Building a Revolutionary Spark Gap Radio (ft. Blueprint)

[@abelferquiza1627]

My father is ninety years old. he started as radio telegraph operator when he was nineteen and completely retired after 44years in service merchant ships companies. He is so proud telling me he ended his carrera with satellites but he started with the "sparkers" i didnt know what it was and he doesnt remember. Thanks a lot!!!!!

[@PlasmaChannel]

That's a really cool personal story. Thanks for sharing! I am honored you enjoyed my viddy.

[@felixdiaz4438]

@@PlasmaChannel 👍

[@soveriegnborn]

explain how a - when Marconi won the Nobel Prize in 1911, Tesla was furious. He sued the Marconi Company for infringement in 1915, but was in no financial condition to litigate a case against a major corporation. It wasn't until 1943-a few months after Tesla's death- that the U.S. Supreme Court upheld Tesla's radio patent number 645,576. The Court had a selfish reason for doing so. The Marconi Company was suing the United States Government for use of its patents in World War I. The Court simply avoided the action by restoring the priority of Tesla's patent over Marconi.

[@rowgler1]

Mr Tesla was an inspired genius but he was taken advantage of by less idealistic business men that made their fortunes from his inventions. It happens. All the time. He died neglected, but we can hope his soul lives on and has moved on to something even more advanced. As we begin to appreciate him, he is probably too successful and busy to even notice.

[@demicenj6919]

rowgler1 The US Supreme Court has ruled on June 16, 1943 thst Marconi’s patent is invalid as it used elements form Tesla’s patents. Ruling is clear..... Marconi goes to the History garbage. I have the whole copy of original Court transcript.

[@rowgler1]

Thank You, I appreciate it on his behalf, he certainly made all our lives better.@@demicenj6919

[@rowgler1]

I guess Tesla got "Munsoned".@Muckin 4on

[@wbeaty]

@@demicenj6919 Nobody seems to realize that the "four-circuit invention" has another name. Often they say that Oliver Lodge was the true inventor, with his variable-inductor turning. Yet the courts agree that "radio," in modern terms, is nothing but the "four-circuit" device. It's other name is Tesla's Oscillator, today called the "Tesla Coil." Four circuits: a transmitter composed of two high-frequency resonators, plus an identical device in the receiver. Today's engineers realize that Tesla Coils allow radios to include an "antenna tuner," which the original Marconi patents lacked. Tesla could broadcast kilowatts of EM, regardless of antenna size, because his variable transformer was an impedance matcher (a Z-match circuit, today called Transmatch,) compensating for too-small antennas operated at too-low frequencies. Marconi did use his own patent to broadcast 30 miles. Many other inventors had done similar things. But only Tesla's breakthrough "four-circuit" invention let radio go worldwide, replacing hundreds of miles of telegraph lines and undersea cables, crossing oceans and linking all ships to shore-based radio stations. Tesla did that. Yet all textbooks everywhere celebrate Marconi for his great accomplishment. The entire breakthrough actually came from Hertz, and from Tesla, with Marconi playing zero scientific and inventive role. Marconi did convince some investors to pay for an "insane impossible, crazy" company claiming to build "wireless broadcast devices" which could reach a worldwide audience. Nobody believed in such obvious garbage. Science had already declared it impossible, and the public sneered and laughed, if they ever heard about it. Hence, no Tesla Wardenclyffe transmitter project was ever completed or turned on. To have radio, we needed Hertz the physicist, Tesla the inventor, and Marconi the con-artist trickster, whose silver tongue talked some rich investors out of millions of dollars, for a project as foolish as investing in lead-into-gold schemes, or financial deals selling the Brooklyn Bridge ...yet Radio turned out to actually be genuine, even though it took a dishonest schemer to pull in the funds needed to make it real. William Preece, head of the UK radio project with Marconi, apparently kicked Marconi out because Marconi, while he paid for the Lodge patent, refused to pay any license fees to Tesla, and instead simply stole Tesla's technology. (Preece and Marconi had run some range tests, which showed that Marconi's transmitter was nearly worthless, when compared to Tesla's.) Preece later refused to believe that Marconi had even transmitted across the Atlantic, saying that "S" and "R" in Morse code was just the sound of common radio static. Preece was proved correct, when on a Marconi anniversary, the original feat was attempted, and didn't work. It proved impossible ...UNLESS accomplished at night, with the e-layer altered from lack of solar input. Marconi lied to everyone, and Preece called him on the BS. (But within about a year, Marconi did get his system working, and did transmit across the Atlantic. But Tesla's project had already been financially ruined by Marconi's dishonest announcement of successful bridging the ocean ...via use of stolen Tesla transmitter technology.) Here below is a 1000-watt Marconi station, including a Tesla Coil, even including Tesla's "Extra Coil." Marconi re-named Tesla's inventions, so Tesla Coils became "Oscillation Transformers," and the "extra Coil" became "antenna load coil." see amasci.com/graphics/Marconi1KW.jpg PS Spark-gap transmitters are no more lllegal than, say, camera flashes, arc-welders, even brush-motors. What's illegal is TRANSMITTING with a spark-gap unit, meaning, hooking it up to a properly-designed professional antenna system, and to a ground. If no halfwave dipole or quarterwave vert. tower, then no transmissions. Faraday shields are only useful if you're in an apartment building, with people trying to use AM radios ten yards away in the neighbor's apt. (Same problem happens with strobe units, welders, and dirty motor brushes, which wipe out AM radio reception within, what, say fifty feet max?

