Vintage Technology: Electronics-- BASIC RADIO CIRCUITRY, Learn How Radio Works, 1971 (History)

[@joewoodchuck3824]

I'm from this era. We learned more about tubes than transistors in the 60's when I went to electronics school. Among many other things we had to build a 5 tube superhet AM receiver from scratch. Not a kit. The IF strip even had to be aligned. This was preceded by my own electronics projects starting around age 10 with crystal receivers, then later regenerative receivers and various test equipment. I'm retired now, but I still build electronics projects and I'm still a ham radio operator. There's always been an element of magic for the transmission and reception of radio signals to me. Don't scoff thinking about cell phones. Before the phone in your pocket is anything else such as being tied to the phone system, it's still a transmitter and receiver. Without that it's nothing. Thanks for posting. The younger generations typically have no clue how any of the advanced devices they use every day work. Many didn't even live in the time when mobile phones first came into use ~30 years ago. N1KHB

[@ComputerHistoryArchivesProject]

Hi @joewoodchuck3824, thank you for the very thoughtful and insightful response! You have an in-depth, hands-on experience with radio electronics that is (seemingly) not a very wide-spread skill in our younger generations(s) today. It it too bad they miss they excitement of creating a tool that can capture and translate EM signals and make sense out of them. There is a great satisfaction in making your own electronics tools or toys, that is missed when one can buy (for a mere $1,000) a hand-held radio, camera, phone, etc. pre-made by someone else. Little bits of important tech knowledge is lost over the years, as one generation takes over from the last. Progress is great, but history is important to give us perspective. Your comment brings back memories itself. As a kid, I used to take apart 1950's TVs that people tossed out in favor of the "new" 1960's models. Thanks again for the great feedback! Hope you will explore our other video offerings too. Keep well. ~ Victor, CHAP

[@joewoodchuck3824]

@@ComputerHistoryArchivesProject Each innovation seems to displace us further from the origins. A big change is how knobs and buttons are being replaced by menus which can be very interesting from a design standpoint, but at the same time make steps and functions more difficult and with more thought needed to perform them in practice than before. Oh well.

[@ComputerHistoryArchivesProject]

Yes, good point...

[@alejandrovidal1607]

I learned electronics in the 90s and one of my teachers, an old engineer, very old one!😄, teach me vacuum tubes and I was like: WTF!!! now i'm a HAM and thanks to this teacher I made a lot of things with tubes.

[@chandrakantbentur6966]

Yes sir, you are right,

[@ScottPlude]

I love vintage content like this. Our society has advanced to the point that nobody knows how anything works anymore. I have never built a basic radio transmitter or receiver. I have never built a microprocessor. There are lots of crude devices that I would like to build before I die. I hope to involve others in the process as well. Making stuff is so rewarding!

[@ComputerHistoryArchivesProject]

Hi @ScottPlude, thank you for the great comment. Excellent points! Making one's own tech tools and items is very rewarding, something younger folks often miss out on.

[@buffplums]

I too would live to work with other like minded people… I have worked for over 40 years in my proffesional life in electronic engineering in radio, communications digital and radar systems as a maintainer, servicing and repair… I’ve a,so done tache Al training too and it makes me sad as so many want to learn and Ai get all frustrated seeing peoples lack of knowledge with no one to teach them… I would love to volunteer my time to teach and train people to get started in electronics like the ay I stared back innthe 70s as a boy taking things to bits and making things from old bits and pieces I scavenged from the TV repair shop nearby.

[@BlackPill-pu4vi]

Unfortunately, the trash on radio is so awful that it becomes a moot point to understand how to build a basic AM or FM radio.

[@rybaluc]

Breaking point about having generic knowledge of how the things work in the world was about 120 years ago. It is impossible to know everything today due a technology complexity. Not mentioned complexity of interconnected different societies trough telecommunication advancements. Most complex man made machines are now cpus and software. I barely know how various parts are implemented and i am working in the field.

[@buffplums]

@@BlackPill-pu4vi that’s true but think about what I’d say there was a world disaster and the internet is destroyed… it would be good if people break out backup comms systems.

[@certuv]

Thank you for posting, reminds of my younger days ,I am coming up to 84.

