Great video jb. Lol i was laughing when u started smiling when u came back with their vtx to test it. You always have the best vids. You bring great info to the table and we all know its true info because you dont hold back
You should do a test on Unify’s while substituting u.fl to SMA cables and the power output variance they have. It really blew my mind how bad some aftermarket u.fl to SMA cables were!
glenby2u yes agreed, but I am not talking about adding connections, I am just replacing existing ufl to sma cable with another one. Ie: the TBS cable is really stiff and I have tried many different cables and none performed as well as the original that comes with a Unify. I have tried ones from Allied, Newark, Mouser, eBay, The Tramp 3 pack, FuriousFPV..... some use lose over 200mW’s
Been doing the same thing my self as soon as i got the new RF Power Meter, it is not a coincident that Tony asked you to check 25mw, most frequencies are close enough to the advertised output power. Try to test 600mw , there you would have seen some interesting results, for exmaple on E8 (5945) you will get only ~470mw output. the answer i got from Immersion was to embarrassing to post here, I wounder what will be their answer to you.
Haybeseret FPV Interesting. What channel/s had the highest output on the 600mw setting? Perhaps I'll rephrase that, um, so what's your favourite channel, ahem...
I have not tested all 48 channels, but i can see from sporadic tests that channels in the mid range of the 5.8ghz band are getting higher output numbers.
But also to be fair, most people who do run say 600mw aren't flying with a bunch of other people lol doesn't the unify put out over 800mw when its highest power is selected?
yes, it is known that every vtx performs differently on different channels and different power levels. Not sure what you are faulting... the test device? It is also known that the higher up the spectrum, the less the power output. This is all VTX's. Or are you saying a Tramp only puts 470mW on 600mW at the high-end of the spectrum? All of this focus on power levels is to keep them low for group environments. (25mW...) The readings as the power increases all scale differently on the spectrum. I'd post the answer, I'm sure it's not embarrassing. It's Science.
I will be getting one of these! :) Plus, Tony Cake has put a face, for me, on Immersionrc! So, I am even more likely to ensure I have immersionrc kit in my quad! Thanks Joshua, Thanks Tony. Keep up the good work guys.
Nice little meter. Josh looked like a kid in a candy store for this one.. I would have too.. :) It's a little expensive for me right now...but it's something I'll work on getting down the line a bit because it's an excellent tool.
We need more product reviews were they have the actual manufacturer watch the testing of their product lol, but damn it Josh! I have the "measurement bug" also, so I will have to add this pretty little toy to my electronics arsenal. Keep the A+ content coming!
French Brown I agree, Preston Garrison from Raceflight done a video measuring cheap transmitters and they were all over the place but would love to see more extensive tests and compare them to high end vtxs
I tested one using an antenna-to-antenna method last weekend. at "25mW" I was reading 200mW-level, at "200mW" I was reading 700mW level, at "600mW" my meter showed over a Watt. Not the most accurate measurement as it scales.... but it was WWWWWAAAAYYYY hotter than anything out there.
TNR Wand rocks. And I strongly suspect when the Rapidfire launches it will rock even more - pretty sure you're gonna be able to program your goggle module with TNR too.
Nice video...that app is pretty awesome. I used to use Tramps and they were good vtxs. My issues were breaking off connectors! The ability to use the app with quad powered off is a great feature for racers and I didn't know about it!
Please test a lot of the popular inexpensive ones to show people that thinking bleed over onto other Pilots signals. A lot of newer Pilots think if they have clear video then everything is fine they don't realize that a good video transmitter means that other Pilots will have clear radio while you're flying.
I've done this testing with a good network analyzer - oddly it's pretty channel specific - even with TBS Unify and Tramp VTX options, certain channels have a lot more ACLR bleedover energy
You mentioned Agilent! I work for them. But we split the electronic measurement group off two years ago as Keysight Technologies. We make medical devices at Agilent now. Looking forward to seein data on the TBS Unify vtx's.
