This method of adding and subtracting colours to show what happens with the frequencies is a brilliant demonstration. This is the clearest explanation I have ever seen. I know you made this 6 years ago, but thank you so much for posting it.
@AllAmericanFiveRadio Жыл бұрын
Thank you, and your welcome.
@jefffoster35579 ай бұрын
Can someone please explain the why? Why are we using an oscillator in the first place? I could understand the how much easier if I know the why.
@matambale Жыл бұрын
This is a brilliant angle on explaining heterodyning. Your eBook is also *exceptional* on clarifying the kinds of details that trip people up when trying to follow How It Works. Best way to grade an engineer's knowledge is on how effectively he or she can explain something truly complex to someone else. Your generosity is greatly appreciated.
@AllAmericanFiveRadio Жыл бұрын
Thank you for taking the time and commenting. It does make me glad that that you find my KZbin site useful and helpful. Thank you, and your welcome.
@AmitKumar-yw7ri Жыл бұрын
@@AllAmericanFiveRadio how can I get the book?
@AllAmericanFiveRadio Жыл бұрын
@@AmitKumar-yw7ri Free download Password is allamericanfiveradio kzbin.info?event=channel_description&redir_token=QUFFLUhqa2hhVTRycWdJd1FUbTFCZWNmdGtQNlZCRmEzd3xBQ3Jtc0tuOFQ2bFhRcWdjdUdIcUREcnZFaHc0M2xURGhITVRuWDE2cGlDakdYUF9uODktNzc3TVRJTWdROUt6R3NLN2lla3hFS2lIM0RnOXR1dXFxMGx2cUNtWDhXb1Zvc2RCbGQxTThoendmN2E5R0lJdmI0Yw&q=https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F1HHmaWYr7UMACfmS4W5uL6PADoem2KlRp%2Fview%3Fusp%3Dsharing
@josegermanparra60644 жыл бұрын
After reading all the math in textbooks this is the best explanation! Thanks
@AllAmericanFiveRadio4 жыл бұрын
Thanks and your welcome. It makes me happy that this video helped you understand heterodyning frequencies.
@stephenmoore27548 жыл бұрын
Brilliant. I love practical demonstrations that allow one to visualize the physics. I am going to tuck this away into my bag of tricks.
@AllAmericanFiveRadio8 жыл бұрын
+Stephen Moore Thanks
@brucekempf46484 жыл бұрын
This was the best explanation I have seen. Great Job!
@AllAmericanFiveRadio4 жыл бұрын
Thanks and your welcome.
@Nail02552 жыл бұрын
The best explanation ever seen . Thanks a lot
@AllAmericanFiveRadio2 жыл бұрын
Thank you, and your welcome.
@GroverCricketDaisy20 күн бұрын
This is great. I have watched this a number of times and explains mixed frequencies very well.
@AllAmericanFiveRadio20 күн бұрын
Thanks Bill, I have done a few of these on this subject.
@francismannion70757 жыл бұрын
Fantastic, for the first time I feel I have a real understanding of the super het.
@AllAmericanFiveRadio6 ай бұрын
Thank you.
@abeleballestri6127 жыл бұрын
Thanks for this excellent video showing how the intermediate frequency is generated and further amplified in the following stage of this beautiful made easy schematic diagram. It is a fantastic way of explaining difficult concept of the etherdyne principle of the radio. ä
@AllAmericanFiveRadio6 ай бұрын
Thank you, and your welcome.
@jp0407598 жыл бұрын
This was excellent. Great way to represent superhetting.
@AllAmericanFiveRadio8 жыл бұрын
+jp040759 Thanks
@esnam65578 жыл бұрын
Another excellent demonstration, thank you very much.
@AllAmericanFiveRadio8 жыл бұрын
+esmaeil nam Thanks
@CharlieTechie8 жыл бұрын
Excellently! Nice idea with colors, will need to use that when explaining to students.
@AllAmericanFiveRadio8 жыл бұрын
Thanks. I thought colors would be a visual good analogy and a good frequency analogy.
@hhhh35518 жыл бұрын
thank you very much again Mr. McWhorter
@AntiqueRadioandTV8 жыл бұрын
Excellent any easily comprehensible demonstration Rick. Exemplary! It was also wnderful to finally virtually meet you at the Burlington Mini Make Faire. Yes, i also am a subscriber to Dean's "Hackaweek" channel. Between your voice and you describing being an engineer at three radio stations, it was simple to figure out. Nice display there at the Faire! Did you have fun? 73s my friend, Tom
@AllAmericanFiveRadio8 жыл бұрын
+AntiqueRadioandTV Had a lot of fun at the Mini Maker Faire. I told Ben that some parents had to pull their kids away from my table.
