rx antennas or connectors (will see low RSSI from the moment of launch, rather than a sudden drop in LQ a few hundred feet out).

Thank you Joshua! I had to change channel on NANO from 8 to 12. I can't give up the other switches. I tried 12channels before and I don't remember seeing any latency issue. Again, thanks a lot! I can now see LQ via RSSI value. You're the man! 💪

I became a Patreon with this video! You see Joshua you are an expert adjunct to this hobby and we can’t live without you.

Thank you so much. I thought something was wrong with my crossfire. You're the best!

Wow I just went to crossfire and this really helped me alot cause im mostly using rssi right now.

People have been telling me R9 sucks because crossfire has 99% rssi forever and R9 drops off in a few hundred feet, and I'm an idiot for choosing R9. I understand the difference between LQ and RSSI, but the majority of CF fanbois I try to explain it to seem unable to admit that both system work the same, but CF shows link quality while r9 shows actual rssi. I will be posting many links to this video in the future. R9 still has it's issues, changing protocols being at the top of the list, but nice to see someone smarter than me finally explain the rssi/lq situation. Great video as always Josh, keep up the good work.

Good info on something that shouldn't be this confusing....thank you.

Thank heavens you addressed this. I was up til the sun rose!!! All night thinking it was a vtx table issue. Oddly enough when i load smart audio for tbs 2.0 it wont load. So i had to add channels manually..... Love ya brother hope the fams doing well

just was about to go to the field its 11.00 am in the morning , but this very important video drops. now lets learn this , will headover to the field next week .

Thank you for this video. My crossfire has always displayed like this. This has been big help👍👍👍

Thanks for all the tips, Joshua! 😊 Stay safe there with your family! 🖖😊

Btw I think they have to fix something with alert message. Sometimes I got a blinky ( for less than 1 sec) alarm message in the center for link quality, also if it never went to 1:***.

Thank mate! You finally answer to all the question I had about lq and rssi in Bf 4.2. I feel much safer flying my quad now 🙏🚀

Thank you so much I've been searching for this answer for months now. I finally understand. Thank you

Just getting into crossfire & this video will help me out. It seems all confusing but hopefully I'll figure it all out. Excellent review Joshua!!

Joshua, I think you need to upload the latest default font for 4.2 and that "(" will change to "LQ"

Just another random thing I needed help with. Thanks per usual Joshua.

I hate how the new way because in the corner of my eye I cannot tell when I go from 50hz to 150hz. Normally the number would vary down from 300 to 200, but now it always looks the same.

Great explanation of a tricky subject Mr B...🤔🤔🤔😀🇬🇧🇬🇧🇬🇧

Let us know when you get that fly 8:44

I believe that the link stats frame that feeds the telemetry values from the RX gets RSSI directly from sx1272. The difference could be the due to the difference in power output between the rx and tx. Anecdotally, I think it's fair to assume that the RSSI from transmit mode on the RX device on the quad would be lower, as it transmits at 40mw at all times. The transmitter module, which has much higher output value and likely a stronger RSSI for further distances because of its increased power output. Depending on how the telemetry frames are being scheduled/transmitted around within the blackbox of the crossfire firmware, it could be that the TX module is displaying the RSSI signal, as received from the RX and vice versa.

Think it was pre 4.2 that Crossfire has a component of RSSI LQ on the UART output so you dont need the channel output RSSI. It wasnt even 4.2 that did this but like 4.0 or 4.1. Seems like the RSSI value was lower sooner like you noted in this video. I am now using all 3 values for RSSI values up together. But the 4.2 changes screwing with LQ makes me want to just stick to 4.1

Thanks for posting this. I always wondered what LQ was good to go

Thank you! I was thinking there was something seriously wrong with my Crossfire upgrade having come from FrSky XM+ RSSI% values.

Thank you for all the effort you put in helping people!

It’s been a year since I played with RSSI on my first Taranis, just can’t believe how quickly things have changed. With my second Taranis I’m running crsfshot on iNav and for literally the whole day I was struggling with two RSSI links under the receiver tab. I still used the old way to setup so RSSI didn’t even work. Now I’m going to disable RSSI on iNav to see what happens.

