ImmersionRC RF Power Meter: What You're Missing

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ImmersionRC RF Power Meter: What You're Missing

Рет қаралды 11,136

Күн бұрын

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00:00:00 - You need an inexpensive RF power meter!
00:01:23 - Why measure output power?
00:02:13 - Connect the power meter to the vTX
This is the attenuator that I use with the power meter - amzn.to/3oI8fFW
00:04:59 - How to navigate the menus
00:05:36 - Set the Attn value
00:06:05 - Mode: Avg vs. Peak
00:06:21 - What's the "MHz" option do?
00:07:25 - Attenuators cause inaccurate values
00:08:12 - Identify a bad cable with the power meter
00:09:22 - How to use the power meter with an antenna
00:11:37 - Don't wear out your SMA connector
00:12:20 - Have I earned your support today?
00:13:34 - Is this accurate enough to trust?

Пікірлер: 50

@decommonifyable Жыл бұрын

My ex also had limited mating cycles.

@MCsCreations Жыл бұрын

I guess that's what she said?

@UnRatedNL Жыл бұрын

This takes the win for the best comment 😂

@M4trix42 Жыл бұрын

Maybe you've been in turtle mode too much

@alperenozgur Жыл бұрын

bruh..

@chucktaylor1933 Жыл бұрын

😂😂😂😂😂😂

@Rejdukien Жыл бұрын

Good on you for mentioning to snug up the SMA with a wrench. Using a VNA at 6GHz, I noticed the effect of proper torque very quickly. They actually make/sell 1Nm torque wrenches specifically for SMA connectors.

@PowderMill Жыл бұрын

Excellent point…. SMA torque wrenches are a bit pricey for something only used very occasionally, but absolutely worth it. I have seen guys take small open ended wrenches and crank down on SMA fittings on some extremely expensive gear (telemetry transmitters / tiny duplexers / portable handheld P25 radios, etc. It was truly frightening. As JB mentioned, this meter is far less than the cost of a single attenuator in a lab or critical grade comm shop. In fact, you could buy THOUSANDS of them for less than the cost of a quality VNA and hundreds of them for the cost of a good spectrum analyzer. It seems like a no-brainer to drone enthusiasts working with RF . Thanks JB - for YET ANOTHER awesome video.

@PowderMill Жыл бұрын

One quick point… with less accurate test gear, sometimes the best way to utilize such equipment is to use it as a “a to b” comparator. A great too to check multiple brand or type jumper cables against each other or to compare multiple connectors to each other, etc.. Though this tool seems to be pretty accurate , especially considering the price.

@MadDragon75 Жыл бұрын

This is where ham radio experience comes in handy. The difference is they call it a SWR meter or a standing wave ratio meter and you hook it up the same way, with a jumper. Or you use the field strength meter with an antenna (JB's finger knuckle test) to measure the direction and field strength of the broadcast wave.

@skyfoxfpvulpine Жыл бұрын

Need one of these after one of the tiny trainer races I was at. Video was crap, turned out my vtx was barely broadcasting at 20mw.

@licensetodrive9930 Жыл бұрын

Thank you for making this video, I've had a ImmersionRC RF Power Meter V2 for a very long time but not got round to investigating how to use it correctly.

@PowerScissor Жыл бұрын

I refuse to believe anyone who got one of those figured out how to use it properly by the usual "play around with it" method. I've probably grabbed it a total of 4 times since it was released...never got any reading that made sense for the scenario I was testing...and put it back in the box for another 6 months. This video is what I've been waiting for apparently.

@LukeRT Жыл бұрын

Would love to see a VTX round up of a bunch of VTXs and their outputs 😮

@MCsCreations Жыл бұрын

Thanks a bunch for the tutorial, Joshua! 😊 Stay safe there with your family! 🖖😊

@ch347 Жыл бұрын

11:38 but this adapter changes connector type, you can screw on a pigtail, but not an antenna. For longevity you need different adapter.

@Jacobghel Ай бұрын

Can this be used for digital VTX’s like DJI and Walksnail?

@hapsti Жыл бұрын

yeah you should have definitely cooled that rush tank solo with a fan, it was at 1W (blue led)

@Robert-ug8uu 11 ай бұрын

Does the battery charge through the usb on yours? Orqa sent me a replacement because my first one didn’t charge and the replacement doesn’t charge through the usb either. I have to take the battery out to charge it.

@NotOfThisWorld567 Жыл бұрын

Been waiting for this upload since the last one you did with dude from Immersion RC (Hugo?).