[@BlueprintScience]

A wonderful and wholesome video as always, Jay! And might I add that your transmitter looks very aesthetically pleasing. I can't wait to see what is next for Plasma Channel!

[@PlasmaChannel]

Blueprint- you will always be a friend of Plasma Channel. Thank you for introducing me to radio

[@nothingelsetolose7661]

@@PlasmaChannel is it possible to focus the electromagnetic waves of a radio as to not be broadcast in every direction but only in a certain cone or sector, or could it be so focused as like a a laser beam? and if possible how would you go about that?

[@nothingelsetolose7661]

is it possible to focus the electromagnetic waves of a radio as to not be broadcast in every direction but only in a certain cone or sector, or could it be so focused as like a a laser beam? and if possible how would you go about that?

[@briankent1509]

As a radio engineer the antenna length comes down to frequency and resonance. At 1khz the wave length is far greater than at 17kHz, hence a shorter antenna. At 1khz the RF wavelength is 984000 feet, not 5. Also an RF radio wave is not an electromagnetic wave as is prominently written in many books these days in error, it is an electrostatic wave. Imagine walking past a radio station transmitting 2Kw of power, bits of metal from all around would be flying through the air and attaching itself to the antenna until you couldn't actually see the thing until you shut down the Tx. 'Electrostatic'.

[@SudhirKumar-bq4xz]

I'm a electrical engineering student from India, this one is a best experimental method for verification of Maxwell's equation, And i really learned something new today, Since spark gap and high voltage is used a low resistance plasma path establishes, because of this a ionized particle jumps from one electrode to other. Since particles are electrically charged a electric field establishes and since those will move from one side to other side magnetic field also establishes and combination of these two field results in radio wave (because of low level energy density) and it is transmitted by antenna as oscillating wave in space/atmosphere . And in simple words Maxwell's theoretical statement or mathematical equation states that combination of electric and magnetic field which are in different dimensions gives electromagnetic wave and spark gap produces radio wave & radio wave is also a electromagnetic wave. Thus this experiment experimentally verifies Maxwell's theory. And it is beautifully demonstrated and explained by both of you..... But i have a doubt in transmission, since overall capacitance of the system is in pF range and inductance is also low, thus energy released or consumed or simply stored by reactive elements are less under resonance also Q factor of coil is too low so amplitude of generated time varying signal signal reaches to zero within nano or in micro seconds so what can i expect at the receiving end ? Noise or Original signal or Distorted version of original signal or pulses (if i neglect medium loss) ? But this simple circuit has better efficiency with consideration with distance, because Poynting theorem states that power delivered by electromagnetic wave is given by P=E×H (in vector form), now if i consider it's units E has V/m and H has A/m thus we have W/m² in other words distance and power has inverse proportion, and even for long distance this circuit is a winner (Along with medium loss)...!! Thank you sir, this is a grate educational video..... I joined this family when it has around 4.3k subscribers but now its 27k..... So this family is growing day by day......