[@ComputerHistoryArchivesProject]

Hi @certuv, thanks very much for the great feedback! Glad you found our channel and hope you will continue to explore our vintage offerings! Keep well! ~ Victor, CHAP

[@josephbeno3053]

when i was 10 i built a kit radio like that one 1970, I bought it from Allied Electronics. It worked. Later Allied was bought out Bv Tandy. They were a leather manufacturer.

[@Bankable2790]

It’s really cool to read old timer’s comments like that. It’s a little comforting to know there are hobbies we can keep into our old age.

[@geralderdek282]

In the early 60s,my elderly next door neighbor gave me a cats whisker crystal and told me to ask my dad to build a radio with it. He did and ran the antennae wire from my bedroom window to the garage roof,a distance of a few hundred feet. Wawz zarapath NJ was a religious station only a few miles away and came in the loudest. Wor NY city was second loudest. The fact that no batteries were required was great and it started a life long love of radio for me.

[@ComputerHistoryArchivesProject]

Hi @geralderdek282, that is a great story. It is a powerful way to demonstrate how radio wave energy, crystal vibrations and the right combination of wires brings to life the magic of invisible signals in the "air." Thank you for sharing that story!

[@andyperkins8620]

I wish my brother could have watched this when we were kids. Then he may not have taken apart the radio we got for Christmas. Or maybe able to reassemble it.😂

[@chuckmaddison2924]

Sounds familiar. Mom's wedding present went on the fire, the wood case did 😊

[@marinvidovic763]

Same disaster. My grandmother's RIZ Tube radio. ... Lucky me , My parents had purchased a newer model pf a radio , ... so nobody ever noticed my secret E- explorations. Next project was 20m long wire anntena and A Cristal radio... that WORKED like crazy ! My secret listening under the blanket , at the midnight to " Juke Box rock& roll programs " ... 1974... He he ... Like yesterday !!!!

[@ComputerHistoryArchivesProject]

Hi @marinvidovic763, nice recall. Thank you!

[@FLORIDIANMILLIONAIRE]

What does he do now ?

[@frankowalker4662]

What a great film, glad you found and restored it. I had to teach myself all this from the mid 70's onwards, electronics was never taught in any of my schools.

[@ComputerHistoryArchivesProject]

Hi @frankowalker4662, glad you enjoyed this. Thanks very much for the positive feedback ! ~ Victor

[@jozefbubez6116]

These days, there are many people who don't know what they are missing! As a teenager in the early 1960s, I and a few of my friends began making simple radios out of junk being fascinated by how a signal can pass over even empty space and carry information. Those were the days! However, even then I think this was a very minority following one lad making the observation that out of a school of 500 boys, only two showed an interest in radio! At age 74, it pains me to see how many people are 'glued' to their mobile phones showing little interest in anything else and clueless as to how all this works!

[@ComputerHistoryArchivesProject]

Hi @jozefbubez6116, you make some interesting points! Well said. ~ thank you for the feedback! ~ VK

[@johnburns6422]

Brilliant basic electronics Big changes today still a frequency is a frequency , Thanks for sharing the video .

[@ComputerHistoryArchivesProject]

Hi @johnburns6422, you are most welcome. Thank you for the feedback!~

[@bblod4896]

I remember these films 😊 Thanks CHAP for resurrecting these old films.

[@ComputerHistoryArchivesProject]

Hi @bblod4896, surprising how much one can still learn from these vintage training films. Thanks for the positive feedback, glad yo enjoyed it. ~ Victor @bblod4896

[@XanthusBarnabas]

Indeed, brought back memories; and yet, much easier to watch without the projector's noise 📽 trying to compete with the audio 🔉🙃🙃

[@afnDavid]

I went to a private school and they had those sorts of skill teaching curriculum. Electronics, Computers, Carpentry, auto-mechanic, masonry, Lathes, metal working. Where my previous 8 yrs in a public school (government indoctrination center) was mostly a waste of time.

[@ComputerHistoryArchivesProject]

Interesting. The private school definitely sounded like it offered much more potential.

[@tecnik3253]

The electronics magic! Me encantei com esta magia aos 14 anos e até hoje, com 72 a pratico, é uma verdadeira cachaça, viciante, empolgante!

