- published: 02 Apr 2020
- views: 119338
Create your page here
-
remove the playlistJohn Renshaw Carson
- remove the playlistJohn Renshaw Carson
John Renshaw Carson
John Renshaw Carson (June 28, 1886 – October 31, 1940) was a noted transmission theorist for early communications systems. He invented single-sideband modulation.
Biography
Carson was born in Pittsburgh, Pennsylvania, graduated from Princeton University in 1907 with a Bachelor of Science degree, and attended Massachusetts Institute of Technology 1907–1908 before returning to Princeton to receive his electrical engineering degree in 1909 and a Master of Science degree in 1912. From 1912 to 1914 Carson was an instructor in Electrical Engineering and Physics at Princeton, but in 1913 was offered a position at American Telephone & Telegraph (AT&T), and in 1914 left the university.
At AT&T, Carson was involved in early radio telephone experiments. In 1915 he inventedsingle-sideband modulation to transmit multiple telephone calls simultaneously on a single electrical circuit, and was responsible for installing the first such system between Pittsburgh and Baltimore. In 1922 he published a mathematical treatment of frequency modulation (FM), which introduced the Carson bandwidth rule. In his 1922 paper, Carson presented a negative opinion of narrowband FM, which occurs when the maximum frequency swing is made narrower than the audio bandwidth. Later, Edwin Armstrong managed to demonstrate that FM can be advantageous if the frequency swing is significantly wider than the audio bandwidth. From 1917 to 1925 Carson analyzed the effects of filters on amplitude modulation via operational calculus, thus allowing telephone system designers to predict crosstalk in multiple calls over a single pair of wires. He published a series of papers on this subject in the Bell System Technical Journal, culminating in his 1926 book Electrical Circuit Theory and Operational Calculus.
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/John_Renshaw_Carson
Podcasts:
-
Understanding Frequency Modulation
This video explains the fundamental concepts behind frequency modulation (FM), common applications of FM signals, the difference between narrowband and wideband FM, and how FM signals are measured. More information about Rohde & Schwarz Signal Generators: https://www.rohde-schwarz.com/us/products/test-and-measurement/signal-generators/pg_overview_63667.html?cid=802_us_smo_ALL__20-09_a______yt_TMfundmntls_Frequency-Modulation Need help with Rohde & Schwarz products & services? Contact Us: https://www.rohde-schwarz.com/us/m4c/contact-us_253202.html?cid=802_us_smo_ALL__20-08_i______yt_TMfundmntls_
published: 02 Apr 2020 -
Radio Shack CB Radio
Radio Shack Realistic TRS -47 CB Radio Ever wonder how many of you remember the old radio models? The ones that your grandparents or maybe even your parents used to fiddle with? Perhaps you've even seen one in an antique store or at a flea market. One of those old models is the Realistic's TRC-47, a citizens Band AM/SSB radio, released back in 1974. This radio, believe it or not, was considered a top-tier entry-level radio in its time. It came with 23 channels, and controls for volume, squelch, R.F., and gain. It also featured a Clarifier circuit, a nifty little innovation that significantly improved the audio quality for both receiving and transmitting. But what's with the acronyms, you ask? Well, SSB stands for single sideband, and AM? That's amplitude modulation. The TRC-47 is an all-cr...
published: 10 Nov 2023 -
Have You P-multiplied Your Laplace Transform Lately?
Presented by: Carey Witkov, Embry-Riddle Aeronautical University, Daytona Beach FL USA https://qubeshub.org/community/groups/simiode/expo Abstract: The Laplace transform plays an important role in the teaching of differential equations because it is one of the few methods capable of dealing with discontinuous forcing functions. A century ago, John Renshaw Carson of AT&T, in placing Heaviside's operational calculus on a sound footing, introduced an integral that looks the same as the modern Laplace transform except that it includes p-multiplication (where Carson, like Heaviside, used p for the differential operator). P-multiplication was used: (i) for consistency with Heaviside's operational forms (no longer relevant today), (ii) because it gives 1 for the operational form of the st...
published: 14 Mar 2024 -
AT&T Archives: Single Sideband, a 1977 film about microwave transmission
See more from the AT&T Archives at http://techchannel.att.com/archives This short film, made by Bell Laboratories in 1977, gives a basic overview of what single-sideband transmission consists of, and why it was implemented in the phone system that year. Single sideband transmission allowed the Bell System to carry a greater number of data, voice, and broadcast signals along the microwave network. Single Sideband transmission was first recognized during the first overseas radio transmission tests conducted by the Bell System in concert with the U.S. Navy, in 1915. These tests took place at the U.S. Naval Radio Station in Arlington, Virginia, and were overseen by Harold D. Arnold of Bell Telephone (Bell Laboratories was formed later, in 1925). The tests built on scientific work by Raymond ...