Thank you JB! One new thing is that since BF4.1 with FRSKY receivers, I now have link quality warnings. Everywhere on the internet (awful

That's why my RSSI % on R-XSR and XM failsafe at like 40 to 45 . And my R9 failsafe under 12 RSSI . I always have to fly out and find average failsafe value. Makes a lot of walking with R9.. damn R9 took 300 meters with trees inbetween. I used LQ just give heads up before failsafe. If drops at all getting ready to failsafe. Goes quick. Doesn't really work. Now I got crossfire in the mail

Great video, although it doesn’t really address the people who are using DJI.

Could you do a simlar video for TBS tracer?

2:100 LQ forever!!!!!!!

Late here again but wow you're awesome. Glad you're still doing this after all this time.

Super well-explained, JB. Thanks so much for this video!

Someone batch processed their end of video call to action, great job :D

You forgot to tell us to change the BF Font to have a nice LQ Icon instead of that ugly "(" 😅😘 And I was sooo hoping you tell us the best way to have LQ in the DJI FPV Goggles' OSD 😭 For now I had to go back to the old Aux Channel method to display some sort of LQ Percentage in the DJI OSD. Best regards from France

thank you mr bardwell

My first 3 years of FPV I used TBS stacks with the TBS OSD and I found that I rarely look even at the LQ as the power output was my safety blanket .Most of the time I am on 10mw and I am set to 500 dynamic so if it shoots up to 500mw then I pay attention to the numbers but that is not a regular occurance as it rarely passes 25 . The thing that confuses me is I swapped a couple of my stacks and have them on Betaflight 4.2 and with only the stack changed I now hit 1:70 very frequently whereas in the same area with the TBS OSD it never went below 296% . Its like it reads the telemetry different but it unsettles me so I went back to the good old 99 on a couple of them and still have 2 quads on TBS stacks . I did just buy a Unify Evo and am loving that it gives me the 300% scale and my power output but maybe its just because its what I am used to . I wish Betaflight were able to implement output power in the OSD but I wont tell you what the reply I got was in the betaflight group . Nice video .Its good to have this for people to see

The expression you were looking for is "inverse square law", Joshua? 🤔 I don't know if it's the case, but since it is for the amount of light you get for a certain distance from the Sun, let's say... It would make sense.

My crossfire has been like this since I started using it, on every quad I ever put it in.

thank you so much for this I was so made to get 45 RSSI on my crossfire not even a 1/4 mile

I never understood the purpose of the combined "RSSI/LQ" mode, it's just a broken and meaningless number - Just pick one or the other. (And I fully agree with your conclusion, just use LQ and ignore RSSI - It doesn't add anything over LQ.)

Today. Today is the day I become a patron.

Aww you made this for me! 😂🤣 Thank you!

Well, I don’t have crossfire, but a FRSky XM+ receiver with the same problem. RSSI seems like half of the value it used to be. I flew 100 meters and it showed 1 RSSI and kept going for another 100m without failsafe. So I think there is a weird bug with BF 4.2 with the RSSI scaling. Not only for crossfire. I changed the RSSI scaling in the CLI so it kind of matches what it used to be. But if someone has a better solution for this, let me know!

@Joshua Bardwell From 0 to 300%, it would be more convenient to monitor and monitor

Wow man I've been wondering about that rssi and lq lower values...I did already know about those two lq numbers but my rssi shows up as half as soon as I take off..has me really spooked I'm. Like 100 meters away and 40 rssi what gives. Thanks for this one.

Enhorabuena por tu canal es muy bueno! Oye como subo la potencia rssi ? Yo ahora la tengo entre 50 y 60 😢 y se me va la telemetria al pilotar a 10 mtrs

I am getting problem with "sensor lost" message. It does not depend on the distance or obstacles from the quad. I am thinking that this message appears when CF is switching from 50 Hz mode to 150 Hz mode. Unfortunately tbs official support completely lacks competence. It is like talking about crossfire with the lady from my fruit market :(

Thank you for exsisting Joshua

Absolute so funny that you uploaded this video....I literally did this like 2 weeks ago, wasn't sure what made me do it.