I know this is old news, but smart audio and tramp telemetry can be changed powered off, if we get clever with it. Using the command line and the speedy bee app on our phone we can change the vtx channel/ect on our Fc overriding the box on first power up. :O granted we aren't using a 5v vtx on a rail that's powered when we plug in usb. I've don't this on a number of fc's with a otg cable powering the fc from my phone. I assume an app like pid vtx would also work. If you can reach out to speedybee a vtx changer would be a sweet tab to include. Anyways I wasn't sure if you knew or if it interests you. But everyone forgets to change channels on race day or wants to change without powering up and it's a sweet way to do it.
Hey Joshua, we actually just had a race with Scully this weekend and he discovered that the Akk vtx is outputting way more power than it should be. A few of the local pilots also checked their own Akk vtx with a spectrum analyzer and it was the same result. Can you include this faulty vtx in your testing? People need to be aware of the problem before it causes more havoc in other racing events.
Love my Tramp VTX unlike the TBS units fried pro they don't burn out. Only problem I ever had with them was the connectors would break off. But I stopped that with a bit of epoxy poured down between the connectors and the metal RF Shield. Got a box of at least 15 burn out uni frys. Won't buy another one unless they can put some overheat protection like the tramps have. Tramps won't even burn out if you power them without an antenna try that with a unifry...
Hi Joshua, Do you think it's possible to use this to also test antennas by attaching them to the meter, or do you think it's calibrated to work with the included pigtail? Also THANKS for this video! I have already used this to diagnose a DOA antenna. Previously thought it was the VTX :)
Leider null verstanden. Will das aber haben. Nur woher? Braucht man das Zubehör überhaupt? V2 soll ich besser kaufen das habe ich verstanden. Und anscheinend gibt es ein Zubehör ( woher ? )! NFC Mode ist dann möglich. 😢 Geht das nicht einfacher? Liebe Grüße und bleibt gesund. Will doch nur die RF Leistung und die Frequenz wissen. Für eine einfache kurze Antwort wäre ich so dankbar.guesse aus Deutschland.
I love all my tramps got 3 of them. Still working for over a year all them. Love this app. Downloaded it now to try out today. I had the NFC chip on my Chameleon for two years not Knowing I could use this app. By the way can we make tramp mmcx?
looks nice i want one but the only thing i think that would be nice is the ability to scan all channels to see whats all being used or has alot of interference
@joshua bardwell I can't find the video where you test the rush tank VTX output power. Is this video a dream or can you point me in the right direction? Please and thank you! Have a great weekend!
I have ten Unify quads and just bought the Mach 2 because of MMCX and want to know how it compares. This video also made me order the V2 to use for the "comparison".
Volleyoghurt it shouldn’t drift that much. If we were using 5GHz and not 5.8MHz then I could see that being a bigger issue. In fact the only thing that would change the power level is if you replaced or altered a component inside the transmitter.
@JoshuaBardwell The extremely painstaking testing to do with this is figuring out ACLR (think of it as channel bleedover) for each VTX onto neighboring channels... PatmosFPV (with a bit of my help) has done a lot of this, and the results are somewhat surprising in that the common RF module has specifc channels where the bandpass filtering just doesn't cut it and it'll bleed over up to 40MHz. Same thing, channels like E4 and E8 actually have bleedover spikes into the middle of the 5.8GHz band. It's possible to back-validate these findings with an RF meter, but a true spectrum analyzer is still going to be the more powerful tool for doing that.
We happen to have a spectrum analyzer ($3k flavor), and now have the data tables, so I'll hit you up over Facebook. Let me know if you want to see them before or after you do your testing. I have an excuse to devote a lot of resources to RF instrumentation of drones, so this is absolutely something I'm able to help out with.
No, it hasn't. This is a new product that ImmersionRC has just released. The v1 power meter did not have some of these features, and did not have a built-in calibrated load resistor.
