How I made an AM transmitter
ฝัง
- เผยแพร่เมื่อ 29 ก.ค. 2024
- High quality & advanced PCB (Rogers, HDI, rigid-flex and aluminum PCB ) : www.pcbway.com/ (Again, a really big thanks to these guys for sponsoring the video 😁, they have been great to work with)
I am in the process of building my website still, so here is a temporary place holder as I work on it. Step-by-step instructions will be available within a week! 😉
keystonesciencewebsite.weebly...
Here is Dr. Volt's youtube channel, Check him out!
/ @doctorvolt
Original AM Transmitter Video:
• How to make a AM Radio...
How to make an AM Radio:
• How to make a 3D print...
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reddest man alive tries to sell me pcbs
he used a green screen filter which removes the green color thus making him look redder, but he failed to adjust the "Key color spill reduction" level which would have normalized the hue.
@@h7opolo I think more accurately what happened was the cameras auto white balance trying to compensate for all the green. Its why you should set it manually with a white card. Although this could have been fixed in post to some degree as well.
Also... the echo.
Man. If only you knew how much my girlfriend mentions this comment to me, it’s been like 69 times thus far 😂
Power Max woah! I haven’t seen you in a while power max! How have ya been?
This reminds me of a funny story my Dad told me from when he was a kid, around 1940. He and a friend both built tube AM Receiver/Transmitter in/on a cigar box that they could attach a telegraph key to. They lived in the same apartment building in The Bronx, on different floors with windows facing the same way. Well, they connected their radios together via a wire strung along the outside of the building and they discovered by messing around with the tuning and telegraph key, they could change radio stations on their parents' radios on a certain frequency, just like yours. Only problem was that their connecting wire acted as an antenna that was 30-40 feet long, and they were changing people's stations in the building and then some. Guess who came a knocking?? The FCC! When they saw it was 2 kids messing around with changing their parents radios and not realizing they were affecting much more than that, they got a lecture and made them disconnect the radios from each other!!
BTW, glad I'm a fast listener!
The infamous Tomato Man and his AM Transmitters
Wow! You came back! This video has exactly what i need!
you're the person who got me into electronics! thank you!
It’s been a privilege to watch this channel (and you) grow into what it is today. Refreshing to see some worthwhile, educational content within a never-ending sea of garbage. 🤙🏼
Glad to see your officially back, watched a few of your streams when you were still in college. Nice work :) and congratulations on graduation.
Congraduations?
I'm so happy you're back
the very low power transmitters and home built receivers are really great! Low cost and also safe range ( so we can't interfere any other signals, radio stations etc.) but it is very satisfaying to build for its own something like this and having fun with it, exploring and observing really astonishing things!
Awesome editing !!!
This is work great with the crystal radio!
... this is the first video that I 'liked' (button click) after just watching the commercial you did for your sponsors ... and now I'm subscribed too!
Love the lighting swing.
Hey you're back! :) Glad to see someone who is my inspiration back in action :) I made the microwave gun and several other things. I even got my welding machine idea from your high voltage microwave oven transformer video for lichtenberg burns.
I can't send letters at the moment, but I just wanted to say, I love your videos! You have inspired me to start collecting old electronics and re-using them for new projects! So far I have built a pocket taser, emp, microphone, security camera, data transfer, Bluetooth transmitter and receiver, computer and bench power supply, all from old electronics! Keep doing what you are doing and you will certainly hit that hefty 1 mil subs! :D
Glad your back making vids!
the am antenna is a ferrite bar inside the radio. the fm radio antenna is on the outside.
I like your work man !!! Keep it up , hopefully you get more subscribers !!!
I am glad you are back.....
very useful Video!
I bloody love you man!
Nice!
Your explanation in this video is better than the other's where you show how to build a crystal radio.
I've been thinking of making a radio transmitter for a guitar. Radiocomms are pretty dirty around here anyway what with a lot of people with less than legal homemade transmitters, so having a signal that will be readable within my neighborhood won't be a problem, so I might make an antenna of about 65cm possibly mounted along the strap to get some quality and get rid of some more noise.
Thank you!
If you ever need growlights....
Ill send you some!
Awesome video! I’ve been a long time viewer and was wondering when you would make an in depth video talking about AM or FM radio 📻
Next project please make an homemade variable capasitor bro
hey I have been thinking about making a tesla coil and I was wondering if they high voltage capacitors you made in a video a few years back would work? I was also wanting to ask if laminating sheets could work instead of projector film to make the capacitors.
Yoo boiisss keystone is back....
Who was disappointed that he didn't play his theme music like he has done previously. We love you mate!!
Last time I checked one of your videos,your channel had 50-60k subs, and now 200k. Time flies like a f***ing bee
You are so smart. I didn't understand all of it. Like your video.
Hi. I want to make the AM transmitter. I need a link where I can find the diagram and the list of parts. Ion
hahaha what a beautiful advertisement
YAY YOU ARE BACK, I didn’t want another Greek gadget guru incident.....
I've been watching your videos for a long time now and today I was watching Groundhog Day (Bill Murry) and noticed the truck LOGO! It even said KEYSTONE!
very nice
Yay hes back!
Felt a bit brief, I feel like this is transmission lines? I know it's similar property of the 1/4 wavelength rule you mentioned. But it looks at 1% of the length of the wavelength being propagated. Maybe these are two separate concepts and I need to Google it out.
What are the odds? I was just watching ur previous video.