Can you use both the crossfire RSSI and the analog RSSI on an aux channel? Want to see in the goggles and the other I like to use as a warmer/colder device to find my drone by having the value played over the speaker

Hey Josh I don't think there is anything wrong with the RSSI value. You had the quad behind you on a table but not sure where your TX is. In dynamic power mode, your TX is most likely at 10mw, so if your quad is behind you and your transmitter is on your desk with you and the antenna is pointed in the opposite direction, you will most likely get a low RSSI percentage value. This was the case with me. When I set the power to 500mw it went right to 99. Also, antenna signal polarization plays a big factor. If your quad antenna is laying horizontal(which it most likely is on a 5" freestyle) and your TX antenna is vertical, you will lose some RSSI. You'll see the difference when you twist your radio to match the same antenna orientation then back to being perpendicular to one another.

Hey Joshua, love your content has helped me alot. Have a question. Ive followed steps and ive done it several times. But i dont get LQ on OSD but it does show on OSD beta flight screen... what can i do to get this value on my goggles screen?? Thankss

8:44 that thing on 12S ? :O

Hmmm. Mine was 99% until recently. Now it's like 38% to 59%. Maybe a damaged antenna? I didn't make any betaflight or radio changes. It just started reading low and now I'm afraid to go more than 100 feet away because it gets down to the 30% area.

Just wanna say thank you Joshua...THANK YOU!

This video helped so much, thanks Josh.👍

We really need LQ in INAV. Kind of ironic that you can’t do it, given that it’s used more for long range flying. If I’m wrong, someone please correct me, but I wasn’t able to figure out how to do it.

Just got a crossfire micro tx starter kit. Got everything set up, mounted etc...watched all your videos and cant figure out my issue. When I first plug in my quad, i'll have 2/100 and 50ish rssi. After a few seconds of just sitting there, it goes to 1/100 with 30-35 rssi. Tried a different rx, higher power, different antenna, checked the region and freq...all appears to be correct. I have yet to fly with it this way because I feel I'll failsafe in less than 100 yards! I updated the tx, rx, and even struggled through an open tx update. Nothing has helped. I also took the module apart to make sure the ufl was still intact. Did I get a bad unit??? Little frustrated. Never had crossfire before and so far ive got a pretty bad first impression of it

Running nightly tbs build for crossfireshot. Get radio warnings for signal

make this type of video about Frsky R9M please

Hi ! Joshua i have a question for you , (Because your the best at it ) i ´ m a big fan of the crossfire system because of it reliability and Link quality but my question is, i want to fly my mfd crosswind 1950 mm ( big plane) with a eagle tree vector flight controller in sbus so it means i will need at least 4-5 outputs for 3 caméras( vidéo switcher ) plus a feyutech 3 d gimbal and navigation lights so , what would be the best crossfire receiver with enough outputs for long range fright the diversity one or others . NThanks joshua

Frickin great video Joshua! Helped out a lot!

I’m still happily flying my Betaflight 3.5.7 lol. I got no intentions of updating

If only DJI would add LQ to the OSD :( at least i have a warning in my x lite

Maybe you can help me.I finished my first build! Squirt V2.1 and I can’t see the lq, warning and artificial horizon onto DJI OSD. I can see the rssi, model name, and battery voltage. I am using a crossfire nano, and bf 4.1.2..Thanks. And you are awesome!

This video is so fucking timely..Thank you..If you look at my FB you will see this was driving me crazy. Finally today gave up and switched all my quads to just LQ in OSD cause I coudln't stand seeing RSSI being so off from the normal 99 and I didn't understand it. LOL Also is why the RSSI value is different. It's in the release notes..the way that the 'RSSI dBm' value is tracked in the firmware has changed to use actual dBM value in a range of -130 to 0, instead of the previous version's 130 to 0 range. This means that if a custom setting for osd_rssi_dbm_alarm is used, this will have to be changed to be the inversion of its previous value (e.g. 60 becomes -60) (#9550);

Thank you! I learned something today! and I dig the end of the video.

Cheers JB. Most helpful!!

did anyone alse saw a micro drone fly by Joshua head 😂😂😂😂 8:43 lol

Is there a way to correct the RSSI in the OSD?

Dji Googles has no LQ :(

hmm i have tried turning off the aux channel for rssi .. the LQ just flashes with zero's and dbm locked at 130 .. ??