[@PlasmaChannel]

I really appreciate your analysis of radio. Wonderful job, yes. Thank you for your kind words towards Dayton and I. Glad you are a part of #plasmanation

[@SudhirKumar-bq4xz]

Sir please make video on atmospheric electricity.......

[@nilcineizanelato383]

Eu sou engenheiro quimico formado no Brasil, otima explicacao

[@alangolab6657]

i was look for this

[@alandeng027]

very good

[@Robothut]

The 1950's Radicon robot toy used this same spark gap transmitter and cohere tube to function. Great video as always.

[@Zenodilodon]

Good Job! This was a pretty well put together project and video.

[@PlasmaChannel]

Thank you!

[@sFeral]

@@PlasmaChannel Nice

[@JarredRandom]

Time to start my pirate radio station playing only the finest pirated music downloaded from a pirated version of Windows.

[@HannoBehrens]

Hill3 „alphabeta“ HHBIZ GPVUL RMUXK YNQYW TMGYW WLXSN JZSGT CMHNH PTFQJ BKRVG MVEEL GWGNS TGJCE FRZMB NNHFE OJDAU X

[@dickeyjoe4237]

The device is a super indication of the foundation of radio community But now Electronic is use to drive Radio signals into different frequencies. I like your channel Man

[@weazeldark3983]

Use this and u be pirating all the radio It basically jams all reception to this transmission pretty much

[@GroverCleveland43]

Your video on this subject was so very well done. I've played with spark gap and it was great fun. Years ago I was demonstrating spark gap (illegal but short lived) to a ham club. I sent a message to my friend in his car and he copied just fine. Folks were impressed (and so was I).

[@Graeme_Lastname]

Did this when I was a kid. Used a 50KV xray transformer and long and high antenna. Road my bike away for a few miles hearing it all the way. Good fun.

[@PlasmaChannel]

That's really cool. Must have been an awesome feeling.

[@Francois_Dupont]

the local HAMs must have loved you!

[@Graeme_Lastname]

@@PlasmaChannel It was. especially when I got myself connected across the output. 🤣

[@Graeme_Lastname]

@@Francois_Dupont Only did it a small number of times. Didn't even know there was such a thing as hams. I was quite young. 😊

[@Francois_Dupont]

@@Graeme_Lastname no problem, apparently before the 1950~ most lawnmowers, cars and motorcycle didnt even have a resistor in the spark plug. it would cause each of those motors to be a little spark-gap transmitter. research this if you want, it is interesting!

[@Wildbane]

ILLEGAL? Hahaha, now I want to do it even more. Thank you!!!

[@PlasmaChannel]

Let the records state I did not ENCOURAGE you! Haha

[@ChickenPermissionOG]

@@PlasmaChannel What if it is an emergency and you need to broadcast to get saved.

[@Benetekt]

@@ChickenPermissionOG I'm no lawyer, but I'm pretty sure, that you won't be punished if you transmit on radio frequencys to help you survive

[@erlendse]

@@ChickenPermissionOG I know that is a law exception for that in Norway, and likely elsewhere too!

[@indrajitR]

use discone or cage antenna to accomodate large band-width. see many working transmitters and receiver , ham radio at vu3inj.blogspot.com

[@benderamp]

thank you very much for this video

[@carmelpule8493]

I liked that part when he said, " Before I built this spark gap transmitter, I did not have any appreciation of radio but now that I built it, that has all changed!" I have appreciated radio since 80 years ago and "played about as a profession " with electromagnetic fields ever since. Just because they are silent and invisible few people know about their detail as normally people are only conscious of their own instincts and what they can handle with their own human senses. That is where religion and art comes in as they are based on emotions and not any logical thinking. People can make more money by catering directly for people's emotions and not for giving them the basic necessities of life. What is more in delivering emotions to others there is nothing to guarantee asn people accept that. Try and manufacture and sell to people some useful tangible facility for their own home comfort and they want it cheap and guaranteed for a long time! The beauty of getting to know electromagnetic fields and other silent and invisible powers, one realises how foolish one is to just get to know only what the human sensors can detect. ALL THAT HELPS US LIVE A BETTER LIFE IS ALL DUE TO ELECTROMAGNETIC FIELDS. as they can take the form of mass and energy, as Albert Einstein put it so nicely , E= mc^2. . Even God is an Electromagnet field energy who can transfer from Energy to mass and back again, There is lot to chew on to taste the contents of that fact! . Sir, congratulations for seeing "the light "