published: 23 Jan 2014 -
Fundamentals of FM and RF Technology
FECN01E (C) Video - Rohde & Schwarz Understanding Frequency Modulation - https://youtu.be/gFu7-7lUGDg What is RF? - https://youtu.be/WPjniblApwk
published: 12 Dec 2020 -
“Bluerock” by Cayson Renshaw
Music video for “Bluerock” by Cayson Renshaw, from the album “What If I Told You” Music: Cayson Renshaw https://open.spotify.com/artist/2hVHQSQmwraIZSyISHOWEf https://artlist.io/ Video: Azulroto https://azulroto.com/ https://artgrid.io Lyrics: I found that photo in the sofa And it’s form way back in ‘01 So I guess there’s much I never told you Like who I am, who I love, where I been and where I came from Grew up on 913 of Bluerock Memories of six kids running ‘round those halls Then out in the California sunshine We wore no shoes, threw alley oops, and shattered windows throwing baseballs Ooh, ooh, ooh Mom packed me a brown bag everyday From five years old, up to eighteen A note that said “I love you. XO” And all my friends there begging me, making bids on mom’s fresh cookies And I...
published: 01 May 2022 -
Angle Modulation
published: 29 Jul 2020 -
The History of Single Sideband
Single sideband modulation revolutionized electronic communication, but where did the idea come from? Antique Wireless Association Curator Emeritus Ed Gable, K2MP, tells the surprising story of single sideband, its origins, the developers, companies and the hardware that brought it to the forefront of wireless communication. This presentation is the first of the AWA's monthly "AWA Shares" series. If you enjoyed this video, consider becoming a member of the Antique Wireless Association at: https://antiquewireless.org/homepage/membership/ Subscribe to the Antique Wireless Museum channel and you'll receive news of our latest video uploads.
published: 19 Aug 2021 -
Lecture 8 - FM Bandwidth and Demodulation
ELEC202 Communication Systems FM Bandwidth and Demodulation
published: 12 Apr 2021 -
Steinmetz and the Principle of Incommensurability
This video is a review of the first two chapters of a book by Charles P. Steinmetz called "Elementary Lectures on Electric Discharges, Waves and Impulses and other Transients Here is a link to Steinmetz's original lectures. http://www.tfcbooks.com/e-books/elementary_lectures.pdf Here is a link to my short paper showing the analogy and incommensurability between the dielectric and magnetic fields. https://www.researchgate.net/publication/332886426_Steinmetz_Analogy_Between_Magnetic_and_Dielectric
published: 07 May 2019
developed with YouTube
6:45
Understanding Frequency Modulation
- Order: Reorder
- Duration: 6:45
- Uploaded Date: 02 Apr 2020
- views: 119338
This video explains the fundamental concepts behind frequency modulation (FM), common applications of FM signals, the difference between narrowband and wideband...
This video explains the fundamental concepts behind frequency modulation (FM), common applications of FM signals, the difference between narrowband and wideband FM, and how FM signals are measured.
More information about Rohde & Schwarz Signal Generators: https://www.rohde-schwarz.com/us/products/test-and-measurement/signal-generators/pg_overview_63667.html?cid=802_us_smo_ALL__20-09_a______yt_TMfundmntls_Frequency-Modulation
Need help with Rohde & Schwarz products & services?
Contact Us: https://www.rohde-schwarz.com/us/m4c/contact-us_253202.html?cid=802_us_smo_ALL__20-08_i______yt_TMfundmntls_
https://wn.com/Understanding_Frequency_Modulation
This video explains the fundamental concepts behind frequency modulation (FM), common applications of FM signals, the difference between narrowband and wideband FM, and how FM signals are measured.
More information about Rohde & Schwarz Signal Generators: https://www.rohde-schwarz.com/us/products/test-and-measurement/signal-generators/pg_overview_63667.html?cid=802_us_smo_ALL__20-09_a______yt_TMfundmntls_Frequency-Modulation
Need help with Rohde & Schwarz products & services?
Contact Us: https://www.rohde-schwarz.com/us/m4c/contact-us_253202.html?cid=802_us_smo_ALL__20-08_i______yt_TMfundmntls_
2:30
Radio Shack CB Radio
- Order: Reorder
- Duration: 2:30
- Uploaded Date: 10 Nov 2023
- views: 11
Radio Shack Realistic TRS -47 CB Radio
Ever wonder how many of you remember the old radio models? The ones that your grandparents or maybe even your parents use...