Yes, lots of great features on the new one! No argument there, I have them both now. My v1 gets borrowed 10-12 times a week for testing by my flying club buds, almost two years old.
Could you make a video on how to use the TrampCFG android app with the Tramp HV VTX? In the meantime perhaps put a simple write up somewhere. I can't get mine to work. TrampCFG says NFC enabled, but can't get a connection using a Samsung S7. There is a dearth of info on the web about this feature. Thanks.
Can we quickly compare different antennas this way? By transmitting from quad placed on a table and walking away, on 100 meters for example, with this device in hand, it's looks like we then can replace antennas on it and compare them very quickly. And even draw in few minutes reception diagram with all the dead spots, by rotating and tilting it and and writing down the values on the template graph . ?
You can't really do this in any environment where reflections will occur, which is pretty much everywhere. If you go to like... an open field with no buildings or structures for 1000 feet maybe you can do something like this. You can get a rough idea of how much power the antenna is putting out, but unless you have a protected environment like an anechoic chamber, measuring the antenna pattern in a very detailed way isn't really possible.
it's an interesting question how much energy have reflected signal - unlikely so much to completely ruin the reception pattern on a graph. And i am not talking about precise metrological-anechoic-chamber-grade measurements and graphs - but difference in antennas performance, dead spots because of tilt and rotations, how much the directional antennas is really directional and does they work at all - all of this might be very obvious and immediately visible this way - it will be an awesome experiment (and a nice idea for a video ; )
Is it normal that the power level falls when connected to the meter on the bench? I'm guessing heat is involved. When I plug into the meter (Dragonfly Vtx 200mW on F7) I get a 300 mW reading, 200 after 1 min, 145 after 2 min, 120 after 3 min, 110 after 4 min. For my Hawkeye 200mW I get 290 initially, 185 after 1 min, 145 after 2 min, 130 after 3 min. Neither Vtx is new, but not abused. I can slow down the power drop by blowing air on the Vtx, but not sure where it would stop. Do I need to junk these (the Hawkeye is still getting OK video, the Dragonfly not so much)?
Yes it's normal that some vTX reduce power as they heat up. They are designed to be used on a quad in flight, not on a bench, so airflow is required. Put a fan blowing on them and you should see the output power is pretty consistent.
is is a general spectrum monitor? could you use it to check which frequencies are in use in the area? it would be handy if you turn up to a group so you can find an unused band/channel
Can this be used to locate a lost craft? Can you install a directional antenna that will help you locate a signal based on the strength and direction? Can it read the transmission for RSSI from your r-xsr at 2.4ghz? I just want options next time I go down in tall grass.
Quick question......why does my DYS F4 PRO V2 connect to beta and cleanflight.....before it would say it was not something blah blah blah for this configurator but now I can configure the flight controller in both
i want to ask you Joshua Bardwell and ImmersionRC, why dont we have FPV signals that can be bound from VTX to RX googles just like our 2.4ghz radios? this feels like then the old 35 band was in use for radios :)
Where do I find the immersionrc tramp app for Android? My jaw dropped because I had no idea you change settings with your phone. Tony is right, the button sucks. Thanks for best knowledge on fpv
Cool device! But, can it be used easily to detect a VTx that's spamming all over the spectrum? It's helpful to be able to confirm someone's outputting 25mw on their channel, but there's a whole other cause of problems when they're also bleeding all over other channels.
Yeah, you're right. I guess I was just highlighting that this device, while helpful, isn't going to be a silver bullet for solving all video issue disputes on race day. I just feel obliged to mention this as somebody who runs a lot of race days and deals with a lot of pilots causing issues with spammy VTxs that are still only outputting 25mw, nominally, on their assigned channel. They're expensive, but our club's RF Explorer is really invaluable for these sorts of issues.
I've only done this with Smart Audio. If you go to the betaflight cli and type get vtx, you'll see a bunch of things including vtx frequency and power and a few other things. I believe smart audio simply changes these settings from osd, but changing them when plugged into a computer then powering on applies the changes and the smart audio sets the vtx.