[@turmoil9]

Fascinating. By far your best video so far

[@PlasmaChannel]

THANK YOU

[@jessenelson8106]

When I was a little kid I built one for the science fair out of a battery, a wire, a nail, and a file. Scrape the nail against the file, sparks fly, and loud static comes out of all the radio. I came up with the idea 100% on my own, with no help or knowledge whatsoever, just playing around. Also built a light meter out of an led, a wire, and a voltmeter.

[@igamse]

I really like how you are trying new ideas in your videos (in editing, explaining...), it just make me love your constant more :)

[@PlasmaChannel]

Thank you igamse. I try to incorporate new editing techniques when I can!

[@volturnu]

That coherer thing I didn't know. Always learning... thanks Jay.

[@PlasmaChannel]

It was a learning experience for me as well. Glad you enjoyed the video. Cheers.

[@tarun.starboy]

I didn't know that iron filings were used to detect radio signals. There's always something new that I get to learn about from your videos. The fact that you had to remove your video for some copyright issue made me angry. That company should feel honoured that their footage was used in plasma channel. I know it's just business for them but still I feel so angry about it.

[@PlasmaChannel]

Yeah, their video was labeled Creative Commons (free to use). Then I was informed I had to pay them $450 if I posted it. No worries though, it was their clip and their property. I understand. Video still rocked, right?!

[@tarun.starboy]

@@PlasmaChannel Yeah :)

[@ryanmalin]

Awesome video as always Jay!

[@PlasmaChannel]

Woo! Glad you enjoyed

[@gilbondfac]

Yes that's it !! bravo j'ai fait l'expérience du Coherer de Marconi il y a plusieurs annéess..., great job guys !! ;-)

[@eventseen7317]

I enjoyed watching this so much! Thank you for all the effort, the outcome was a really beautiful video!

[@PlasmaChannel]

Thanks so much! #plasmanation

[@goldassayer93555]

Thanks J i have always wondered how those spark gap radios in the old movies worked.

[@gorkskoal9315]

pretty well from looks.

[@forward3dprinting796]

Incredible

[@Surajit_Basak]

Your videos are always awesome 😊

[@PlasmaChannel]

Thank you!

[@Surajit_Basak]

Thought I'm a student of biology but really i should thank you as your channel gives very Good knowledge of physics of electricity... I have collected much knowledge in this field from your videos and channel.. thank you lot again.. from India.

[@jmd1743]

Very cool to see you do a whole setup.

[@sortofsmarter]

Great co-op and very well done. You two work well with each other. And I appreciate your classy appearance, its refreshing to see that not all nerds or geeks are messy or disorganized. Very informative video, I learned more in 15 minutes than weeks in school..lol

[@PlasmaChannel]

We’re very pleased to hear you enjoyed the video. Did you happen to check out Dayton’s video? His is drastically different and quite entertaining.

[@sortofsmarter]

@@PlasmaChannel Oh yes. I'm already subscribed and have been for a while...when he did 100# of thermite..lol

[@mhector1532]

This channel is kind of addictive. My grandfather was from Croatia and he really admired Tesla (yes, Serbian, I know, but somehow despite the alphabet difference still considered one and the same). So I grew up on Tesla. Cool stuff that you have here!

[@rezatavan5048]

Excellent ❤❤❤

[@BACTAonPC]

Blueprint! Love to see you collab with him, very underrated KZbinr!

[@PlasmaChannel]

Yeah Dayton is really cool!

[@gorkskoal9315]

My Pa was a Ham radio operator, and still has his orginal kit including the, now, obscure 'world band' transmitter and reciever.