Radio Shack Realistic TRS -47 CB Radio
Ever wonder how many of you remember the old radio models? The ones that your grandparents or maybe even your parents used to fiddle with? Perhaps you've even seen one in an antique store or at a flea market. One of those old models is the Realistic's TRC-47, a citizens Band AM/SSB radio, released back in 1974. This radio, believe it or not, was considered a top-tier entry-level radio in its time. It came with 23 channels, and controls for volume, squelch, R.F., and gain. It also featured a Clarifier circuit, a nifty little innovation that significantly improved the audio quality for both receiving and transmitting. But what's with the acronyms, you ask? Well, SSB stands for single sideband, and AM? That's amplitude modulation. The TRC-47 is an all-crystal radio. It has an AM band, an upper sideband, and a lower sideband. A sideband, in case you're curious, is a term coined by the Institute of Electrical and Electronics Engineers, or the IEEE, for a part of the microwave band of the electromagnetic spectrum. This spectrum covers frequencies from two to four gigahertz. Now, the S band is quite widely used. It's employed by airport surveillance radar for air traffic control, weather radar, surface ship radar, and even some communications satellites. NASA, for instance, uses the S band to communicate with the Space Shuttle and the International Space Station. The concept of amplitude modulation for single-sideband operation was first mathematically analyzed by John Renshaw Carson in 1915. Carson's work was instrumental in advancing transatlantic communications and military operations, the effects of which we reap in today's aerial communications. Sure, this radio may seem irrelevant and dated in today's world, but the technology it houses played a crucial role in historical events like World War II and even the moon landing. Classified in the Class D category, this radio doesn't require any age, citizenship, or license requirements to operate in the United States. It falls under the "License by Rule" part of the FCC rules. Essentially, if you abide by the rules, you're considered licensed. While this radio still functions, the question remains - who will you communicate with? The world has largely moved on from this form of entertainment communication. But who knows, maybe there's still someone out there, tuning into their TRC-47, waiting for your broadcast.
My Bad! The title says TRS-47 & the video title says TRC-47. TRC-47 is a military term for an old military radio that is still stuck in my head.
https://wn.com/Radio_Shack_Cb_Radio
Radio Shack Realistic TRS -47 CB Radio
Ever wonder how many of you remember the old radio models? The ones that your grandparents or maybe even your parents used to fiddle with? Perhaps you've even seen one in an antique store or at a flea market. One of those old models is the Realistic's TRC-47, a citizens Band AM/SSB radio, released back in 1974. This radio, believe it or not, was considered a top-tier entry-level radio in its time. It came with 23 channels, and controls for volume, squelch, R.F., and gain. It also featured a Clarifier circuit, a nifty little innovation that significantly improved the audio quality for both receiving and transmitting. But what's with the acronyms, you ask? Well, SSB stands for single sideband, and AM? That's amplitude modulation. The TRC-47 is an all-crystal radio. It has an AM band, an upper sideband, and a lower sideband. A sideband, in case you're curious, is a term coined by the Institute of Electrical and Electronics Engineers, or the IEEE, for a part of the microwave band of the electromagnetic spectrum. This spectrum covers frequencies from two to four gigahertz. Now, the S band is quite widely used. It's employed by airport surveillance radar for air traffic control, weather radar, surface ship radar, and even some communications satellites. NASA, for instance, uses the S band to communicate with the Space Shuttle and the International Space Station. The concept of amplitude modulation for single-sideband operation was first mathematically analyzed by John Renshaw Carson in 1915. Carson's work was instrumental in advancing transatlantic communications and military operations, the effects of which we reap in today's aerial communications. Sure, this radio may seem irrelevant and dated in today's world, but the technology it houses played a crucial role in historical events like World War II and even the moon landing. Classified in the Class D category, this radio doesn't require any age, citizenship, or license requirements to operate in the United States. It falls under the "License by Rule" part of the FCC rules. Essentially, if you abide by the rules, you're considered licensed. While this radio still functions, the question remains - who will you communicate with? The world has largely moved on from this form of entertainment communication. But who knows, maybe there's still someone out there, tuning into their TRC-47, waiting for your broadcast.
My Bad! The title says TRS-47 & the video title says TRC-47. TRC-47 is a military term for an old military radio that is still stuck in my head.