Wow thank you sir. PCB I would love it ♥️3oak🖤
I don't have the display screen.. Can i build this circuit without that display screen that you have used in video?? Plz reply
Can you Make an oscilloscope using Arduino. (Making sure it has high input impedance)
Nice video. I was expecting you to make a series fed Hartley oscillator with that huge varicap and attach the data line through the xistor, but I should have known better; we have the technology!
The circuit diagram of the transmitter as me a bit confused. You have the Aref pin and the A0 pin connected with a 1k ohm resistor. Assuming no significant current is running in or out of the Aref pin, both pins would have the roughly the same voltage on them. Doesn't that mean that AnalogRead(A0) would always return somewhere around 1024? (I haven't seen the code on the Arduino yet, but I imagine this would be a problem as I'm guessing the A0 pin is being used to interpret the signal from the audio input)
I'm getting (no matching function for call to'Adafruit_SSD1306::Adafruit_SSD1306(int, int, TwoWire*, int)') error.
You were one of Thanos' color there for a bit.
Ah sounds like crap, I love it! I gotta make one of these, I'll follow your Instagram. Thank you for the great video, I'm glad you're back.
Is it the same for FM? what needs to change?
"Spicy." Sir, you had me at "you're watching Keystone Science."
I made this and it works great. Inside my room. Outside my house, as far as the swamp, doesn't reach that far.
The oscilloscope is mesmerizing
cool video
As an amateur radio operator, I thank you for not blasting out power or using a good antenna. I've got a long dipole antenna in my backyard, kind of thing that you would use for 1/2 wavelength AM or shortwave, and it's crazy how much interference I can see. Now of course it depends on the time of day, but because devices like this are so easy to build, it's very common to see crazy interference especially in populated areas. Now if you were to use heavier-duty components, more power input, and a 1/4 wave antenna I'd bet you could get some decent distance on that. But of course this would be bad and quite illegal like you said. It's actually very trivial to direction find even a moderately weak signal, but nothing nearly as weak as what you are putting out and it's not an issue anyway because you are not creating intentional interference and keeping your power output miniscule. Again thank you for your educational and fascinating content. I am glad you are back, keep it up!
What would happend if someone uses spark gap transmitter
Oh this was exactly what I was doing
can you build a rf receiver that would receive 1.680ghz ? it is important it is thought to be a new alien signal transmitted every time a ufo is nearby. it is true i have seen this happen. so can you make one? and can you show us how also? thanks love your videos!
Please help me, I didn't find much difference in building an AM and PM transmitter, but how come???? Please help please please please please please🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏
how can i make an analog tv transmitter?
Oh damn, I definitely have to change some values in the code from 10 to 9khz because i don't live in Yankee land :P Other than that this AM transmitter is pretty straight forward and a really nice use of an Arduino. So i really don't need 10 meters of wire for the Antenna but just a short retractable FM antenna would work too? Because i really only need it for a short reception range.
Pirate radio time
I think I know how make a ionic metal detector, but l need some one builds their it's circuit.
can yo do this
you can do the ace at 9khz from 531khz to 540,549,558 ..... up to 1611? what should i change in the arduino code? Thank you so much ..
Also up to 1701 kHz for Australia, Guam, Saipan and the Philippines
Pretty good video. Just one point (without mentioning the AMDSB transmitter that you’ve built, as opposed to SSB), is that your resonant frequency equation should read Fr not F. Apologies for the incorrect F, my iPhone doesn’t do subscript lol. You still have a new subscriber though!
BTW nice video
When are you going to make the video on the Large Tesla coil
Thanks for all the videos could you make metal detector
Can you send the circuit boarded ?
Song name pls
Analog AM right?
Can you build a radar detector? 🤔
would love to see some SSB
This can be done with a rpi3-B
Wearing a lab coat adds +100 scientist points
❤❤❤
Hey keystone, what do you study in college ??
Play alien sounds on a popular am radio. If that exist.
Lol awesome
Sir where are you from, I'm big friend.
just lay out a really long wire and use it as an antenna tho
Can we still expect the Codys lab collab?
Nice veiled way to say sorry. Did the person responded back ?
I am so miss your video
420khz, nice
Hi
Hello ;)
Have a good day!
And I think I was first!
But don’t quote me on that
Easy to build shortwave radio transmitter
try to make fm transmiter
When you're making SSTC?
FCC? I thought you were British 🤦🏻♂️
Bruh.... With that accent? No.
I'm British, he's a yank, 100%
MORE SCIENCE!!!!
*Bumps up power drastically creating a jammer...*
so thats how you build a jammer... could you disrupt drones though?
digital am transmiter to understand analog radio?? -.- its not the right way to learn electronic
Show us how to make a 2.4ghz device from scratch, like a wifi card??
*That's a lot of videos*
16mhz is the cpu speed of the arduino
Keep in mind the am circuit in most AM radio's use a ferrite core antenna that is inside the radio
Keep in mind that the plural word radios doesn't have an apostrophe! 😉
Make a large musical tesla coil diy......
This is going to be useful once the bombs drop
pink
I am not sure that this is the simplest AM transmitter you could possibly make. Why a microcontroller??
You don't ADD waves in AM modulation, you MULTIPLY
So I found this paper. Which explains how they combine microwave transmitters and a jet engine to make a jet engine produce thrust but without jet fuel. According to the paper it can produce as much thrust as a regular engine.
aip.scitation.org/doi/full/10.1063/5.0005814
I don't have the skills or the lab to try and remake the experiment, but I thought you might give it a shot. Or know some people whom might be able to get something off the ground.