[@3DLearningResources]

Thanks Jay

[@PlasmaChannel]

Thank you for watching

[@markthompson4099]

I liked the information about how electrons moving up the metal rod is what induces magnetic flux or radio waves. Thanks

[@MrCcarter7]

Great video Jay. Thanks for posting and keep up the cool videos!

[@PlasmaChannel]

Chris, I will certainly keep up the videos as long as subscribers such as yourself exist!

[@scarakus]

Wow I like that coherer thing, say good by to those outside sidewalk light's solar panel & battery, just tap your spark gap in the evening to turn them on.

[@anjkovo2138]

FASCINATING PRESENTATION

[@nigel-matthews]

Is there a video on making that 555 timer circuit in the box? It's the cleanest one I've seen. I know Blueprint has a video on it, but I think his only had one potentiometer.

[@bcikablam3578]

3:30 *and he had a sparkit wimshurst machine illuminated by an electric light. oh and a video camera. and a classy mustache.*

[@PlasmaChannel]

Luckily, at that time all those things had been invented 🤔

[@jaamacdagaale5145]

this was amazing knowledge thank you guys

[@PlasmaChannel]

Glad you enjoyed!

[@DineshKumarWickramasinghe]

Again awesome video. Thank you.

[@Bobal27]

The smartphone sitting in my pocket? Then what am I watching you on?

[@zvpunry1971]

If you don't want to ruin your eyes, you watch it on a big screen connected to some computer. ;)

[@PlasmaChannel]

Shoot. Well, there goes my ENTIRE video.

[@Bobal27]

Plasma Channel Lol, you rock, btw, I just wanted to make you laugh there. Hope I did :) Also, zvpunry, not all of us have more than just our phones. I don’t even have a tv anymore, since I just use my phone anyway.

[@1833-j4g]

9:30 Flybacks are quite a bit different. They use high frequency AC from a ZVS circuit, while induction coils use DC that is oscillated by an interrupter.

[@mikeschroedel406]

You just reinvented a spark plug. Good video as always. Would love to see more longer videos like this. Stay classy.

[@mikeschroedel406]

IDEA! Replace the spark gap with a modified spark plug and see what happens.

[@PlasmaChannel]

Brilliant idea. I have a new video idea based off this comment! Thanks!

[@mikeschroedel406]

@@PlasmaChannel That's what I'm here for. :)

[@tcmyoda]

Ok, good video, just a few points. 1. Many oscillators even today have a spark gap, albeit one that is enclosed by a low voltage neon lamp. Tesla came up with a method of using a magnet to disperse the arc as soon as it had formed and reduce the extra emf, not to mention using capacitors and inductors to tune the resonant frequency. 2. A resonant antenna should be 1/4 wavelength (1/3 is pretty good too, but not ideal). If you look at a single wavelength on an oscilloscope, 1/2 and a full wavelength are the points where the voltage goes back to zero. 1/4, 3/4, and odd multiples of the same are the pints where the voltage peaks. 3. FCC rules allow for experimentation and emergencies as reasons for using otherwise illegal methods.

[@PlasmaChannel]

Thanks for these points. Admittedly I am still learning about FCC regs.

[@torres_arriostradas]

my grandfather was born in the year 1900, he learned electronically by correspondence, and he learned to build his radios, on one occasion he showed me a radio that worked with a stone called galenita, and you could listen to stations from many parts of the world, We got to listen to radio stations from China !!!! , your videos are very good! Congratulations!!!

[@jaroddavidson5748]

Galenite, kind of like lead crystal?

[@johnbrandolini2915]

The mineral is called galena and is comprised mainly of lead sulfide with trace impurities of silver, bismuth &c. It was used in what was euphemistically called a "Cat's Whisker" receiver. Without going into much detail it consisted of a long wire antenna, tuneable coil, the galena crystal, head phones and a ground. You'd position the "cat's whisker" on a "sweet spot" on the crystal which would then enable detection of an AM signal which was fed to the headphones. Back in the 60s a lot of novelty shops sold self powered radios which were essentially the same as the galena variety except for the fact that it used a germanium diode to detect a signal. I had one as a kid; however, with the 3 foot antenna wire it had, the best you could get was a really strong signal from WCBS or WABC. (I grew up in the Bronx.) I learned electronics from a 1963 copy of the ARRL Radio Amateurs Handbook which I still have in my collection and eventually went on to college for a BSEE. If you want to know more about this primitive receiver check out www.electronics-notes.com/articles/history/radio-receivers/cats-whisker-crystal-radios-sets.php.