- published: 10 Nov 2023
- views: 11
23:03
Have You P-multiplied Your Laplace Transform Lately?
- Order: Reorder
- Duration: 23:03
- Uploaded Date: 14 Mar 2024
- views: 85
Presented by:
Carey Witkov, Embry-Riddle Aeronautical University, Daytona Beach FL USA
https://qubeshub.org/community/groups/simiode/expo
Abstract: The ...
Presented by:
Carey Witkov, Embry-Riddle Aeronautical University, Daytona Beach FL USA
https://qubeshub.org/community/groups/simiode/expo
Abstract: The Laplace transform plays an important role in the teaching of differential equations because it is one of the few methods capable of dealing with discontinuous forcing functions. A century ago, John Renshaw Carson of AT&T, in placing Heaviside's operational calculus on a sound footing, introduced an integral that looks the same as the modern Laplace transform except that it includes p-multiplication (where Carson, like Heaviside, used p for the differential operator). P-multiplication was used: (i) for consistency with Heaviside's operational forms (no longer relevant today), (ii) because it gives 1 for the operational form of the step function (instead of 1 for the impulse function as in the Laplace transform); and because (iii) p-multiplication can lead to algebraic simplification in some applications.
As p-multiplied Laplace transforms have recently seen greater use (now called the Laplace-Carson transform), this talk explores the advantages and disadvantages of the p-multiplied form of the Laplace transform. Two areas of applications are in the transform representation of discontinuous functions (e.g., those used in wavelet analysis) and in the solution of certain integral equations. Conversion of differential equations into integral equations is also discussed.
https://wn.com/Have_You_P_Multiplied_Your_Laplace_Transform_Lately
Presented by:
Carey Witkov, Embry-Riddle Aeronautical University, Daytona Beach FL USA
https://qubeshub.org/community/groups/simiode/expo
Abstract: The Laplace transform plays an important role in the teaching of differential equations because it is one of the few methods capable of dealing with discontinuous forcing functions. A century ago, John Renshaw Carson of AT&T, in placing Heaviside's operational calculus on a sound footing, introduced an integral that looks the same as the modern Laplace transform except that it includes p-multiplication (where Carson, like Heaviside, used p for the differential operator). P-multiplication was used: (i) for consistency with Heaviside's operational forms (no longer relevant today), (ii) because it gives 1 for the operational form of the step function (instead of 1 for the impulse function as in the Laplace transform); and because (iii) p-multiplication can lead to algebraic simplification in some applications.
As p-multiplied Laplace transforms have recently seen greater use (now called the Laplace-Carson transform), this talk explores the advantages and disadvantages of the p-multiplied form of the Laplace transform. Two areas of applications are in the transform representation of discontinuous functions (e.g., those used in wavelet analysis) and in the solution of certain integral equations. Conversion of differential equations into integral equations is also discussed.
- published: 14 Mar 2024
- views: 85
2:50
AT&T Archives: Single Sideband, a 1977 film about microwave transmission
- Order: Reorder
- Duration: 2:50
- Uploaded Date: 23 Jan 2014
- views: 119878
See more from the AT&T Archives at http://techchannel.att.com/archives
This short film, made by Bell Laboratories in 1977, gives a basic overview of what singl...
See more from the AT&T Archives at http://techchannel.att.com/archives
This short film, made by Bell Laboratories in 1977, gives a basic overview of what single-sideband transmission consists of, and why it was implemented in the phone system that year. Single sideband transmission allowed the Bell System to carry a greater number of data, voice, and broadcast signals along the microwave network.
Single Sideband transmission was first recognized during the first overseas radio transmission tests conducted by the Bell System in concert with the U.S. Navy, in 1915. These tests took place at the U.S. Naval Radio Station in Arlington, Virginia, and were overseen by Harold D. Arnold of Bell Telephone (Bell Laboratories was formed later, in 1925). The tests built on scientific work by Raymond A. Heising and John Renshaw Carson at Bell Telephone and Western Electric.
The first cross-country microwave network call was placed in 1951. By 1977, the Bell System's microwave network carried 70% of the long-distance transmissions in the United States.
In 1974-77, new single sideband systems were tested in Georgia and Massachusetts: the plan was to bring this increased transmission capacity to the long distance network by 1980.
The microwave network continued to shoulder the bulk of the company's transmission capacity for another decade or so, but required a line-of-sight connection. As fiber optic transmission research and digital switching technologies made great strides in the 1980s, it became more feasible to fit a greater amount of information through fiber optic lines rather than relying on the microwave system.