[@joesauer8068]

When RadioShack opened in Long Beach California in 1964 my dad took me there and bought me a crystal radio kit. I was fascinated! I went on to become an electrical engineer.

[@abdultairu]

I know for a fact that I destroyed two of my late father's tube radios because of my zeal to understand how the thing worked and seeing this video reminded me of the stuffs I removed (and never know how to place them back) from those radios. I credited my ability today to create circuit boards to those costly (my father's pocket) but adventurous days. Following my rendezvous with my father tube radios, and when FM radios became the latest game in town, I quickly learned that whatever can receive FM signal, can transmit it. I successfully converted my first transistor radio into an FM transmitter that I use to broadcast music in my college hall. I so much enjoyed watching this video, and thank you very much for binging me some nice memories looking at the tubes, the point to point wire connection, the rudimentary PCB substrate and who will forget those glorious plate capacitors.

[@ComputerHistoryArchivesProject]

Greetings @abdultairu, thank you very much for sharing a fascinating story. It must have been an exciting event to convert your first transistor radio into an FM transmitter! Great memories. Glad you enjoyed this video look back! Hope you will explore some of our other vintage technology videos as well. ~ VK, CHAP

[@allenjenkinson7608]

I'll never forget the feeling when my first crystal set worked, from that I went on to become senior electrical engineer with a major manufacturer of forklift trucks..

[@ComputerHistoryArchivesProject]

Very cool!

[@Moonlightshadow-lq4fr]

One of the first electric "cars" but far safer :)

[@little_britain]

Oh wow - this was a Toronto Technical School film! Kudos. No wonder they knew to mention the Canadian inventors involved in pioneering radio.

[@ComputerHistoryArchivesProject]

Yes, it was good to have them mentioned!

[@bladder1010]

When I heard the narrator's accent, I knew right away that this film is Canadian. Very interesting to see the credits and that much of the consulting was with various highschools and boards of education around Toronto. A real piece of history!

[@ComputerHistoryArchivesProject]

Hi @bladder1010, a pleasant greetings from a nearby neighbor. Thank you very much for your comments and kind words. Glad you enjoyed the video and a brief look back at the history it shares! Keep well. ~ VK, CHAP

[@onmyworkbench7000]

That was a *_BLAST FROM MY PAST!!!!_* Thank You!!!

[@ComputerHistoryArchivesProject]

Hi @onmyworkbench7000, Glad you liked it, and glad you found our channel. Thanks for visiting! ~ Victor, CHAP

[@rbk2745]

Magnificent. A lot of information in just few minutes.😊

[@ComputerHistoryArchivesProject]

Hi @rbk2745, yes, a nice learning experience! Thanks for the great feedback! ~ VK

[@maheshsrilanka3398]

My first exposure to building a crystal set was when I was a nine year old boy. It was indeed fascinating , I still retain the interest at 64 years now. What a wonder it was then and come in good stead over a half a century later. I built the match box radio. Ferrite rod and Coil , variable capacitor (tuner), Crystal Diode, transistor OC71 and earphone.

[@ComputerHistoryArchivesProject]

Sounds like a very fascinating project you had! excellent!

[@maheshsrilanka3398]

@@ComputerHistoryArchivesProject It Indeed it was a dream come true. I spent all the pocket money I got to procure the parts and the cabinet for the radio was a plastic soap dish. What a thrill it was to receive the Medium Wave signal.

[@stevemckennon7678]

Yes I built my crystal radio from old radio sets. Grabbed the coil and soldered a germanium diode, then I used a transistors socket to plug into and then it inputted to a small amp with speaker. I called it my bottle cap radio.

[@user-qm7nw7vd5s]

I learned all this at ten years-old, reading cover-to-cover my much older brother’s Basic Elements of Radio, a classic text book produced by the US Department of War (before it was renamed the politically correct, “Department of Defense”. True truths are eternal. EVERYTHING we take for granted today is based on these same principles, discovered in the 19th and 20th centuries.

[@ComputerHistoryArchivesProject]

Hi @user-qm7nw7vd5s, interesting how the name changes over time, the principles do remain the same. Great feedback, thanks very much! ~ VK

[@spyder8986]

Nice film, Good job.easy to understand.