@JoshuaBardwell Жыл бұрын

Damn that was five years ago.

@NotOfThisWorld567 Жыл бұрын

@@JoshuaBardwell 🤣 One great thing about this hobby is that it exercises your patience. Good for our character.

@NotOfThisWorld567 Жыл бұрын

@@JoshuaBardwell Started my patience training with my parents, then adopted a dog, then my kids, then FPV, and now I got a 3d printer. If I can do the 3d printer, I'll have a black belt in patience.

@MrKeith5021 Жыл бұрын

Can you use this with directional antenna to find a downed drone?

@Gabriel-qh5yv Жыл бұрын

Joshua you are the best in explain for everyone to be easy to understand 🙂 now makes sense how to use ... your clips i wach over time every single of them this is the reason im still in the hobby thanks to your education full for this hobby 🙂

@thomasbinder4905 Жыл бұрын

I fogott no kabel. Only antenna,please.

@dakzer55 Жыл бұрын

Isn't this the same ImmersionRC Power Meter V2 you reviewed about 5 years ago. Still no competition if so, but gone up in price

@ToddIrwin Жыл бұрын

Great Content Capt'N

@RCFPVSTL Жыл бұрын

Great content!

@masterguy29 Жыл бұрын

Hey Joshua I just finished a fpv build and on my tx16s I noticed that after calibrating my controller and setting endpoints, the 4 main channels only go to +/-98%. Any ideas on what could be causing that?

@wh0deany Жыл бұрын

Adjust outputs in model settings in your radio till you get 1000min and 2000max in betaflight

@user-kimseoungwoo 4 ай бұрын

There's no place to sell it. Please recommend something else

@felixemmann9262 Жыл бұрын

Nice

@thomasbinder4905 Жыл бұрын

Oh jo... I look a lot of times your Chanel. But i look only for my dji fpv v2 digital. A test box for 0.5 watt and the channel. Test. Help me please. A esay Not so complicated instroment for me. Gif me please a link where i can bey it . 100 Dollars no problem. Please. Grüße aus deutschland. 😢 I think my drone have a problem . I will be found it self. By by

@ihaveanunorigionalname Жыл бұрын

I use a communication analyzer at work it's about 50K and it stops at 1 GHz LOL I can't use it for the hobby it's ridiculous And on the subject i would go far as to say perhaps even if it could as soon as you put the antenna on a conductive carbon fiber frame you get Pim harmonics in all kinds of stupid stuff that make it pointless. Edit: if you use a 10db it'll be an order of magnitude less so all you have to do is shift the decimal point over you don't have to do math every 3db is a half every 10 DB is an order of magnitude one ten hundred thousand

@DanDmma Жыл бұрын

Test the DJI fpv with the ham hack

@Dreamcutter Жыл бұрын

Deja Vu... Same as published a year ago, no?

@JoshuaBardwell Жыл бұрын

Are you sure about that?

@petermartin7011 Жыл бұрын

No... Of course your the authority .. but was not this device covered at least 2x before. I recall you being excited tat there back in stock at PRC...and discussing the value vs accuracy.

@JoshuaBardwell Жыл бұрын

I don't think I ever made a detailed tutorial like this. I previously tested the accuracy, but that was v1 of the meter and this is v2, and anyway it's always good to double check every three or five years I suppose.

@koshakov5653 Ай бұрын

Так, це вже надто велика проблема, нам треба радикальні зміни, постійні контрольовані і чіткі. Не можна зневажати старання, життя і здоровʼя наших людей, людей: завдячуючи яким і заради яких ми зараз тут живем …

@turnrock Жыл бұрын

Does this even work with a digital VTX?

@JoshuaBardwell Жыл бұрын

It measures power, so yes it works in that sense. But for systems like DJI and Walksnail, that have 2-way communication and dynamic output power, it may not be as useful to measure the power using this device (or any other).

@DamageincFpv Жыл бұрын

How many times have you done this vid like 3 or 4 times. Running out of content.

@JoshuaBardwell Жыл бұрын

I made a version of this video in 2018, when the power meter first came out. Five years later, I updated it to reflect the latest firmware and hardware, and to do a better job of tutorializing how it works, with details missing from the 2018 video. Not sure why you think I've made the same vid 4 times. Glad you've been watching long enough to remember the original 2018 video though. Thank you!

@sunsetpark_fpv Жыл бұрын

I guess you never watched the older vids (like 5 years ago) because this is an actual TUTORIAL where the others just demonstrated its features. It seems like maybe you're "running out of dumb things to say".