It will detect energy of any sort in the supported frequency ranges. But I'm not sure that it has a simple band-scanner function. It's a power meter, not a band scanner.
*walks down starting line* "alright good, this one's good, this one's good, this one...*20dB* *Horrified gasp!*" *puts scanner away and slowly pulls out hammer* " You Have Violated The Sacred Race Law!! You Will Be Destroyed!!" *Smashed quad with hammer as gasps and distraught murmurs emanate from the crowd. Somewhere a baby is crying*
iPhones that are 6 and newer all have nfc. I don’t know much about coding so maybe Apple doesn’t let you use it. But I know the iPhone 6 and newer all have the technology
Updated how-to with this power meter: ruclips.net/video/H6CCSBcAQlg/видео.html
Great video jb. Lol i was laughing when u started smiling when u came back with their vtx to test it. You always have the best vids. You bring great info to the table and we all know its true info because you dont hold back
You should do a test on Unify’s while substituting u.fl to SMA cables and the power output variance they have.
It really blew my mind how bad some aftermarket u.fl to SMA cables were!
Now I am curious. Damn
Third this motion
remember that each connection incurs loss.some will have worse connections but all will lose a bit.
glenby2u yes agreed, but I am not talking about adding connections, I am just replacing existing ufl to sma cable with another one.
Ie: the TBS cable is really stiff and I have tried many different cables and none performed as well as the original that comes with a Unify. I have tried ones from Allied, Newark, Mouser, eBay, The Tramp 3 pack, FuriousFPV..... some use lose over 200mW’s
That's why I direct solder
This is fantastic.
I don't "need" one, but damn I want one. I can roughly check antenna quality this way, maybe even for my hand built ones.
Nice demo! Thanks for taking your time to create this informative and concise video!
Im waiting on mine for 20 days already! So excited about it, such a great product!
Tony is right the button sucks on the Tramp. The wand is totally worth the investment. I love how easy it makes things
being a newb im appreciating immersion more and more
This is so exciting! I already have mine on the way! Can't wait to play with it!
Just downloaded the RC Tramp NFC app. Can’t wait to try it out this weekend.
Cheers
Great measurement tool. Love mine. Thanks Mr. Bardwell
Very cool. Thanks for putting up this video Joshua. Can’t wait to get one!
does it come with a hammer?
Been doing the same thing my self as soon as i got the new RF Power Meter, it is not a coincident that Tony asked you to check 25mw, most frequencies are close enough to the advertised output power.
Try to test 600mw , there you would have seen some interesting results, for exmaple on E8 (5945) you will get only ~470mw output. the answer i got from Immersion was to embarrassing to post here, I wounder what will be their answer to you.
Haybeseret FPV Interesting. What channel/s had the highest output on the 600mw setting? Perhaps I'll rephrase that, um, so what's your favourite channel, ahem...
I have not tested all 48 channels, but i can see from sporadic tests that channels in the mid range of the 5.8ghz band are getting higher output numbers.
But also to be fair, most people who do run say 600mw aren't flying with a bunch of other people lol doesn't the unify put out over 800mw when its highest power is selected?
yes, it is known that every vtx performs differently on different channels and different power levels.
Not sure what you are faulting... the test device?
It is also known that the higher up the spectrum, the less the power output. This is all VTX's.
Or are you saying a Tramp only puts 470mW on 600mW at the high-end of the spectrum?
All of this focus on power levels is to keep them low for group environments. (25mW...)
The readings as the power increases all scale differently on the spectrum.
I'd post the answer, I'm sure it's not embarrassing. It's Science.
Pretty sure that's just how all consumer video transmitters work....
Cool lil gadget!..thanks so much for the awesome info JB.