[@torres_arriostradas]

@@johnbrandolini2915 great!!!

[@CodyAardema]

Here from Blueprint. Good stuff. Subbed!

[@PlasmaChannel]

Welcome to #plasmanation my friend!

[@Plasma.Prince]

11:06 How do you find the wavelength?

[@MsCpktnwt]

Nice work sir

[@PlasmaChannel]

Thank you

[@premrajjadhav02]

Here we have to tap that receiver every time but how it was done at that time?I dont think they used to tap manually

[@hemanth561]

Make a video on how to make a fm transmitter

[@PlasmaChannel]

Great idea..... I smell another FCC application brewing

[@JennyEverywhere]

@@PlasmaChannel Become a radio amateur. Then you can do a lot of those experiments without asking permission each time. You'd still be restricted from using spark, as it's really a horrible method of transmitting, but it opens up huge opportunities for learning. www.arrl.org/

[@n.randall6152]

Knock, knock, knock.. Looks out through window.. IT'S THE 5 0!!!

[@pratyush2331raj]

Actually, COHERER was first discovered by Sir J. C. Bose. which was latter used by Marconi in his radio detector. ~PRJ

[@Plasma.Prince]

1:31 Alright now. I like you blueprint, but honestly Plasma Channel has taught me a lot so yeah.

[@LeonardCaldwell]

Subbed from Blueprint!

[@PlasmaChannel]

Welcome to #plasmanation

[@timovneerden]

The antenna: half the wave-length or quarter of the wave-length? I’ve learned that it has to be 1/4 of the wave-length. But I guess that there are some other things to consider. When I was like 10 years-old, I got 2 toy walkie-talkies, with a 10 cm (4 inch) antenna. It worked for ~50 meters (150 ft). I opened it, attached a copper wire and a bamboo stick of 1 meter (3 ft), and I got it work for over 2 km (1.5 mile). It was quite amazing!

[@BlueprintScience]

I've got this. The most common type of antenna is a dipole in which the positive and negative conductors point away from each other. The total length of the dipole (both conductors) is typically 1/2 wavelength. Monopole antennas can be thought of as half of a dipole: 1/4 length. But this assumes a ground plane. Since we don't have one of those, it makes sense to capture a full 1/2 wavelength on our aerial instead. But honestly, it can be any multiple of 1/4 wavelength. Also popular are 3/4 wavelength antennas.

[@erikmuller9222]

Great Video😀

[@PlasmaChannel]

Thanks!

[@SharkRangler]

Could you eliminate the Morris Code switch, and replace with a small speaker or mic to transmit voice?

[@drstrangelove09]

so the ground is the plate on the bottom and it's grounded to the concrete.... and then the radio was also grounded to the concrete...? would it have worked using dipole antennas and no grounds?

[@spandandutta2485]

Learned new things.....great job....keep it up sir...😎😎

[@PlasmaChannel]

Thanks!

[@andrewlues2003]

Is it possible to send energy for charging devices through that radio signal?

[@lochinvar00465]

Marconi changed the detector to a mechanical/magnetic detector. THIS is the detector used on the Titanic but curiously has received little mention.Owing to the ingenious design I am surprised to find that it is relatively unknown.

[@mac4223]

Never in my life did i ever imagine i would be fangirling over a cameo from a physics channel

[@MrJeep75]

Very awesome and fascinating

[@jacobkaltz1958]

Longest intro ever I like the video nice work

[@김한솔-f9d]

(Subaru)I opend up my transformer. And it has 3 whires on the middle and two tn the side. What should i do?

[@kellyhughes5674]

Can we use this to charge batteries from long distance like 50ft?

[@podboq2]

@ 13:00 that mess on the ceiling of the garage freaked me out - I hope I was the only one.