@Mnestori111 ай бұрын
Awesome explanation!
@AllAmericanFiveRadio11 ай бұрын
Thank you!
@andrewferg87372 жыл бұрын
Love this explanation.
@AllAmericanFiveRadio2 жыл бұрын
Thank you, hope this video helps. Did you download my free eBook?
@tonyperry67028 жыл бұрын
Thank you, sir.
@n1chp3 жыл бұрын
This video was a big help.
@AllAmericanFiveRadio3 жыл бұрын
Thanks and your welcome.
@kka100013 жыл бұрын
Thanks a million, that was easy to understand.
@AllAmericanFiveRadio3 жыл бұрын
Thanks, glad it helped.
@zynthos95 жыл бұрын
The 455kHz filters are bandpass filters right? What would be the passband of these filters? If they were very narrow you wouldn’t be able to use the output for audio right? Their passband has to be wide enough to cover the range of frequencies across which the original RF frequency signal into the antenna is Amplitude Modulated right? How wide would this passband be?
@AllAmericanFiveRadio5 жыл бұрын
The 455KHz is a very narrow peak. The audio information is on the amplitude of the 455KHz carrier. How does a Diode, Demodulate AM Amplitude Modulation kzbin.info/www/bejne/m5uUfHahesSFqbs
@stormlight41848 жыл бұрын
Good Video and explanation. Thanks
@AllAmericanFiveRadio8 жыл бұрын
+Billy “stormlight” Steen Thanks
@taurusgemini47928 жыл бұрын
Brilliant, thank you
@AllAmericanFiveRadio8 жыл бұрын
Thanks
@MrHarveyluke8 жыл бұрын
Great video demonstration. Wish we had the internet, You Tube, Photoshop, et.al 50 years ago when I was learning all this. It would have been so much easier! 73 KM4JA
@AllAmericanFiveRadio8 жыл бұрын
+MrHarveyluke Thanks
@umajunkcollector8 жыл бұрын
Well done Rick, I need a refresher on PLL. I heard that the new Icom IC7300 does away with superht. I wonder what they're up to, most likely all digital like sillyfones. Don
@AllAmericanFiveRadio8 жыл бұрын
+umajunkcollector PLL would be fun
@jeffharrison1090 Жыл бұрын
Hi there! I understand fairly well about how the local oscillator mix frequency with the selected antenna emf carrier where the output will be 455Khz and you get the sum and differences which are the 4 output signals on the plate of 1st tube. But I can't get my mind to understand how even at the antenna as carrier waves from a whole HOST of signals hitting the antenna, WHY don't you get "destructive interference" (Lost Information) due to incidental frequencies cancelling out each other. Like, if you have two or three "water" waves coming to shore, sometimes they add up to produce a larger wave...and sometimes the peaks and valleys cancel each other and you don't get a peak or valley. With a multitude of radio frequencies hitting the antenna, why isn't that information LOST on the input grid of the 1st tube? Do radio waves not behave like water waves in that respect? Perhaps it's just that simple, but I need to hear from someone that knows...lol! Perhaps not matter how many radio signals there are in the area, "radio" waves always combine, but never destroy? Thx AllAmericanFive or anyone who can help me correct my thinking!
@AllAmericanFiveRadio Жыл бұрын
Interesting question and observation. If you through two rocks simultaneously into a pond, the waves from each will interact with each other and depending on the distance from each other they will add and subtract at various points. The waves produce this way are of the same frequency. This means that they can influence each other as much as possible. This is why there cannot be two radio stations on the same frequency in the same coverage area. The distance between radio stations and the difference in frequency of each radio station are carefully chosen to minimize interference between stations. I helped take care of a 50,000 watt AM station that was daytime only, from sunrise to sunset only. This station had to go off the air at sundown because at night the sky wave travels much farther. This station, in North Carolina, was on the same frequency as a 24 hour station in Boston. At night if the North Carolina station did not go off the air it interfered with the station in Boston. So the time of day is also very important along with distance and frequency.
@i829964 жыл бұрын
Perfectly done.