I will be getting one of these! :) Plus, Tony Cake has put a face, for me, on Immersionrc! So, I am even more likely to ensure I have immersionrc kit in my quad! Thanks Joshua, Thanks Tony. Keep up the good work guys.
Tony is such a cool guy, we're lucky to have him developing for the hobby
Step off George!
Nice little meter. Josh looked like a kid in a candy store for this one.. I would have too.. :) It's a little expensive for me right now...but it's something I'll work on getting down the line a bit because it's an excellent tool.
We need more product reviews were they have the actual manufacturer watch the testing of their product lol, but damn it Josh! I have the "measurement bug" also, so I will have to add this pretty little toy to my electronics arsenal. Keep the A+ content coming!
The testing never stops. Great tool.
I’m a calibration technician and have always wanted to test some of the gear we use on some of our standards.
Thanks, JB. I’d love to see some AKK VTX included in the tests. They seem to run really high.
French Brown I agree, Preston Garrison from Raceflight done a video measuring cheap transmitters and they were all over the place but would love to see more extensive tests and compare them to high end vtxs
I tested one using an antenna-to-antenna method last weekend.
at "25mW" I was reading 200mW-level, at "200mW" I was reading 700mW level, at "600mW" my meter showed over a Watt.
Not the most accurate measurement as it scales.... but it was WWWWWAAAAYYYY hotter than anything out there.
Wow, that's all over the place! Didn't realise they would be out by that great an amount. Guess that's what you get with cheap Chinese garbage lol
Great for checking for broken antennas. I tend to trash the u.FL coax on the AXII antennas. This tells me for sure.
Thanks for this review and thanks for your very good products Mr Cake !!! Love the Tramps ! best VTX IMO.....
TNR Wand rocks. And I strongly suspect when the Rapidfire launches it will rock even more - pretty sure you're gonna be able to program your goggle module with TNR too.
Nice video...that app is pretty awesome. I used to use Tramps and they were good vtxs. My issues were breaking off connectors! The ability to use the app with quad powered off is a great feature for racers and I didn't know about it!
Very interesting. Thank you for the demo.
Please test a lot of the popular inexpensive ones to show people that thinking bleed over onto other Pilots signals. A lot of newer Pilots think if they have clear video then everything is fine they don't realize that a good video transmitter means that other Pilots will have clear radio while you're flying.
I've done this testing with a good network analyzer - oddly it's pretty channel specific - even with TBS Unify and Tramp VTX options, certain channels have a lot more ACLR bleedover energy
Very good video and good explanation about the tramp tag, I had no idea that it worked with vTx off.
Can someone give me a link where to buy a good one p!ease?
Finally it's there! the V1 is out of stock and EOL for a long time!
Whoa! So cool! Thanks Josh! need one stat!
I learned that this isn't 5.8 only! Totally worth the investment now.
"Link in the product description"? 😂 Great vid as always Josh! Thanks for sharing
I’m sold and a fan! Thanks!👍🏽🤙🏽😃
You mentioned Agilent! I work for them. But we split the electronic measurement group off two years ago as Keysight Technologies. We make medical devices at Agilent now.
Looking forward to seein data on the TBS Unify vtx's.
That's a really nice piece of technology! 😀
YESSSSSSSS!!!!!!!! I was looking forward to this review!!!!!
you just made my HP scope and sekan portable thanks.
The next tool you need to review is the N1201SA vector impedance analyzer.
I know this is old news, but smart audio and tramp telemetry can be changed powered off, if we get clever with it. Using the command line and the speedy bee app on our phone we can change the vtx channel/ect on our Fc overriding the box on first power up. :O granted we aren't using a 5v vtx on a rail that's powered when we plug in usb. I've don't this on a number of fc's with a otg cable powering the fc from my phone. I assume an app like pid vtx would also work. If you can reach out to speedybee a vtx changer would be a sweet tab to include. Anyways I wasn't sure if you knew or if it interests you. But everyone forgets to change channels on race day or wants to change without powering up and it's a sweet way to do it.