The 1977 Massachusetts single sideband tests were of the AR6A system. A 1983 issue of the Bell System Technical Journal explains this technology and how it came about.
Footage Courtesy of AT&T Archives and History Center, Warren, NJ
https://wn.com/At_T_Archives_Single_Sideband,_A_1977_Film_About_Microwave_Transmission
See more from the AT&T Archives at http://techchannel.att.com/archives
This short film, made by Bell Laboratories in 1977, gives a basic overview of what single-sideband transmission consists of, and why it was implemented in the phone system that year. Single sideband transmission allowed the Bell System to carry a greater number of data, voice, and broadcast signals along the microwave network.
Single Sideband transmission was first recognized during the first overseas radio transmission tests conducted by the Bell System in concert with the U.S. Navy, in 1915. These tests took place at the U.S. Naval Radio Station in Arlington, Virginia, and were overseen by Harold D. Arnold of Bell Telephone (Bell Laboratories was formed later, in 1925). The tests built on scientific work by Raymond A. Heising and John Renshaw Carson at Bell Telephone and Western Electric.
The first cross-country microwave network call was placed in 1951. By 1977, the Bell System's microwave network carried 70% of the long-distance transmissions in the United States.
In 1974-77, new single sideband systems were tested in Georgia and Massachusetts: the plan was to bring this increased transmission capacity to the long distance network by 1980.
The microwave network continued to shoulder the bulk of the company's transmission capacity for another decade or so, but required a line-of-sight connection. As fiber optic transmission research and digital switching technologies made great strides in the 1980s, it became more feasible to fit a greater amount of information through fiber optic lines rather than relying on the microwave system.
The 1977 Massachusetts single sideband tests were of the AR6A system. A 1983 issue of the Bell System Technical Journal explains this technology and how it came about.
Footage Courtesy of AT&T Archives and History Center, Warren, NJ
- published: 23 Jan 2014
- views: 119878
27:35
Fundamentals of FM and RF Technology
- Order: Reorder
- Duration: 27:35
- Uploaded Date: 12 Dec 2020
- views: 174
FECN01E
(C) Video - Rohde & Schwarz
Understanding Frequency Modulation - https://youtu.be/gFu7-7lUGDg
What is RF? - https://youtu.be/WPjniblApwk
FECN01E
(C) Video - Rohde & Schwarz
Understanding Frequency Modulation - https://youtu.be/gFu7-7lUGDg
What is RF? - https://youtu.be/WPjniblApwk
https://wn.com/Fundamentals_Of_Fm_And_Rf_Technology
FECN01E
(C) Video - Rohde & Schwarz
Understanding Frequency Modulation - https://youtu.be/gFu7-7lUGDg
What is RF? - https://youtu.be/WPjniblApwk
- published: 12 Dec 2020
- views: 174
3:51
“Bluerock” by Cayson Renshaw
- Order: Reorder
- Duration: 3:51
- Uploaded Date: 01 May 2022
- views: 350
Music video for “Bluerock” by Cayson Renshaw, from the album “What If I Told You”
Music: Cayson Renshaw
https://open.spotify.com/artist/2hVHQSQmwraIZSyISHOWEf
...
Music video for “Bluerock” by Cayson Renshaw, from the album “What If I Told You”
Music: Cayson Renshaw
https://open.spotify.com/artist/2hVHQSQmwraIZSyISHOWEf
https://artlist.io/
Video: Azulroto
https://azulroto.com/
https://artgrid.io
Lyrics:
I found that photo in the sofa
And it’s form way back in ‘01
So I guess there’s much I never told you
Like who I am, who I love, where I been and where I came from
Grew up on 913 of Bluerock
Memories of six kids running ‘round those halls
Then out in the California sunshine
We wore no shoes, threw alley oops, and shattered windows throwing baseballs
Ooh, ooh, ooh
Mom packed me a brown bag everyday
From five years old, up to eighteen
A note that said “I love you. XO”
And all my friends there begging me, making bids on mom’s fresh cookies
And I quite playing ball and age fifteen
Traded my new bat for an old guitar
It broke dad’s heart, but he still loved me
And he was there at every show
No more jersey, just tuxedos
Ooh, ooh, ooh
https://wn.com/“Bluerock”_By_Cayson_Renshaw
Music video for “Bluerock” by Cayson Renshaw, from the album “What If I Told You”
Music: Cayson Renshaw
https://open.spotify.com/artist/2hVHQSQmwraIZSyISHOWEf
https://artlist.io/
Video: Azulroto
https://azulroto.com/
https://artgrid.io
Lyrics:
I found that photo in the sofa
And it’s form way back in ‘01
So I guess there’s much I never told you
Like who I am, who I love, where I been and where I came from
Grew up on 913 of Bluerock
Memories of six kids running ‘round those halls
Then out in the California sunshine
We wore no shoes, threw alley oops, and shattered windows throwing baseballs
Ooh, ooh, ooh
Mom packed me a brown bag everyday
From five years old, up to eighteen
A note that said “I love you. XO”
And all my friends there begging me, making bids on mom’s fresh cookies
And I quite playing ball and age fifteen
Traded my new bat for an old guitar
It broke dad’s heart, but he still loved me
And he was there at every show
No more jersey, just tuxedos
Ooh, ooh, ooh
- published: 01 May 2022
- views: 350
35:19
Angle Modulation
- Order: Reorder
- Duration: 35:19
- Uploaded Date: 29 Jul 2020
- views: 57
- published: 29 Jul 2020
- views: 57
47:20
The History of Single Sideband
- Order: Reorder
- Duration: 47:20
- Uploaded Date: 19 Aug 2021
- views: 50597
Single sideband modulation revolutionized electronic communication, but where did the idea come from? Antique Wireless Association Curator Emeritus Ed Gable, K2...
