How I made an AM transmitter

Рет қаралды 28,264

Күн бұрын

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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@Keyst0neScience
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Broke for free, Night owl ;
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Пікірлер: 138

@TRASHLEVIATHAN 4 жыл бұрын

reddest man alive tries to sell me pcbs

@h7opolo 4 жыл бұрын

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.

@power-max 4 жыл бұрын

@@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.

@Scott_C 4 жыл бұрын

Also... the echo.

@KeystoneScience 3 жыл бұрын

Man. If only you knew how much my girlfriend mentions this comment to me, it’s been like 69 times thus far 😂

@KeystoneScience 3 жыл бұрын

Power Max woah! I haven’t seen you in a while power max! How have ya been?

@JeffFrmJoisey 4 жыл бұрын

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_ALchannel 4 жыл бұрын

The infamous Tomato Man and his AM Transmitters

@ozule1782 4 жыл бұрын

Wow! You came back! This video has exactly what i need!

@henryswan1374 4 жыл бұрын

you're the person who got me into electronics! thank you!

@sammkablaam 4 жыл бұрын

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. 🤙🏼

@hunter1q12 4 жыл бұрын

Glad to see your officially back, watched a few of your streams when you were still in college. Nice work :) and congratulations on graduation.

@arkhilious 4 жыл бұрын

Congraduations?

@grzesiek1x Жыл бұрын

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!

@soonersciencenerd383 3 жыл бұрын

the am antenna is a ferrite bar inside the radio. the fm radio antenna is on the outside.

@Brazillianize 4 жыл бұрын

... 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!

@IT-sq5rj 4 жыл бұрын

Love the lighting swing.

@matthewsharp1178 4 жыл бұрын

I'm so happy you're back

@interesting7215 3 жыл бұрын

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

@secretagent5658 4 жыл бұрын

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.

@mohamedtebbo123 3 жыл бұрын

I like your work man !!! Keep it up , hopefully you get more subscribers !!!

@smburhan6323 4 жыл бұрын

Awesome editing !!!

@IT-sq5rj 4 жыл бұрын

Who was disappointed that he didn't play his theme music like he has done previously. We love you mate!!

@dangitsandy1745 4 жыл бұрын

YAY YOU ARE BACK, I didn’t want another Greek gadget guru incident.....

@mamupelu565 4 жыл бұрын

Your explanation in this video is better than the other's where you show how to build a crystal radio.

@EdwardTriesToScience 4 жыл бұрын

This is work great with the crystal radio!

@TheRagingWookie 4 жыл бұрын

Glad your back making vids!

@rajvanshsingh2018 4 жыл бұрын

I am glad you are back.....

@AmorDeae 4 жыл бұрын

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.

@northeastslingshot1664 4 жыл бұрын

Thank you! If you ever need growlights.... Ill send you some!

@teku3985 4 жыл бұрын

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 📻

@cvzerotubeyou 4 жыл бұрын

I bloody love you man!

@sonofmanarkjazz8965 Жыл бұрын

"Spicy." Sir, you had me at "you're watching Keystone Science."

@raghavendrasharma225 4 жыл бұрын

Last time I checked one of your videos,your channel had 50-60k subs, and now 200k. Time flies like a f***ing bee

@herupur1117 4 жыл бұрын

Next project please make an homemade variable capasitor bro

@jeavalos 4 жыл бұрын

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!

@fleckione-workinprogress4249 4 жыл бұрын

very useful Video!

@jacobthomas6669 3 жыл бұрын

You are so smart. I didn't understand all of it. Like your video.

@nitul2034 4 жыл бұрын

Yoo boiisss keystone is back....

@meow-says-the-cat 4 жыл бұрын

The oscilloscope is mesmerizing

@yee2867 4 жыл бұрын

Nice!

@slainwolf180 3 жыл бұрын

I made this and it works great. Inside my room. Outside my house, as far as the swamp, doesn't reach that far.

@andrewhamop6665 4 жыл бұрын

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!

@Dark_Matter2 Жыл бұрын

What would happend if someone uses spark gap transmitter

@Blu3Jao 4 жыл бұрын

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!

@noodleheadclub8846 4 жыл бұрын

What are the odds? I was just watching ur previous video.

@illum36963 4 жыл бұрын

Wow thank you sir. PCB I would love it ♥️3oak🖤

@DIYBiotech 4 жыл бұрын

hahaha what a beautiful advertisement

@danbhakta 4 жыл бұрын

You were one of Thanos' color there for a bit.

@siemiessidestep6449 2 жыл бұрын

very nice

@treasuretotrash2067 4 жыл бұрын

Yay hes back!

@eliconner7347 3 жыл бұрын

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.

@bomberoo243 4 жыл бұрын

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.

@erygion 4 жыл бұрын

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.

@Docbell60 4 жыл бұрын

Oh this was exactly what I was doing

@kerron_ 4 жыл бұрын

cool video

@Bruh-fc7ik 4 жыл бұрын

Pirate radio time

@butteredbleach3265 4 жыл бұрын

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)

@garyhalsey7693 4 жыл бұрын

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!