Hey Joshua, we actually just had a race with Scully this weekend and he discovered that the Akk vtx is outputting way more power than it should be. A few of the local pilots also checked their own Akk vtx with a spectrum analyzer and it was the same result. Can you include this faulty vtx in your testing? People need to be aware of the problem before it causes more havoc in other racing events.
I do have one and intend to test it :-)
Another great video, fantastic !!
That NFC module antenna sounds super useful. I am still configuring my tramp using the push button interface and it is not the best.
Thanks! Got one on order
Nice product..... Endless applications...
Love my Tramp VTX unlike the TBS units fried pro they don't burn out. Only problem I ever had with them was the connectors would break off. But I stopped that with a bit of epoxy poured down between the connectors and the metal RF Shield. Got a box of at least 15 burn out uni frys. Won't buy another one unless they can put some overheat protection like the tramps have. Tramps won't even burn out if you power them without an antenna try that with a unifry...
Hi Joshua, Do you think it's possible to use this to also test antennas by attaching them to the meter, or do you think it's calibrated to work with the included pigtail? Also THANKS for this video! I have already used this to diagnose a DOA antenna. Previously thought it was the VTX :)
Finaly we see the big advantage of the Tramp with it's NFC ...
This was great...
Leider null verstanden. Will das aber haben. Nur woher? Braucht man das Zubehör überhaupt? V2 soll ich besser kaufen das habe ich verstanden. Und anscheinend gibt es ein Zubehör ( woher ? )! NFC Mode ist dann möglich. 😢 Geht das nicht einfacher? Liebe Grüße und bleibt gesund. Will doch nur die RF Leistung und die Frequenz wissen. Für eine einfache kurze Antwort wäre ich so dankbar.guesse aus Deutschland.
"..this is gen 1. And what was wrong with gen 1?"
"nothing"
"come on"
I love all my tramps got 3 of them. Still working for over a year all them. Love this app. Downloaded it now to try out today. I had the NFC chip on my Chameleon for two years not Knowing I could use this app. By the way can we make tramp mmcx?
looks nice i want one but the only thing i think that would be nice is the ability to scan all channels to see whats all being used or has alot of interference
@joshua bardwell I can't find the video where you test the rush tank VTX output power. Is this video a dream or can you point me in the right direction? Please and thank you! Have a great weekend!
I have mine already 👌😁
Drone nerds starting to touch PWM world of digital RF signals :D
I really liked it
I really want to see the rdq mach 1 and mach 2 tested to see how they stack up to the tramp and the unify. ;)
I have ten Unify quads and just bought the Mach 2 because of MMCX and want to know how it compares. This video also made me order the V2 to use for the "comparison".
How long its gonna take that the calibration exceed the maximum offset? And can they recalibrate it after a year or two?
Volleyoghurt it shouldn’t drift that much. If we were using 5GHz and not 5.8MHz then I could see that being a bigger issue. In fact the only thing that would change the power level is if you replaced or altered a component inside the transmitter.
Is Tony hiring? That spectrum analyzer is amazing and that is the kind of innovation that I want to work on
Best ask him :-)
Usefull tool, when are these going to be available again? Are there any alternatives? Been searching for months
They actually just announced they would be doing a new batch soon.
@@JoshuaBardwell that's great news. Thanks
Hey Josh, do you have a ham license? What class are you?
Tonyyyyy!! Need one ☝️ good vid
@JoshuaBardwell The extremely painstaking testing to do with this is figuring out ACLR (think of it as channel bleedover) for each VTX onto neighboring channels... PatmosFPV (with a bit of my help) has done a lot of this, and the results are somewhat surprising in that the common RF module has specifc channels where the bandpass filtering just doesn't cut it and it'll bleed over up to 40MHz. Same thing, channels like E4 and E8 actually have bleedover spikes into the middle of the 5.8GHz band. It's possible to back-validate these findings with an RF meter, but a true spectrum analyzer is still going to be the more powerful tool for doing that.