@AllAmericanFiveRadio4 жыл бұрын
Thanks
@PatrickInCayman4 жыл бұрын
Hi Richard, you have some of the best comprehensive video's and explanations out on YT. I have been struggling grabbing exactly what the hetrodyne was doing within the mixer/oscillator sections and your videos really helped. Thanks! Just a few questions. If you were to put a scope on the plate of the first tube, what would it look like? Also how/why is the modulation maintained in the bottom 455K signal?
@AllAmericanFiveRadio4 жыл бұрын
Thanks pappafrito A scope on the first plat would already be almost only 455KHz because the the primary and secondary are very sharply (high Q) tuned. I'm not sure what you mean by “ bottom 455K modulated signal” and that's OK, I want to answer your questions. You do have the right idea about the purpose of the highly tuned I.F.'s, “ignoring anything else”. The tuned I.F.'s only passes the 455KHz modulated signal. Ask your questions. Here is a few videos that may help you on AM Demodulation. AM Detector Demodulator kzbin.info/www/bejne/bnK6pJarfLidqbs AM Radio Demodulation Oscilloscope Demo kzbin.info/www/bejne/pnykYYeGmdN7nZo How does a Diode, Demodulate AM Amplitude Modulation kzbin.info/www/bejne/m5uUfHahesSFqbs
@PatrickInCayman4 жыл бұрын
@@AllAmericanFiveRadio Thanks so much for responding and the links. Sorry my question is probably confusing as I tried to edit it after the fact. Basically I'm experimenting with building a low voltage tube am superhet radio (using a 12fx8 and 12al8). I’m fairly clear on the demodulation side. The mixer however I'm not quite clear on as to what is actually happening in the mixer (visually). I understand that you will end up with Rf, Rf+LOf, Rf-LOf, and LOf in the mixer (and also other frequencies??). I am not clear at all how/why that all happens in the mixer visually. So if I’m at least understanding the basic principle correctly, If I wanted the tune my radio to 640am, I would tune a gang capacitor so that both my tuner tank circuit resonates at 640Khz AND so that my local oscillator oscillates at RF+455Khz (1.095 Mhz)? Then put that signal through a highly tuned 455K filter to get the IF to the next stage amplification. Then why/how does the 455K signal maintained the modulation through and out of the mixer? Or are all of the 4 separate frequencies equally modulated? I know Rf is obviously modulated. I can see how Rf+LOf could be modulated with the audio. This is where I’m getting lost… lol! Thank a million, love your vids!
@AllAmericanFiveRadio4 жыл бұрын
@@PatrickInCayman Thanks pappafrito I'm thinking about how to show the mixing process. Might make a video. It has to do with Harmonics. I'm doing about three or four things (projects). SO if you do not hear from me in a few weeks, send me an email. I want to answer your questions. Rick
@PatrickInCayman4 жыл бұрын
@@AllAmericanFiveRadio Thanks Rick, looking forward to it! And thanks again
@AnywheresArt7 жыл бұрын
Excellent.
@AllAmericanFiveRadio6 ай бұрын
Thank you.
@silviowel2 жыл бұрын
saudações brasileiras ao amigo.........................por favor como posso conseguir o seu e-book? gostaria de te-lo....................muito obrigado
@AllAmericanFiveRadio2 жыл бұрын
Thank you, and your welcome. PASSWORD is allamericanfiveradio drive.google.com/file/d/1HHmaWYr7UMACfmS4W5uL6PADoem2KlRp/view?usp=sharing
@barn59238 жыл бұрын
THANKS VERY HELPFUL
@AllAmericanFiveRadio8 жыл бұрын
Thanks
@hhhh35518 жыл бұрын
good job thank you sir
@AllAmericanFiveRadio8 жыл бұрын
+Rastaa Marley Thanks
@50jegadeesan7 жыл бұрын
pl release fm stereo multiplexing explanation in detail
@stevewinwood36744 жыл бұрын
is this the same as a mixer for a FM signal or radio circuit?
@AllAmericanFiveRadio4 жыл бұрын
AM intermediate frequency is 455KHz, FM intermediate frequency is 10.7MHz. Same process different frequencies. FM Radio Signal Tracing kzbin.info/www/bejne/l2bUkmeFe9SWoaM FM Detector Demodulator kzbin.info/www/bejne/qp7LmZ-qgLJssJo FM Demodulation and Detection, Demo kzbin.info/www/bejne/oorNenqknpmNbck FM Stereo MPX Decoder Circuit and Demo kzbin.info/www/bejne/d3TUdpx8faiinKs Searching My AllAmericanFiveRadio Channel kzbin.info/www/bejne/apyac6x-ps1rgNU
@stevenm6592 Жыл бұрын
Where did you add the ebook link?
