Tuned Radio
January 28, 2026 • EPISODE 295
How do radios tune in to specific stations? In this episode of Science LIVE, Dr. Roger Billings explores the tuned radio—how circuits are adjusted to select particular frequencies so we can hear one station clearly among many. Learn why tuning is essential for radio reception and how the first wireless radio signal crossed the Atlantic Ocean, launching a new era of global communication.
About DrB
Dr. Roger Billings is a visionary innovator whose work has touched the lives of millions of students and transformed the landscape of education. Widely known as “DrB” to the countless kids who benefit from his groundbreaking Acellus learning system, Dr. Billings has dedicated his life to advancing education through technology.
As part of DrB’s lifelong commitment to supporting education, Science LIVE was launched as a way to “give back” by mentoring students in conjunction with the Roger Billings Scholarship Program.
Read more about DrB »
About the Roger Billings Scholarship Program »
The part about Wi-Fi was cool.
Could the computer rope survive me though?
Radio is so interesting! I loved learning about that!!
Sell the r51 radio transmitter. I want it as a complete radio.
So Dr. Billings how old is your grandson Caleb?
how many people used radio back then?
Listening to Davis and Caleb is so interesting and fun to watch!
The pirate part was fun to watch
Good to know all that about radios!
The computer chip in the thread is so cool!
Thank you for doing these live’s they have answered a lot of my questions
I wanna make a radio just for the fun of it
not sure if my first comment went though, but so cool about the coding can be so tiny like a fishing line
The computer string was really cool.
Hi from South Africa!
That is so crazy that the name WI-FI was made up
The word that describes Bill Leer is persevering
can wi fi work if you are under ground.
So awesome! I was very confused about how radios worked and this helped so much!
My brothers and dad would never do anything else if they actually had a computerized fishing line!
Hello from Arkansas!
I always enjoy Acellus Live and how much I learn from it.
I want that in the store
Hi everyone.
From South Africa🇿🇦.
Please put that radio in the store!
I thought it was funny how both people in radio said they will listen to each other’s news cast to determine the weather.
Technology is so interesting!
I loved this episode. The comic strip was really cool, I am excited to see what’s planned for next week. I loved the part when they sang Wellerman I love that song!
That electronic thread is really quite cool it would be fun to have any pattern you want on a shirt. Would be a bit bright though.
would a radio work if it barely had anything built onto its shell and inner circuts?
I’ve always wanted to know how sound is transferred from one place to another wirelessly.
A computer in a thread that can be run over without breaking sounds like a futuristic movie!
Is the computer thread written in a certain type of code?
these lives just keep getting more interesting. I love them.
Radio transistors are pretty cool.
I well be able to watch TV on me shirts in the car with smaft clothes!!!
Radios are pretty cool!
I enjoy how different all the topics are weekly
I love being homeschooled using Acellus!!
WOW! that’s some kewl radio magic!
So Wi-fi is a made up name? Interesting!
id like to one day build my own computer chip.
Thank goodness for these people who played a part in the creation of WiFi.
I quite liked learning about how WiFi came to be.
I like how the protects explain hard topics in a way I can start to understand. Please add the radios to the store. I would like to build one. Thank you!
Very cool how Hertz’s unfinished became finished overtime!
I watched Science Live episode 295 about tuned radios, and it was cool to learn how radios use frequencies to pick up different stations.
the coil is interesting but i did want to see the equation
Wi-Fi is an interesting creation
Does wireless charging depend on frequency? How does that work??
I learned a lot how tuned radio works. The explanation was clear and engaging.
Good try at the Australian accent haha.
Comment I learned a lot about how tuned radio works. The explanation was clear and engaging.
Computer lines…Hmmm…We can make Tuxedo From the Movie all of the Fighting Dodging Weapon Assembly and that will be really cool
Why can a radio receive one station at a time even though many signals are in the air?
I can’t believe wi-fi is just a made up name? This science live is so cool and interesting!
I think it would be cool to build a radio, but I want to earn a real radio kit.
How do they squish the transisters into thread?
Radios are always interesting to me.
I really hope science live lasts forever. Thank you for this Science live I loved it!
Im so glad WIFI is where it is today!
I really like hearing about the origins of Wi-Fi. I thought it was very interesting.
How did pirate Caleb use spy glass and find a bird with his blind eye
I never really thought about radios and how they worked before. Interesting.
That was my first science live and i am looking forward to more.
I love these segments
I love learning about all of these topics that I would normally not even think about. Thank you for covering the amazing process behind these things that most of us just take for granted. The radio stations, who would have thought about how that works?
How did the radio effect or change technology today?
This was interesting and helped me to understand wifi and radio better.
WI-fi has always been like a foreign concept to me on how they work and how the name came to be. Thank you for explaining. also I kinda want to build an R51
Hi from Germany!!
It is a very interesting that simple flash drive works so well
i have always been thinking about how radio and wifi were both similar.
It is nice to know that WiFi is just some random name and that it did not mean anything.
This live was so cool and interesting!
The Inventioneers and the Proteges were amazing!!!!!!!!!😄😄🤑🇿🇦🇿🇦
cant wait to see the future for computers
I think radio waves are very interesting and useful for many things. I especially like learning and researching Nikola Tesla’s discovery’s and experiments on radio waves.