[@ComputerHistoryArchivesProject]

Glad you enjoyed it!

[@prabhakarv4193]

Very nice and informative. Thank you

[@AdamosDad]

Good instruction never gets old, the theory and implementation are always relevant. 73's🎙KD9OAM🎧

[@ComputerHistoryArchivesProject]

Hi @AdamosDad, thank you for the great feedback. Quite true. ~ VK

[@RetroElijah1982]

Not bad for '71, this is great stuff. Another great video CHAP 👍🏽😎👍🏽📡(yes, when I typed in antenna this is what showed up, 📶 too) 📻

[@ComputerHistoryArchivesProject]

Hi @RetroEli82, thanks very much! That is good to know. Glad you liked it too. ~

[@daleeasternbrat816]

Never underestimate Foundational Technologies.

[@boblang409]

thank you that was straight to the point. good stuff.

[@ComputerHistoryArchivesProject]

Glad you enjoyed it!

[@user-ve3gh5xg9q]

Awesome knowledge

[@ComputerHistoryArchivesProject]

Hi @user-ve3gh5xg9q, glad you enjoyed it! ~ VK

[@YooTooobJeff]

Boy, I would bet just about any amount of money that what we're listening to is one of, if not the first, the earliest audio recordings of what was a young Alex Trebek!!! Edit: Alex was doing "Jackpot" on Canadian TV at this time, and this company was a Toronto film concern... He had just been host for a few years of "Reach For The Top", a game show between teams of high schoolers, so it's plausible he was approached by someone wanting to do this educational film for that same school population and he felt affinity for helping them out... Alex left for Hollywood in 1973 and never looked back.

[@ComputerHistoryArchivesProject]

Hi @YooTooobJeff, Alex was a smart guy, with lots of skills as a host. He was always fun to watch. Thanks very much for your feedback too. ~ VK

[@surendrakverma555]

Thanks Sir for posting useful information.

[@ComputerHistoryArchivesProject]

Hi @surendrakverma555, you are most welcome! Glad you liked it.

[@juans6639]

I used to build crystal radios back in 1959. Brings back memories.

[@ComputerHistoryArchivesProject]

Glad to hear it. Good times.

[@abebeaku8369]

wow,i was born in 59, pops 😊

[@0dbm]

I missed it , it’s all on chip now

[@stephenw2992]

I learned this at technical college in the early 90s, though I had already learned the basics doing electronics as a hobby in the 80s. Its still relevant to how modern communication works even if it is modulated with digital information now and needs some D to A processing before you get sound out of it

[@ComputerHistoryArchivesProject]

Hi @stephenw2992, "D to A" ... "Digital to Analog" I presume. ~ Thanks very much for the feedback.

[@mikepasko7493]

Very good video......thank you

[@captainkeyboard1007]

This show describes the general and specific methods that radio broadcast signals are reproduced so well that a radio novice could easily understand. I hope this knowledge will lead to a clear understanding about how frequency modulation (FM) radio signals are reproduced. This show was quite short for me.💙

[@ComputerHistoryArchivesProject]

Greetings @captainkeyboard1007, great assessment of the video! Hopefully this helps others increase their knowledge of basic radio tech! ~ VK

[@rohitpurohit8072]

Thanks for the valuable vintage clip

[@ComputerHistoryArchivesProject]

Glad you liked it. Thank you for the feedback! ~ VK

[@elmoreglidingclub3030]

Wow, very interesting and informative. It inspires me to try to build a receiver from scratch! Seriously. Thank you for posting.

[@ComputerHistoryArchivesProject]

Hi @elmoreglidingclub3030, you are very welcome! Glad you liked it.

[@tonywright8294]

If you’re in the Uk don’t bother with an AM radio, you will be very lucky to receive more than one program . You will receive foreign stations after dark . Best make an FM kit radio. A simple one at that .

[@ComputerHistoryArchivesProject]

Interesting, good to know that. Thanks!

[@garygranato9164]

thank you for posting this video

[@ComputerHistoryArchivesProject]

Hi @garygranato9164, you are most welcome! ~ VK

[@AnthonyHermo-j3p]

👍 finally I wish public schools teacher this WOW

[@ComputerHistoryArchivesProject]

Hi @AnthonyHermo-j3p, yes, me too. It would help lots more people understand these concepts! Thank you for your feedback!