@KRAFTWERK2K6 Жыл бұрын

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.

@AshutoshSingh-to9vx 4 жыл бұрын

Can you Make an oscilloscope using Arduino. (Making sure it has high input impedance)

@mohali7027 3 жыл бұрын

Thanks for all the videos could you make metal detector

@narayanbandodker5482 4 жыл бұрын

Wearing a lab coat adds +100 scientist points

@SCIENCEMAKER 4 жыл бұрын

❤❤❤

@the_ALchannel 4 жыл бұрын

BTW nice video

@crazystuffproduction 4 жыл бұрын

would love to see some SSB

@mustafafaruqi2097 4 жыл бұрын

When are you going to make the video on the Large Tesla coil

@ufowatch Жыл бұрын

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!

@AmanKhan-ec6lg 3 жыл бұрын

I don't have the display screen.. Can i build this circuit without that display screen that you have used in video?? Plz reply

@SteveCockneyRebel 2 жыл бұрын

Is it the same for FM? what needs to change?

@electroimpyo 9 ай бұрын

Easy to build shortwave radio transmitter

@colddheartt 4 жыл бұрын

Can you build a radar detector? 🤔

@bisericadamaroaia 3 жыл бұрын

Hi. I want to make the AM transmitter. I need a link where I can find the diagram and the list of parts. Ion

@isaiahhiggins 4 жыл бұрын

420khz, nice

@Eric-yj5xg 4 жыл бұрын

Play alien sounds on a popular am radio. If that exist.

@user-du4fz5kk4y 4 жыл бұрын

I am so miss your video

@noodleheadclub8846 4 жыл бұрын

I'm getting (no matching function for call to'Adafruit_SSD1306::Adafruit_SSD1306(int, int, TwoWire*, int)') error.

@atharvap1994 4 жыл бұрын

Can we still expect the Codys lab collab?

@najamhaq 3 жыл бұрын

Nice veiled way to say sorry. Did the person responded back ?

@mannyquinn9031 4 жыл бұрын

Hey keystone, what do you study in college ??

@focusonprojects3455 4 жыл бұрын

Can you send the circuit boarded ?

@stellasolaria6224 3 жыл бұрын

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🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏

@Hex-Mas 4 жыл бұрын

This can be done with a rpi3-B

@kolinevans9127 4 жыл бұрын

Lol awesome

@andreabaldini7073 3 жыл бұрын

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 ..

@FrancisLitanofficialJAPINOY 8 ай бұрын

Also up to 1701 kHz for Australia, Guam, Saipan and the Philippines

@bunazsofia1088 3 жыл бұрын

how can i make an analog tv transmitter?

@mohammadbanisalman8640 3 жыл бұрын

I think I know how make a ionic metal detector, but l need some one builds their it's circuit. can yo do this

@trr3576 4 жыл бұрын

Analog AM right?

@cobalt_3283 4 жыл бұрын

just lay out a really long wire and use it as an antenna tho

@syedbn 4 жыл бұрын

Sir where are you from, I'm big friend.

@beanbop373 4 жыл бұрын

@KeystoneScience 4 жыл бұрын

Hello ;)

@beanbop373 4 жыл бұрын

Have a good day!

@beanbop373 4 жыл бұрын

And I think I was first!

@beanbop373 4 жыл бұрын

But don’t quote me on that

@EnterJS 4 жыл бұрын

Hey ! How to Make a Multi-Freq . Transmitter Hit like & Make Him Sees

@whatthefunction9140 4 жыл бұрын

MORE SCIENCE!!!!

@dtteamofficial 3 жыл бұрын

16mhz is the cpu speed of the arduino

@egilskalnins6635 4 жыл бұрын

try to make fm transmiter

@user-qd3pb6xl2x 2 ай бұрын

Song name pls

@nigeladams8321 4 жыл бұрын

This is going to be useful once the bombs drop

@LPkukin 4 жыл бұрын

You look like Ben Heckendorn's lost child.

@subhasishbhaduri2938 4 жыл бұрын

When you're making SSTC?

@xscitobor1233 4 жыл бұрын

pink

@sarchlalaith8836 4 жыл бұрын

*Bumps up power drastically creating a jammer...*

@mamupelu565 4 жыл бұрын

so thats how you build a jammer... could you disrupt drones though?

@amyshaw893 4 жыл бұрын

FCC? I thought you were British 🤦🏻‍♂️

@sarchlalaith8836 4 жыл бұрын

Bruh.... With that accent? No. I'm British, he's a yank, 100%

@cisarvialpando7412 4 жыл бұрын

Make a large musical tesla coil diy......

@motherjoon 4 жыл бұрын

You don't ADD waves in AM modulation, you MULTIPLY

@Alex0474 4 жыл бұрын

*That's a lot of videos*

@mamupelu565 4 жыл бұрын

Show us how to make a 2.4ghz device from scratch, like a wifi card??

@Scott_C 4 жыл бұрын

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.