[@deepakjoshi823]

In 1895 Indian scientist 'Jagdish Chandra Bose' detected radio waves in Calcutta and demonstrated before Governor of Bengal It was during British raj. It was way before Marconi. Bose is known as the father of wireless telecommunication. He had invented the Mercury Coherer, a radio wave receiver that was used by Guglielmo Marconi to build an operational two-way radio.

[@jacksparrow9532]

Hello sir! Very nice video! May I ask you some questions? I am a beginner but I need these concept for my college project. 1. On 07:54 It says that any electrical arc will create wideband frequency means all over the frequency spectrum. How do I know that? Is there any equation for that? Or it's based on theory or experiment? 2. Don't you have to shield your spark gap to reduce the noise? Thanks! I hope you understand my silly english

[@bradcol9829]

Does it interfere with every type of radio wave for example WiFi and Bluetooth?

[@PlasmaChannel]

I found it did not interfere with my WiFi at my location, nor my Bluetooth.

[@hokep61]

Generally speaking.....the spark gap transmitter generates a amplitude modulated (AM) signal. Back in the 50's, my friends and I, would build spark gap transmitters for code transmission. Worked well, but would wipe out area AM radio reception. And yes, it is illegal in the US. Possible exception would be for emergency communications. But thats pretty much useless.....most would just bitch about the interference and not recognize or be able to copy morse code. Keep in mind...Jay's experiment was done inside a Faraday cage......no nasty AM signals escaped....

[@Jeffrey314159]

11:16 Tesla Marconi antennas use multiples of Quarter Wavelength princple, Hertzian antennas use multiples of Half Wavelengths

[@fernandocasas3291]

So how many " other end of zener diodes" are there. Am I missing something? Connect the power source to what?

[@Solarneutrinostar]

Sweet video.

[@PlasmaChannel]

Thank you

[@alessandrodalterio7556]

Your channel is amazing very high quality video !

[@PlasmaChannel]

Thank you so much

[@brendanjohn1014]

Super interesting, I have built a transmitter and receiver to wirelessly light bulbs. Transmitter is a simple 3V Tesla coil and the receiving is a coil + diode.

[@davidfine7066]

Outstanding J"

[@PlasmaChannel]

Thanks david!

[@davidfine7066]

@@PlasmaChannel Thanks Ajent J apprieciate that! Stay Klassick!

[@mrfoodarama]

Coming over from Blueprint , glad to find your channel!

[@PlasmaChannel]

Cheers! Welcome to Plasma Channel.

[@Bogibogatinov]

How can i make it transmit signal in 1 or 2 km radius?

[@Tassie-Devil]

I'd like to see a working model (however small) where a sympathetic spark is induced in a simple loop of wire a few feet away. Not electromagnetic inductance, but a tuned RF spark induction. Feasible?

[@PlasmaChannel]

definitely feasible. I can look into this.

[@Tassie-Devil]

@@PlasmaChannel MAGIC! Looking forward to it! Thanks for the reply.

[@ozymandiasking173]

can the range of the transmission be increased by adding a capacitor paralell to the spark gap?

[@PlasmaChannel]

It likely could, but FCC was not a fan of me experimenting any further!

[@ozymandiasking173]

@@PlasmaChannel The only bad 'F' word in my vocabulary is FCC. lol thanks for the reply i wasnt sure if that would have any affect or not on the strength of the signal. Its already pretty darn impressive how well your transmitter works. Ive bedn itchin to build one after watching this vid. Thanks for posting. love your channel.

[@glizzy_missles]

This needs to be in trending!

[@PlasmaChannel]

Thank you. Help get It there, share this video on all your social media!

[@luscent3737]

You do realize that Tesla built upon this principle to create this hairpin circuit which then later used to transmit wireless electricity creating longitudal over long distances?

[@shokatkhorma8890]

Very interesting. Looking to know the receiver circuit diagram

[@acompletelynormalhuman6392]

3:24 I don't know if they had windshirts machines back then but they definitely didn't have that model of wimshurst machine

[@jobin100]

Great video mate..

[@PlasmaChannel]

Cheers, and greetings from Seattle.