[@september1683]

Great video! Thanks for uploading, Sir!

[@ComputerHistoryArchivesProject]

My pleasure!

[@eliasandrikopoulos]

*Great movie. It helped me un-learn lots of useful tidbits. Thanks a lot.*

[@ComputerHistoryArchivesProject]

Hi @eliasandrikopoulos, very glad you enjoyed it, glad it was helpful! ~ VK

[@SciHeartJourney]

Thank you for this video. ❤

[@ComputerHistoryArchivesProject]

You are so welcome!

[@budi0251]

And Radioshack is the place to go for fun weekend 🤗

[@unhinged17]

This is fantastic! Every RF concept is clearly laid out. Now where do I get one of those radio building block sets? That is so cool, easy enough to build if one is so inclined, I guess. Thank you for sharing this gem!!!

[@ComputerHistoryArchivesProject]

Hi @unhinged17, that collection of radio components does look like a nice project. It would be a nice challenge to put one together. Thanks very much for the great feedback!! ~ Victor, CHAP

[@thearchibaldtuttle]

I still remember looking at the tubes in the radio receiver and wondering how this works. Then studied electronic engineering and witnessed the disapearance of a lot of real electronic elements in circuits, which were replaced by integrated circuits and later by software.

[@ComputerHistoryArchivesProject]

Hi @thearchibaldtuttle, thank you for your feedback. Yes, the jump from tubes to ICs was quite a transition! ~

[@3beltwesty]

Some of these old educational films were distributed as slide form and film strip.. you advanced the slide or firm strip every beep. One system had a record you played for the audio. And you advanced the film strip or slide every beep Usually the teacher had one kid advance the film strip or hit the button on the slide projector. A later record had stereo ie 2 tracks and one was the beep so the volume would be low so the usable by the film strip slash slide operator. This system of moving slide by slide allowed questions to be asked when students got lost or wanted to know more. Usually a couple students ran the record player and projectors once competent. This allowed the teacher to focus on teaching. Actually running a system like that in 4th to 6th grade was a nice responsibility lesson. Ie not screw up the record or record needle or ruin the film strip or slides.

[@ComputerHistoryArchivesProject]

Hi @3beltwesty, that's a great piece of history that I had forgotten about(!) Schools used lots of A/V for a number of years. It was a good teaching tool. Glad we could share this one again. Thanks for sharing your memories of those early days! ~

[@3beltwesty]

​.

[@harrylister804]

@@ComputerHistoryArchivesProject I had the job of distributing the AV equipment and media that classes would use during the school day. I reported to the librarian, passed it all out and then went to class like every other kid. In the afternoon, I collected it all and then went home.

[@SSmith-fm9kg]

As usual with these types of explanation films, you have to already know how a radio works to be able to understand what's being said. If not, all of this is as clear as muddy water.

[@ComputerHistoryArchivesProject]

Hope this helped a bit.

[@Portrayalpress]

I found it very helpful....just starting the journey of working on vintage radios.

[@HemanthMV72]

This is not basics. It's a recap for those who know it all.

[@buffplums]

I would love to develop a full demonstration course starting with basic signal theory, frequency and spectrum domains and build it up into developing the principles of resonance, tuning, mixing, need for IF, single and dual conversion etc … wonder if anyone would be interested?

[@ComputerHistoryArchivesProject]

Hi @buffplums, that sounds like a very interesting project! Seems like some people today want short "sound bite" videos of how to do something. Smarter folks like the longer versions where they can actually learn something. Takes more work to produce those, but perhaps that is worth it. (can't please everyone, can we?) Have a great day!

[@buffplums]

@@ComputerHistoryArchivesProject Thanks for that mate yes I might just have a go at that. You have a good day too cheers

[@pyreneesfarm7818]

It is called Audio Modulation, the other is called Frequency modulation or as the members of the "underground" called it FM radio

[@pyreneesfarm7818]

OK, I am old. I built crystal radios, (not out of Meth) and played them at night, using a variety of antennas ( I made a few out of coat hangers, and some out of electrical and speaker wire hung from a curtain rod in my room) and circuitry. When I was a teen ager, I had a "satellite" radio. It was a crystal radio housed in some kind of case we imagined a satellite looked like. Oh those innocent days!