Yeah, you really need a spectrum analyzer for this.
We happen to have a spectrum analyzer ($3k flavor), and now have the data tables, so I'll hit you up over Facebook. Let me know if you want to see them before or after you do your testing.
I have an excuse to devote a lot of resources to RF instrumentation of drones, so this is absolutely something I'm able to help out with.
Tell Tony to make us a smaller Tramp, with a shorter lead to the sensor for the wand.
Glad everyone’s catching on, this “kit” has been around for years:-)
No, it hasn't. This is a new product that ImmersionRC has just released. The v1 power meter did not have some of these features, and did not have a built-in calibrated load resistor.
Yes, lots of great features on the new one! No argument there, I have them both now. My v1 gets borrowed 10-12 times a week for testing by my flying club buds, almost two years old.
Could you make a video on how to use the TrampCFG android app with the Tramp HV VTX? In the meantime perhaps put a simple write up somewhere. I can't get mine to work. TrampCFG says NFC enabled, but can't get a connection using a Samsung S7. There is a dearth of info on the web about this feature. Thanks.
People will actually find out, that the TBS unify sucks too because the lack of shielding! 😃
Could you use this power meter to test the power output on a Ham radio to determine efficiency of different antennas?
Can we quickly compare different antennas this way? By transmitting from quad placed on a table and walking away, on 100 meters for example, with this device in hand, it's looks like we then can replace antennas on it and compare them very quickly. And even draw in few minutes reception diagram with all the dead spots, by rotating and tilting it and and writing down the values on the template graph
.
?
You can't really do this in any environment where reflections will occur, which is pretty much everywhere. If you go to like... an open field with no buildings or structures for 1000 feet maybe you can do something like this. You can get a rough idea of how much power the antenna is putting out, but unless you have a protected environment like an anechoic chamber, measuring the antenna pattern in a very detailed way isn't really possible.
it's an interesting question how much energy have reflected signal - unlikely so much to completely ruin the reception pattern on a graph. And i am not talking about precise metrological-anechoic-chamber-grade measurements and graphs - but difference in antennas performance, dead spots because of tilt and rotations, how much the directional antennas is really directional and does they work at all - all of this might be very obvious and immediately visible this way - it will be an awesome experiment (and a nice idea for a video ; )
Nice!! Good info
Hey dude. Whats your thoughts on the hoot antenna? Currently running a couple of them and they seem ok.
Love them.
Is it normal that the power level falls when connected to the meter on the bench? I'm guessing heat is involved. When I plug into the meter (Dragonfly Vtx 200mW on F7) I get a 300 mW reading, 200 after 1 min, 145 after 2 min, 120 after 3 min, 110 after 4 min. For my Hawkeye 200mW I get 290 initially, 185 after 1 min, 145 after 2 min, 130 after 3 min. Neither Vtx is new, but not abused. I can slow down the power drop by blowing air on the Vtx, but not sure where it would stop. Do I need to junk these (the Hawkeye is still getting OK video, the Dragonfly not so much)?
Yes it's normal that some vTX reduce power as they heat up. They are designed to be used on a quad in flight, not on a bench, so airflow is required. Put a fan blowing on them and you should see the output power is pretty consistent.
What's a good diversity fpv monitor? I am looking for a good one.
Spectrum Analyzers are not complicated at all. It's just that they're stupid expensive, especially in the 5+ GHz range.
nice, can it test goggles and vtx to see if there frequency is calibrated properly?
Sorry again ist it to use for digital DJI FPV V2. IT IS so cool.
is is a general spectrum monitor? could you use it to check which frequencies are in use in the area?
it would be handy if you turn up to a group so you can find an unused band/channel
how is the drift over time on that thing? can we send it back to the company to recalibrate it?
Nice I formative vid !
can you make a video showing the hot spots, using the flir camera, of the drone after a flight?
