Excellent my Friend 🙏 Good luck with the Exam & Welcome to the World of Amateur Radio ⚡🙏⚡ Let me know how you go with the project too. 73 from VK3VKe Crazy Ham 👌
Thanks So Much my Friend. Life had gotten in the way but I am still here. I hope you find the video of value. I am not very good at videos and to be honest this video took me all day to get close to right hahaha. 73 from Crazy Ham ⚡🙏⚡
@@michaellanders1601I do think it is cool that I am concerned it is too sensitive where more YT vids on how to build an RF meter are too insensitive lol.
I have only tested it at HF, VHF & UHF. The antennas alone would make it problematic at GHz range & I am unsure if the diodes are fast enough too. It works very Well across HF Bands, VHF & UHF for sure my Friend. Thanks for the Question ⚡🙏⚡ (Antenna lengths are critical for VHF and UHF as mentioned in the Video)
@@crazyhamI bought an rf meter, but it can only detect waves from 50hz to 3.5ghz, I have a hair dryer that emits very strong rf radiation but I can't measure it,How can I measure and remove them?
i can be sure the device emits very strong RF waves but the 50hz to 3.5ghz measuring device cant sense it, maybe at ehf shf frequencies, how can i get a device to sense them
Great questions my friend. The Hairdryer will be emitting significant RF waves on a number of really low frequencies. If too low in frequency, my meter isn't sensitive enough. Really low frequencies have really really long wavelengths, *So small antennas are less effective on really long wavelengths.* This meter & perhaps yours too and many others will pick up things like LED drivers etc as they also emit a lot of low frequencies but much higher in frequency compared to the hairdryer (assuming no fancy circuits). U could always use an oscilloscope, set to the range you are interested in and attach wires to the probes as an antenna system and see the different frequencies and how strong or weak they measure etc. Even a fairly cheap pocket oscilloscope would be ideal. It's what I would do in your situation & if you haven't used an oscilloscope it will be a great and useful learning curve too ⚡🙏⚡
Ok, I understand your question. No, this device will not find metal. It can only detect radio signals coming from an antenna system. I think there are a number of videos on youtube showing different ways to make a metal detector. Thanks for your question & I hope you find the info that you need my friend 🙏
Thanks Mate. Maybe that is something I can consider in the future. My channel is mostly related to radio (Amateur Radio) but I do think that would be a very interesting topic to cover. Thanks so much for your feedback & best wished from Crazy Ham in Australia ⚡🇦🇺⚡
Hopefully this link can help you start to experiment but I will look deeper into this and perhaps do a video in the months ahead on the subject. www.wikihow.com/Build-a-Metal-Detector
Schematic at 8:37
About to sit my Foundation exam very soon. I think this will be my first project
Excellent my Friend 🙏 Good luck with the Exam & Welcome to the World of Amateur Radio ⚡🙏⚡
Let me know how you go with the project too.
73 from VK3VKe Crazy Ham 👌
Really cool tool. I make one when I have time. 73's from California.
Thanks Mate 🙏 73 from Victoria Australia 🇦🇺
great to see you posting again I thought the tube canned you
Thanks So Much my Friend.
Life had gotten in the way
but I am still here.
I hope you find the video of value.
I am not very good at videos
and to be honest this video took me all day to get close to right hahaha.
73 from Crazy Ham ⚡🙏⚡
@crazyham don't worry about anything we love what your doing
Thank you so much mate.
I really appreciate that feedback
⚡🙏⚡
@@michaellanders1601I do think it is cool that I am concerned it is too sensitive
where more YT vids on how to build an RF meter
are too insensitive lol.
Good job dude - I'm going to build one soon.
Thanks my friend.😁
Let me know how you go too
⚡🙏⚡
Hi Master, a question can be explained to this device
Hi mate, What is your question ?
What is the operating frequency ghz mhz?
I have only tested it at HF, VHF & UHF.
The antennas alone would make it problematic at GHz range
& I am unsure if the diodes are fast enough too.
It works very Well across HF Bands,
VHF & UHF for sure my Friend.
Thanks for the Question ⚡🙏⚡
(Antenna lengths are critical for VHF and UHF as mentioned in the Video)
@@crazyhamI bought an rf meter, but it can only detect waves from 50hz to 3.5ghz, I have a hair dryer that emits very strong rf radiation but I can't measure it,How can I measure and remove them?
i can be sure the device emits very strong RF waves but the 50hz to 3.5ghz measuring device cant sense it, maybe at ehf shf frequencies, how can i get a device to sense them
I can say for sure that DC motor hair dryers emit RF waves, but I can't get a device to measure it.
Great questions my friend.
The Hairdryer will be emitting significant RF waves on a number of really low frequencies.
If too low in frequency,
my meter isn't sensitive enough.
Really low frequencies
have really really long wavelengths,
*So small antennas are less effective on really long wavelengths.*
This meter & perhaps yours too and many others will pick up things like
LED drivers etc
as they also emit a lot of low frequencies
but much higher in frequency compared to the hairdryer (assuming no fancy circuits).
U could always use an oscilloscope, set to the range you are interested in
and attach wires to the probes
as an antenna system
and see the different frequencies
and how strong or weak they measure etc.
Even a fairly cheap pocket oscilloscope would be ideal.
It's what I would do in your situation
& if you haven't used an oscilloscope
it will be a great and useful learning curve too ⚡🙏⚡
With this device, you can also find buried gold metal
Ok, I understand your question.
No, this device will not find metal.
It can only detect radio signals coming from an antenna system.
I think there are a number of videos on youtube showing different ways to make a metal detector.
Thanks for your question & I hope you find the info that you need my friend 🙏
@@crazyhamThanks for your explanation, Professor, also include a metal detector on the TH-cam channel
Thanks Mate.
Maybe that is something I can consider in the future.
My channel is mostly related to radio (Amateur Radio)
but I do think that would be a very interesting topic to cover.
Thanks so much for your feedback & best wished from Crazy Ham in Australia ⚡🇦🇺⚡
Hopefully this link can help you start to experiment but I will look deeper into this and perhaps do a video in the months ahead on the subject. www.wikihow.com/Build-a-Metal-Detector
@@crazyhamcan i have your facebook