[@ComputerHistoryArchivesProject]

Yes, very true.

[@richardbattles8858]

Amplitude Modulation and Frquency Modulation. AM has to sideboards upper and lower 3khz wide each.

[@optimisticpessimist484]

You mean TWO SIDEBANDS. I think your spellchecker got you there.

[@erdingtown]

I built my first radio at !0 years old. I learned about it from my Sunday school teacher who taught us after church. I am 83. It was a crystal set. 4years latter I hot the first transistor ck722 and added amplification

[@ComputerHistoryArchivesProject]

Hi @erdingtown, that is a great story! I bet it was so exciting to get the first transistor set! Those memories never go away. Thanks for sharing that with us. Keep well. ~ Victor, CHAP

[@scotttodd3506]

Noted how pretty much all of the towers in those shots were NOT AM radio towers- saw a TV, FM and microwave tower, however.

[@ComputerHistoryArchivesProject]

Hi @scotttodd3506, Interesting observations. Thank you.

[@FaizTech466]

Good

[@jgarbo3541]

Made my set in the 50s (10 yrs old), used Cat's Whiskery to tickle the crystal, condenser to find stations and old air force head set to listen. More fun (and learning) than today's "radio". Today it;s just buy and use, no understanding. Sad.

[@ComputerHistoryArchivesProject]

A great learning experience! The kind of learning that stays with you. : )

[@S.Alenze]

I believe classic and vintage radios are way better than modern ones reception quality wise. Mostly all electronics based devices are better before than now

[@ComputerHistoryArchivesProject]

Very true!

[@arianagm2332]

Lol! I don't miss lugging that heavy stuff around!!! Yes the sound was analog and not crisp though but... I'm good. Fining the bad wire was a real pain as well!

[@S.Alenze]

@@arianagm2332 Yes, they're not the lightest in weight or the prettiest in look. In fact most of them are not easy to get 'em running due to the fact that they use types of batteries simply do not exist nowadays. All that aside, they were built to last. As a radio enthusiast I can tell you that radios' reception depend on more than their antennas. Nature elements as humidity, cloudless sky, reduced earth magnetic field (at night), and many other factors play a major role in your radio reception. Did you know that when humidity is high you could hear channels from far away cities such that you can't pick up on a dry day? That's why in a coastal city you find more channels on radio. I work with electronic components for living and I prefer to use a used component (transistor, ic , capacitor , resistor ...etc) from an old radio or tv than buying new ones which is cheaper for me.

[@lestergillis8171]

How about the FLUX CAPACITOR ? I didn't see any of those...🤔

[@emilianopepa8678]

I think that a lot of people especially in Africa or Arabian countries Need to restart from this !

[@ComputerHistoryArchivesProject]

An interesting perspective... : )

[@Dr_Mario2007]

Yet if you think about radio frequency nowadays, it's basically ones and zeros nowadays, for digital radio and even cell phones (including smartphones). Radio technology have indeed evolved so much during that time. Of course you can still use triode vacuum tube for radio, yet you may have to toss in microcontroller to digitally compute the audio data before you could hear it especially via digital radio.

[@ComputerHistoryArchivesProject]

Hi @Dr_Mario2007, good point, an interesting way to look at it. Thank you for the thoughtful feedback! ~

[@radiorob7543]

Twit.

[@vishalvv6585]

Can I know what was that song in BGM ❤❤❤

[@ComputerHistoryArchivesProject]

Thank you for your comment.... but am not sure what song you are referring to....

[@vishalvv6585]

​@@ComputerHistoryArchivesProject the trumpet music @ 16:40 , may I know what's the name of this Tune/Song ?

[@matsuz100]

This is gold dust, because no one, but no one tells the full joined up story.

[@ComputerHistoryArchivesProject]

Hi @matsuz100, thank you!

[@cameronalexander359]

Do your HAM radio licence... and you'll need to understand this.

[@Wranorn]

11:01 Red is black and blue is red? Thanks for the video.

[@ComputerHistoryArchivesProject]

Glad you liked it! Thanks!

[@jackwhitestripe7342]

radio is the future!