Can this be used to locate a lost craft? Can you install a directional antenna that will help you locate a signal based on the strength and direction? Can it read the transmission for RSSI from your r-xsr at 2.4ghz? I just want options next time I go down in tall grass.
SaturdayFPV yes you can, exactly as you've described, in fact Dronemesh has a homemade craft finde DIY tutorial, costs less than 70 bucks too I'm sure
Yes, that's one of its uses, just attach a patch antenna and you're off to search for your downed quad.
Does this null the signal when connected directly to the vtx? Or can nearby goggles still pick it up?
There may be a small amount of leakage but it should mostly or completely null the signal.
Will this work to get the signal strength of a UHF ham radio?
Nice tool ;)
Josh, we're all nerds here.
Quick question......why does my DYS F4 PRO V2 connect to beta and cleanflight.....before it would say it was not something blah blah blah for this configurator but now I can configure the flight controller in both
I guess you must have updated the firmware version to a supported one.
i want to ask you Joshua Bardwell and ImmersionRC, why dont we have FPV signals that can be bound from VTX to RX googles just like our 2.4ghz radios? this feels like then the old 35 band was in use for radios :)
Because digital video has too much latency, unless it is made very expensive. So yeah, it's exactly like old analog radios.
thank you :)
Yeah, but does it come in RP-SMA (j/k)
Should have put it on 600mw on let's say e4 and see the 900+ mw actual output
exactly what I thought
Where do I find the immersionrc tramp app for Android? My jaw dropped because I had no idea you change settings with your phone. Tony is right, the button sucks. Thanks for best knowledge on fpv
Search the Android app store for ImmersionRC
Good 👍
Cool device! But, can it be used easily to detect a VTx that's spamming all over the spectrum? It's helpful to be able to confirm someone's outputting 25mw on their channel, but there's a whole other cause of problems when they're also bleeding all over other channels.
That's not the purpose of this tool. You need a spectrum analyzer for that.
Yeah, you're right. I guess I was just highlighting that this device, while helpful, isn't going to be a silver bullet for solving all video issue disputes on race day.
I just feel obliged to mention this as somebody who runs a lot of race days and deals with a lot of pilots causing issues with spammy VTxs that are still only outputting 25mw, nominally, on their assigned channel. They're expensive, but our club's RF Explorer is really invaluable for these sorts of issues.
You can set your vtx settings in betaflight cli, then when you power on it sets the vtx settings.
Mike Sheets
Do you have to be using telemetry for that to work?
I've only done this with Smart Audio. If you go to the betaflight cli and type get vtx, you'll see a bunch of things including vtx frequency and power and a few other things. I believe smart audio simply changes these settings from osd, but changing them when plugged into a computer then powering on applies the changes and the smart audio sets the vtx.
Can this also be used for testing RF noise sources of any kind (e.g., 2.4Ghz signals that might interfere with radio, not just video)?
BWFPV A modified RTL-SDR will do that for you
RTL-SDR? cost?
BWFPV About 7 quid, Google it
It will detect energy of any sort in the supported frequency ranges. But I'm not sure that it has a simple band-scanner function. It's a power meter, not a band scanner.
Joshua Bardwell suggest that mode for the next update for it to Tony please would make it even better and a must have
consumer-grade 5-10% all good :)
*walks down starting line*
"alright good, this one's good, this one's good, this one...*20dB* *Horrified gasp!*"
*puts scanner away and slowly pulls out hammer* " You Have Violated The Sacred Race Law!! You Will Be Destroyed!!"
*Smashed quad with hammer as gasps and distraught murmurs emanate from the crowd. Somewhere a baby is crying*
iPhones that are 6 and newer all have nfc. I don’t know much about coding so maybe Apple doesn’t let you use it. But I know the iPhone 6 and newer all have the technology
Would be nice to have an nfc antenna for FC's then it could work for tramp or smart audio vtxs .
How is the spectrum spmvtx600?