How FM Radio Works: A History and Exploration of Frequency Modulation

[@GrowlyBear917]

Long-time radio and TV engineer here. Here's some adulation for your modulation! Best explanation I've seen. Loved the graphical presentation using SDR.

[@WECB640]

This is beautifully presented. It is easy for the layman to understand, yet enjoyable for the radio engineer at the same time. Take a bow, you earned it. 73

[@BroadcastBlueprint]

Thank you so much!

[@hugh007]

The best description of AM and FM I've seen. 100 years of radio in 34 minutes: quite a feat. I had the privilege of meeting Tom Lewis when his book was released and the film was in production. Thanks for all your work. K4XBC

[@BroadcastBlueprint]

That’s high praise! Thank you so much!

[@gordonsmith8440]

I’ve been trying to get over the broad-strokes understanding of FM stereo radio hump for like 5 years and this video finally did it. I was just looking for something to watch while I made coffee. You’re making the internet a better place, thanks!

[@BroadcastBlueprint]

I’m glad it helped! Thank you for watching

[@basshorseman998]

With 35+ years in radio (also amateur), this was a great overview with some detail that I was very impressed with...well done...Thanks

[@leendert-jandenboer9625]

Thanks for the crystal-clear explanation. Immensely helpful, thanks!

[@maksymmoroz]

Thank you for your work, man. Very clear. I was surprised that the video has less than 100k views

[@mxcollin95]

Absolutely excellent video! Thanks for posting. 👍 Definitely subscribing!

[@cateclism316]

I understand AM and FM a little better because I worked with analog music synthesizers in college. I also remember FM's ascendance in the 1970s, and how crisp and clear it was compared to AM stations.

[@redthepost]

Thank you for helping me resurrect my interest in broadcasting technology. Fun stuff.

[@Flagrazi]

Best explanation I've seen. Tks. 73

[@ChrisGoosman]

Fantastic video! Pre- and De- emphasis, as well as the curves used in various noise reductions schemes, is also somewhat analogous to the RIAA curve used when cutting and then playing back vinyl. I've been involved in disc cutting in my lifetime, and like FM, it's magic and a wonder that it works as well as it does, ha!

[@BroadcastBlueprint]

When I want the challenge of not knowing why something works when it clearly shouldn’t, I go straight to audio and RF electronics!

[@jaredbater6229]

What an absolutely fantastic video. Amazing explanations!

[@BroadcastBlueprint]

Glad you liked it!

[@FrostyDog9186]

An amazingly good video!

[@xtlmeth]

Thank you for naming this video and taking the time to put so much detail.

[@christopherjones2283]

bravo! well done professor

[@TVJAY]

This is an amazing video. Thank you for making it. I will share this with a lot of people.

[@michaelcox436]

Excellent, thank you

[@sophiapriest]

I love this video! It was so informational, and I loved the metaphors and examples you provided as well. I'm slowly learning about this type of stuff to someday work in the radio industry, and I this also explained a lot about things I've noticed but didn't understand much about while using my SDR! Thanks for this video, and I can't wait to see what you'll upload next!

[@BroadcastBlueprint]

Glad it helped you learn something new! That's my goal when making these videos.

[@raulgongora5288]

Hello sr very interesting to learn about antenas thaswyou and Blessings

[@turbo2ltr]

two thumbs up. great video.

[@kbabioch]

Such great and high quality content. Hopefully you'll get more subs and views soon :-).

[@barrygeary1890]

Has pre emphasis on fm anything to do with reducing high frequencys?

[@BroadcastBlueprint]

Sort of… since there’s more noise at higher audio frequencies in the demodulated signal, pre-emphasis helps reduce that high frequency noise while trying to keep the modulating signal intact.

[@InsideOfMyOwnMind]

@@BroadcastBlueprint Experimenting with TX SDR I put my preemphasis on the sum and difference (mid and side if you prefer) instead of left and right just to see if I could hear a difference between the two methods. I could not but that's not to say there weren't more subtle differences. Is there any knowledge about doing this from a more peer reviewed perspective?

[@jamesmatheson4746]

Explain HD AM and FM. Most broadcasters have given up on HD AM

[@InsideOfMyOwnMind]

AM HD could actually sound almost similar to what was promised...IF... the broadcast was set up properly. Most could not make it work and hence gave up.

[@danielleclare2938]

This is a great explanation for people that ALREADY KNOW THIS but for laymen the terms and relationships are so glossed over that I get lost in the translation. Nice try maybe a physics class could keep up.