[@poohbears1995]

I love it thank you so much.

[@PlasmaChannel]

glad you enjoyed!

[@Graeme_Lastname]

Please explain what concrete has got to do with RF shielding. ;)

[@PlasmaChannel]

Typical AM radio frequencies have problems passing through thick, steel-reinforced concrete. FM has an easier time passing through, though is still hampered.

[@Graeme_Lastname]

@@PlasmaChannel That's got a lot more to do with the reinforcing that the concrete. ;)

[@usedcommerce7134]

Do you have any circuit diagram for the build in pdf format? How do you connect this to the 555 timer circuit are you using a mosfet?

[@gorkskoal9315]

I built a crystal radio reciever from kit. Which in a weird way lead me to my interest in mushrooms and...molds[long story]. TLDR: I saved to mail order a kit. This was back in the day when we used VHS, and didn't have internet, not really. And waaaaaaaaaaaay before Amazon. For what ever reason the kit showed up smelling musking. I don't know why, but I thought watching something grown around the packaging was one of the coolest things ever. A second kit showed up. With some help from fam, built a small crystal raideo reciver. But was just fascinated by the weird stuff growing on the box of the first kit. That in a [super long story and about way] got me regional sciencefare award: a deep dive into...molds! Fun fact: some fungus are cool little energy farms you can use as a form of power. In school I..almost made super, suuuuuuuuuper small little speaker to attach to a radio I had.

[@jacobkransteiner6519]

Awesome Video

[@PlasmaChannel]

Thank you

[@rpetresco]

Great video. Would it be too difficult to actually replicate the receiver metalic ring that show a spark every time the transmitter is powered on ?

[@PlasmaChannel]

That would likely be a very simple experiment. Me being a perfectionist, I didn’t have the time to setup and film that part of the experiment

[@MrXfyre]

Talking about old technology... Starting with a redundant question... What (Besides aluminum and Iron Oxide) brought the Hindenburg down? Yes, the chains hanging from it meeting ground. That got me thinking,... use a helium balloon with a wire in relatively high altitude ... About the Hight of Tesla's (Collector) coil. I know you are curious.

[@ramishawwa5661]

Can you please test build/test a Tripod coherer would be great if you can confirm it doesn't require any battery power to generate its current!

[@mihaionofrei1116]

How long will the coherer light up the LED if not taped?

[@sef2273]

So when I drove a company truck, the radio when set to a certain station would pick up a signal whenever I accelerated. An increasing whine noise to a decreasing whine . This was like 7 years ago so I don’t know the station probably was AM

[@PlasmaChannel]

You just hinted at an episode I have planned, two episodes from now!

[@codeaccount2434]

how you can transmit voice like they did in past?

[@ramishawwa5661]

I'm really intrigued by the coherent radio detector was wondering if its possible to use it to also detect signal strength, how does it respond with regards to different frequencies?

[@ElPsyCongroo.]

A little late, but i think you can not use it to detect strength or frequencies, I have been trying to do so but It only works as a switch, it can change its resistance sometimes but I am pretty sure it is just an error in my design and not something that you can actually use

[@Arunrajore]

I used the same high voltage transmitter for making witricity Its wireless electricity transmission

[@mainerockflour3462]

That was brilliant! No pun intended. Are you suggesting that a typical transformer generates an RF signal that in turn, generates electrical power?

[@electrorunnercrane]

Amazing 🎃

[@PlasmaChannel]

Thank you

[@electrorunnercrane]

As I've made van-de-Graff generator by your tutorial I'll try to make this one 😉 THANK YOU for this tutorial ,It's so cool😍

[@bjl1000]

Great video guys. So I guess I'll wire this up and jam my neighbors drone.

[@mikenz6829]

well you have not only showed me things I didn't full understand in a way I can but also how some have forgotten where our modern tech comes from.

[@PlasmaChannel]

People take for granted our current tech, all the time. We come from humble beginnings.

[@chrisbarnes3864]

I've always wondered if you could use a strong enough or numerous enough spark gaps to work as a radio jammer. I live way out in the woods so I might have to experiment.... Don't tell the fcc I'm doing this.