@AllAmericanFiveRadio Жыл бұрын
The link is in the ABOUT on my KZbin site. Here is the information for the eBook. I hope you enjoy and find the information useful. PASSWORD is allamericanfiveradio drive.google.com/file/d/1HHmaWYr7UMACfmS4W5uL6PADoem2KlRp/view?usp=sharing
@ziggfreud9820 Жыл бұрын
Where can I find your free EBook?
@AllAmericanFiveRadio Жыл бұрын
Thank you and your welcome.
@marinvidovic763 Жыл бұрын
Sorry , ... one more strange question... ....that got stuck in the back of my mind for long time ! Do you know who and How started to measure those Units ... Like .... ohm, Farad, etc ... Ok... * 1 meter ... At least - We see exactly what constitutes a length of * 1 meter... ... Yep.. But ... How those early electroEngeners and scientists created * 1 Volt or * 1 Ohm... * Ampere ... And in particular 1 picoFarad .... I mean ... It is mindBoggling to imagin 1 billionth of something ... ... Isn't it ??? How they established those First units and how they could measure them ? ... I mean ... How Tesla could measure 10 megaHerz frequency or similar stuff. ... ??? I mean...they had wooden plinth equipment and they didn't know that ELECTRON even exists, .... So ... how they can Establish: 1 Farad ... and then measure 1 picoFarad ... or let's say : Capacitor of : 10 nano Farads. ... 🤐🤔🤪😬😱🤐 ...
@AllAmericanFiveRadio Жыл бұрын
This would be a good place to start. Georg Ohm nationalmaglab.org/magnet-academy/history-of-electricity-magnetism/pioneers/georg-ohm/ Michael Faraday nationalmaglab.org/magnet-academy/history-of-electricity-magnetism/pioneers/michael-faraday/
@danielscodary25427 ай бұрын
How do I get the ebook
@AllAmericanFiveRadio7 ай бұрын
The link is in the ABOUT. Here is the information. Password is allamericanfiveradio kzbin.info?event=channel_description&redir_token=QUFFLUhqa2hhVTRycWdJd1FUbTFCZWNmdGtQNlZCRmEzd3xBQ3Jtc0tuOFQ2bFhRcWdjdUdIcUREcnZFaHc0M2xURGhITVRuWDE2cGlDakdYUF9uODktNzc3TVRJTWdROUt6R3NLN2lla3hFS2lIM0RnOXR1dXFxMGx2cUNtWDhXb1Zvc2RCbGQxTThoendmN2E5R0lJdmI0Yw&q=https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F1HHmaWYr7UMACfmS4W5uL6PADoem2KlRp%2Fview%3Fusp%3Dsharing
@tonyperry67028 жыл бұрын
Are all AA5 radios of the superhet design?
@AllAmericanFiveRadio8 жыл бұрын
+bigpops Back in the late 1940s, 50s, and 60s, yes. The five vacuum tube set. The better radios had six tubes, it had an extra tube in the frontend, an RF amplifier
@tonyperry67028 жыл бұрын
AA5R, Joernone did a video for a tube-based AM transmitter that was connected to a design of yours. I'd like to try this project and was wondering if you'd mind sending me the schematic and parts list. Best, Tony
@AllAmericanFiveRadio8 жыл бұрын
+bigpops This link has the video, pictures, and wiring diagram with all the parts listed. Also email questions from cameramanlink and my answers. www.richardmcwhorter.com/AM_Transmitter/
@ziggfreud9820 Жыл бұрын
I found it.
@AllAmericanFiveRadio Жыл бұрын
Thank you and your welcome.
@ziggfreud9820 Жыл бұрын
@@AllAmericanFiveRadio The book and your videos are awesome thank you very much!!
@AllAmericanFiveRadio Жыл бұрын
@@ziggfreud9820 I'm glad you find them useful and helpful. Thanks again.
@vibra648 жыл бұрын
Excellent.
@AllAmericanFiveRadio8 жыл бұрын
+vibra64 Thanks
@vibra648 жыл бұрын
+AllAmericanFiveRadio Would this hetrodyning work in the newer digital radios?
@AllAmericanFiveRadio8 жыл бұрын
+vibra64 It could. Today's digital radios usually use Phase Lock Loop (PLL) circuits. The PLL circuit is simpler and does not require a change of frequency. When superheterodyne was first invented PLL was known but it was too expensive to produce, that is no longer the case.