I think the RSSI value may be different in Betaflight due to uncalibrated RSSI scaling in Betaflight. I needed to make sure these were right to get the RSSI in the OSD to be close to matching the RSSI values on the controller telemetry screen. I'm not sure how to do this exactly, it would be great if I could find a video tutorial on how to calibrate the RSSI scaling values, but I got my values from a Facebook group, which told me to change things via setting RSSI scaling/offset values in the Betaflight CLI. Perhaps someone could look into finding a way or someone/somewhere to learn how to calculate these? Another thing I wanted to ask about is if anyone can confirm if LQ still works on Betaflight even for those who are not using Crossfire? It appears to be on a scale going up to 9 when on the OSD, and I think it's a measure of the inputs recieved vs dropped or something? I haven't looked into it too much, but flying in my neighborhood on 2.4GHz, I have noticed that although mostly on 9 (this is with 80+ RSSI values), it still drops to 8 or 7 from time to time, possibly due to interference from house wifi routers. So it must be measuring something, but I'm not sure how much to trust it.

The dBm explanation is a little bit off. dBm or dBmW is decibel-milliwatts The decibel (dB) scale is logarithmic and infinite in both directions, the dbm variety has a reference point of 1 milliwatt. So 0dBm = 1 milliwatt As you go negative you are getting closer to 0 milliwatts but you will only ever get infinitely *close*, never truly zero. 30 dBm = 1000 mW 20 dBm = 100 mW 10 dBm = 10 mW 0 dBm = 1 mW -10 dBm = 0.1 mW -20 dBm = 0.01 mW -30 dBm = 0.001mW and so on, forever in both directions. There are different decibel scales with different reference points for different applications, dBuV or dB SPL for example. They work pretty much the same way just with different units. google/wiki will tell you more about it.

i have discoverd that when useing a clearview 1.2 if you do not enable rssi,,,the clearview video rssi indicator will not function

Hi. i have just purchased the crossfire nano, think it is the same as micro v2, so do not have to put rssi on an aux channel, but i cannot set the lq option in my dji goggles even though selected on the osd, so rssi value only or nothing, not keen on the the low rssi values everyone seems to be getting with the newer crossfire modules. i had to re adjust the scale for my r9 in the cli to match osd rssi, but that was easy as the telemetry scale was easy to match by looking at the rssi reading on the telemetry screen on the radio, but on crossfire this just reads 99 all the time and does not move. for any suggestions welcome. thanks.

ive just go crossfire and was worried when i did have rssi. well im not any more. im switching to LQ

Thanks jb! Very educational

guessing this applies to ExpressLRS as well since it works on the CSRF protocol

So there's something I guess I don't understand. Because of the asymmetrical Tx power of the Crossfire TX Micro (up to 1w) and the nano Rx (I believe only 10mw) it seems to me that you will lose telemetry long before your LQ falls to RFMD 1 and 70% LQ and in fact I've been trying to test this and that's what I find. I was simply trying to see of my audible warnings in my radio were working but those logical switches never get tripped before I lose telemetry. I guess using the telemetry in your OpenTX radio isn't very useful for that reason.

That was a great way to explain RSSI and LQ

Hey Joshua, thank you for the video got most of my questions answered, but am getting into TBS with tracer as my 1st XF system, and the LQ on OSD shows 1:100 when quad on desk, is that because tracer has a constant latency mode ?

But you can have good LQ just after taking off even if your antenna is broken. 10 seconds later you fall out of the sky with an LQ below your waistline and into the your neighbor's never ever cleaned, monitor infested swimming pool. I always check the dBm before taking off...

Im sure you've mentioned this in your videos before but maybe you could make a video explaining why the motor throttle up without props on. I've seen at least 5 post in 2 days of people asking what's wrong with their quad. They panic and there's nothing wrong

My LQ jumps from 2:99 to 1:100?

Very nice explanation, but I'm still a bit unsure about what you said at about 12:02. Okay, so I've fell down from mode 2 to mode 1. Will LQ then show me 1:X where X is the number in percent which you said should be above about 70? Excuse me for the ill informed question, but I just got my Tango 2, and I haven't really installed my RX yet (just connected it) - and I've never used Crossfire before. Is the X number the "total link qual" across all three modes, or can I expect to have a full range from 0-100 in each mode? As in, what will X be, at the time I drop from 2 to 1 and 1 to 0? Thanks, dude.