$50 RF Power Meter - 1MHz - 10 GHz
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- เผยแพร่เมื่อ 10 มี.ค. 2021
- Ok, Here is an unboxing, an testing of a super inexpensive RF power meter! If you are looking to get into the high frequency Gigahertz RF regime.. this power meter might be a great addition to you ham radio, RF setup, or mad science experiments lab!? It is not the most accurate power meter.. but it is OK for some applications.. I do a calibration of this device, measuring it's frequency response over the range of operation, and also measuring its accuracy at different power levels and linearity versus power input. I also measure some different devices, and use my network analyzer to measure the return loss of the input of this meter.. It is a pretty thorough testing of the functionality of this device! Some of the links are listed below!
RF Power Meter:
amzn.to/2OlfFNE
8x AA bettery holder
amzn.to/30wGIb4
Vector Network analyzer
amzn.to/3eo8C1k
Tiny Spectrum Analyzer
amzn.to/3cpOngY
Tiny Spectrum Analyzer Video
• TinySA - Tiny Spectrum...
RF Signal Generator Video
• RF Signal Generator 35...
SAA2 Vector Network Analyzer Video
• S-A-A-2 Simple Vector...
![✔ Как узнать, какой канал самый сильный? Дешевый аналог ImmersionRC RFmeter [RF-Power8000]](http://i.ytimg.com/vi/-zLqfhb64vE/mqdefault.jpg)
The unit uses an AD8318 which has a maximum freq of 8GHz. I would liked to have seen tests at other frequencies across it's range to show linearity.
Is it really that difficult to use a camera?
This absolutely genius idea. I am working with professional RF equipment and one of the issue i have that all the new USB power sensor do not contai display. You allways required PC to read from them (that mean PC, monitor, keyboard , mouse). So all the portability is gone. I am waiting long time to see if somebody will stic display on this power sensors. This power meter look like the solution.
Additional, you can measure for example 3GHz at -1.1dBm as in the video. Now use it with your generator and dial the power up and down at 3GHz until your known test set also shows -1.1dBm. You can read the real power level off your good test instrument and know how much RF power your other device was creating. Use the same cables and connectors. Again, build a chart you can refer to later. S
Not a bad cheap rf meter at all! Good enough for a relative indication for sure, Thank you for the video testing
Dr. Jaynes! Noticed the background impedance / admittance calculations, too! Z=R+-jX, Y=1/Z
very helpful
On Amazon they saing that the range is from -50 to 0dBm. I will put 20dB attenuator in front of it to make it clouser to standard RF sensors of -30dBm to 20dBm (more like termal Power Sensor) . In the same time you can improve matching (Return Loss up to 40dB). You will need to make new correction table base on some professional Power Sensor.
With that precision I think you could also try to use the RF Power Snitch hooked up to an Arduino. Although that will probably struggle above 3GHz as well. Never tested that.
Hello, nice video, I am very grateful if You can help, what readings/settings to look and antennas can be attached to it to try catch up some 4& 5G frequencies ? Most devices are £££ but readings what is measured seems to be easy .. Know little basics but I am not an expert in this field. Thank You
How much power or voltage can this meter actually handle? I want ot build my own from scratch for AM applications, I was looking into it and need to build a very accurate attenuation voltage bridge
Would this work for mesauring specific frequencies if you used a passive tuned antenna to certain frequencies in this range?
I don't see why not? The laws of physics should still apply! Yes.. if you are interested in a single frequency, then your don't have to worry about the frequency dependence of the detector.. also... I don't think the variation is that bad??.. at least for the price.. even HP have some error... but theirs are much lower.. But, for the price.. this one is a pretty good tool,.. Thanks..
I just rx one from AliExpress. It says 5V. It is NOT accurate! 😂
At 50 MHz, the reading jumps around.
Next to the input connector, there appears to be a 3-way band selector.
I should think a major issue is the connectors and cables. Its impossible to have a single cable show exactly the same results (power and attn losses, aka VSWR) at all these frequencies. I'm sure they are decent cables it the losses will mount as you climb from 1GHz to over 10GHz in even the most expensive cables. I have this device and only trust it to showrooms and losses but not actual output levels as I don't have a device to check against as you have in this video. I recommend building a paper chart\table of the differences between your good RF generator and what this device is telling you. Happy signals.
S
Which ic is used is it rf log ic??
Sirve para radio cibi 27 mhz?
How about 5V or 13.8V?
Is it any good, under value and unpredictable non linear with standerd meter.
I just rx one from AliExpress. It says 5V. It is NOT accurate! 😂
At 50 MHz, the reading jumps around.
Next to the input connector, there appears to be a 3-way band selector.
I'm looking for someone who can measure from -120 dBm. Do you know some ?
TinySA Ultra?
Add a preamp?
I'd get one because it's so small and cute. But I already have an HP meter, so I can't rationalize getting one. It keeps me from all the fun of playing with new stuff.
Impossible to watch with out getting sea sick !
Very bad measuring. Sometimes 2-3db difference between the real power and measured one. Be careful
Yes, but it is cheap... I guess this device is good for ROM, and not precision work??!
@@jaynesnetwork the device is pretty good when 2-3 db precision is not important :)
I just rx one from AliExpress. It says 5V. It is NOT accurate! 😂
At 50 MHz, the reading jumps around.
Next to the input connector, there appears to be a 3-way band selector.
An inaccurate device is worse than no device at all.
Your yardstick isn't accurate to 3 light bands of flatness, so it's useless?
I just rx one from AliExpress. It says 5V. It is NOT accurate! 😂
At 50 MHz, the reading jumps around.
Next to the input connector, there appears to be a 3-way band selector.
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