This is awsome i love watching the videos *
I enjoyed learning more about computers and radios.
I always learn so much on science live!
did parents take away a kids radio like how parents today take away a kids phone.
Radio is really interesting. It’s crazy.
I loved seeing how you can create a DIY radio antenna. The science behind the mechanism was fascinating!
Thanks for the great video. Still learning to get to this level but doing my best
Great topic. So interesting to learn how radios were invented.
I liked this week’s episode a lot, cant wait to see what we learn next week.
Thanks for another fun episode! It was so interesting to learn how Wi-Fi was named.
This episode is so interesting! Thank you team!
The computer string was dope.
It’s so cool learning about how they named Wi-Fi, that’s the type of stuff you never think about but it’s always interesting to learn about!
I learned a lot of new things about Wi-Fi and the radio
Another great science live! I love radios
i didn’t know wifi didn’t actually stand for anything, that’s so cool! loved this weeks live!!
I loved learning about Radios and WiFi!
I also love the computer string! Thats amazing! Its virtually indestructible and would be incredible for my cosplay and would be just as amazing for my Dad’s VR!
I never really thought of this before, this is super interesting!
What a amazing episode of Science Live, It really opened my eyes.
Great Science Live! I enjoyed the radio waves segment and seeing David and Caleb dress up as pirates!
Blue monster galaxies are so cool and very exciting!! Astronomers believe it shows how quickly universe evolved in the beginning.
This week’s episode was amazing, and I learned so much!
How persistent was Marconi really inspired me.How radio waves was able to travel so far was amazing. David and Caleb always great. R51 love it.
Daved and Caleb are so great. The way they explain its great. How radio waves travel so far was awsome. Love this episode. R51 so nice.
Was a radio a common household oject everyone had? Or was it seen as a more “luxurious” item?
I always wondered how we could hear the songs on the radio. That was interesting to learn.
Such a good and intriguing episode!
This is so cool because i recently learnt about radio waves, Ultraviolet waves, etc.
I had always wondered how exactly radios worked!
I look forward to these every Wednesday!!
Hello from Florida
oh my God I love science live it teaches you so many things!
Wi-Fi waves are amazing and it’s really incredible to see how they work.
How many people used radio back then?
I absolutely loved this episode!
I like learning from you all
Just got home from vacation what’s up
Could you turn the computer thread into a dog collar so you can track your dog?
R51 is so funny! I love the winter butterfly! I want to build one too if there was snow in Fresno.
thank you I really liked this how many people used radio back then
It was cool seeing the transmitter of the LED lights and how it works because I have it in my room walls!
The computer chip in the thread was amazing!
Awesome, always love these.
Love the video, especially r51 it was very entertaining.
Learning about wifi is so cool and crazy
I like the way he talk about Wi-Fi which make me understand more about it. I used wifi everyday at home..
Science lives is amazing I love when ever there a new episode !!
this was so cool
Great video this week.
Thank you for the live. I hope everyone has a great day
Great and interesting live as always!
WI-FI being a made up name and not an official one is pretty funny to me.
This was pretty cool.
this is one of my favorite parts of the week!
So cool how many ways radios are used .
hi from alabama!
So, interesting!!!! I do learn something new every day!!! Also, how many people used radio back then???
Dr Billings teaches me a lot of stuff.
I would totally take a helicopter class, that sounds so sick.
This was such an interesting episode!
Hello from Texas!
radios are super cool, I’m glad I’ve learned more!!
WiFi is truly a cool thing that was created and it gave us the ability to have devices that don’t need to be plugged in to access the internet. Really interesting.
Hello from New Orleans!
I am so happy to have Acellus!
Great and intresting as always!!!!
Learning about how far technology has come from morse code, telegram and wifi.
Technology has come so far! I can’t wait to see how far it’ll go.
This one was very interesting.
I think learning about wi-fi is so cool. Back in the day, they had to literally plug a cord into the computer to get internet versus now, you have a chip in your phone, laptop etc that sends/receives signals to an access point in order to get internet wireless now. Technology has come along way.
The computer chip string was so cool!!
very creative! love this!
Great episode this week!
Im really looking forward to the helicopter flying lessons!!!
Who is going to be teaching this pilot course?
What year was radio invented and become popular???
My dad still owns a radio!
Find it really interesting how radios work!
The recoil wire is a thing I think is good for transferring energy from it self to another, it’s crazy you can get a radio to work with it though.
it’s neat how science is always finding new things…
This video shocked me with WiFi and tech
I love Dr. Tabias! he’s a cool and funny guy!
Were there a lot of people that used radios or did they become more popular as time went on?
Watching from Texas!
wifi, and radios is something i always wanted to learn about it .
Always looking forward to the Science Lives, such a pleasure listening in each week!
Tech like this always makes me think of what’s in store for the future.
You guys should add it to the gold shop. It would sell great!
Honestly, can’t imagine this world without radios, seriously, we would be cooked.
Radios always fascinated me on how they worked. Very nice
I really enjoyed this live.
I really hope we get to build our own R51 radio.
Thank you for showing me how WiFi and radios work thats so cool!!!
Learning about computer string was so fun!
So many new facts!
I love the segment on WiFi and radios