[@ComputerHistoryArchivesProject]

Yes, someday soon.

[@maiconvengrzennunesbusolog4864]

👏👏👏

[@ComputerHistoryArchivesProject]

Thank you. Glad you enjoyed it!

[@MrSerendipity01]

Why do the inductors have metal shields?

[@thomaswinter6977]

How does radio-communication work? Imagine we have a dog with a body length of 600 kilometers. His snout is in Berlin, his tail in Munich. If now someone beats his tail in Munich, he barks in Berlin. This is wired communication. Radio-communication is the same, but without dog.

[@ComputerHistoryArchivesProject]

Interesting comparison, thanks...

[@borisdorofeev5602]

Schools in the US have become ridiculous. They have all of this funding, all of these tools available for years, and all the reason in the world to make practical knowledge a driving method of keeping kids in school. In the past kids had woodshop, or could learn about automobiles, or electronics. Today there are so many more interesting resources and things available like CAD or microcontrollers. Instead they just waste time and money trying to drive political trends.

[@ComputerHistoryArchivesProject]

Hi @borisdorofeev5602, very interesting observations, thank you! -

[@jackevans2386]

The narrator sounded like a human, which is unusual these days. It is normally a robot voice.

[@ComputerHistoryArchivesProject]

Hi @jackevans2386, glad you found our channel. Thanks for visiting! ~ Victor, CHAP

[@michaelmarkham2454]

Rip Alex Trebek

[@ComputerHistoryArchivesProject]

He was a good man..

[@DaumbFauckProduction]

how is Nikola Tesla not mentioned in this?

[@ComputerHistoryArchivesProject]

That is a good question.

[@SusanPearce_H]

1971? Valves/Tubes for audio were long gone by then.

[@ComputerHistoryArchivesProject]

... seems that quite a few lingered on... and still around today.

[@SusanPearce_H]

@@ComputerHistoryArchivesProject High-powered RF valves, yes. Audio valves are only retro vanity follies.

[@ComputerHistoryArchivesProject]

Hi @SusanPearce_H, Oh... I see. Thank you.

[@InsideOfMyOwnMind]

The narrator sounded like Ronald Reagan.

[@ComputerHistoryArchivesProject]

Interesting, will have to listen again to notice that. Thanks!

[@Petertronic]

Sounded like an AI voice

[@electronixTech]

It sounds like a younger Alex Trebeck.

[@episol144]

73's F6GBZ qth HONFLEUR JN09CJ

[@ComputerHistoryArchivesProject]

@episol144, thank you! ~~

[@sergiosilva6500]

And Nicola Tesla inventes radio circuitos using microwa ves

[@ComputerHistoryArchivesProject]

Tesla.... quite a genius!

[@PravdaSeed.96]

👉This info⁉️ Without Master ,"Nikola Tesla" @This Time ⁉️.

[@ComputerHistoryArchivesProject]

It appears so.

[@Moonlightshadow-lq4fr]

The main reason they don't teach radio circuitry in schools these days is because it shows the earth as a flat plane rather than a ball.

[@ComputerHistoryArchivesProject]

Not sure if that's the reason...

[@user_00759]

First Radio was invented by Acharya Jagadish Chandra Bose from Bangla. 🙏🙏

[@ComputerHistoryArchivesProject]

really?

[@user_00759]

@@ComputerHistoryArchivesProject yes

[@hopethisworks1212]

I as quite looking forward to watching this. After 3 seconds it was obvious it was american.Perhaps give a warning. I suppose you did when you called Valves Vacuum toobs.

[@ComputerHistoryArchivesProject]

Hi @hopethisworks1212, well perhaps a "warning" is in order. : ) I think it was produced by a Canadian company, but with an American flavor.. BTW, when most Americans hear the term "valves" they usually think of "gas lines" or "plumbing fixtures." not vacuum tubes. And I thought we had a common language. I was wrong. : ) Thanks for the perspective!

[@arianagm2332]

There is no "common" language amongst engineers 😂😂😂❤

[@arianagm2332]

Vacuum tubes!!! 😜

[@emonk042]

I think I may have seen this in high school Electronics

[@mansuetosilvadesouza9653]

somas d" calendário 📅

[@ComputerHistoryArchivesProject]

Thank you!