Single sideband modulation revolutionized electronic communication, but where did the idea come from? Antique Wireless Association Curator Emeritus Ed Gable, K2MP, tells the surprising story of single sideband, its origins, the developers, companies and the hardware that brought it to the forefront of wireless communication. This presentation is the first of the AWA's monthly "AWA Shares" series.
If you enjoyed this video, consider becoming a member of the Antique Wireless Association at: https://antiquewireless.org/homepage/membership/
Subscribe to the Antique Wireless Museum channel and you'll receive news of our latest video uploads.
https://wn.com/The_History_Of_Single_Sideband
Single sideband modulation revolutionized electronic communication, but where did the idea come from? Antique Wireless Association Curator Emeritus Ed Gable, K2MP, tells the surprising story of single sideband, its origins, the developers, companies and the hardware that brought it to the forefront of wireless communication. This presentation is the first of the AWA's monthly "AWA Shares" series.
If you enjoyed this video, consider becoming a member of the Antique Wireless Association at: https://antiquewireless.org/homepage/membership/
Subscribe to the Antique Wireless Museum channel and you'll receive news of our latest video uploads.
- published: 19 Aug 2021
- views: 50597
53:40
Lecture 8 - FM Bandwidth and Demodulation
- Order: Reorder
- Duration: 53:40
- Uploaded Date: 12 Apr 2021
- views: 723
ELEC202 Communication Systems
FM Bandwidth and Demodulation
ELEC202 Communication Systems
FM Bandwidth and Demodulation
https://wn.com/Lecture_8_Fm_Bandwidth_And_Demodulation
ELEC202 Communication Systems
FM Bandwidth and Demodulation
- published: 12 Apr 2021
- views: 723
1:00:34
Steinmetz and the Principle of Incommensurability
- Order: Reorder
- Duration: 1:00:34
- Uploaded Date: 07 May 2019
- views: 31562
This video is a review of the first two chapters of a book by Charles P. Steinmetz called "Elementary Lectures on Electric Discharges, Waves and Impulses and ot...
This video is a review of the first two chapters of a book by Charles P. Steinmetz called "Elementary Lectures on Electric Discharges, Waves and Impulses and other Transients
Here is a link to Steinmetz's original lectures.
http://www.tfcbooks.com/e-books/elementary_lectures.pdf
Here is a link to my short paper showing the analogy and incommensurability between the dielectric and magnetic fields.
https://www.researchgate.net/publication/332886426_Steinmetz_Analogy_Between_Magnetic_and_Dielectric
https://wn.com/Steinmetz_And_The_Principle_Of_Incommensurability
This video is a review of the first two chapters of a book by Charles P. Steinmetz called "Elementary Lectures on Electric Discharges, Waves and Impulses and other Transients
Here is a link to Steinmetz's original lectures.
http://www.tfcbooks.com/e-books/elementary_lectures.pdf
Here is a link to my short paper showing the analogy and incommensurability between the dielectric and magnetic fields.
https://www.researchgate.net/publication/332886426_Steinmetz_Analogy_Between_Magnetic_and_Dielectric
- published: 07 May 2019
- views: 31562
6:45
Understanding Frequency Modulation
This video explains the fundamental concepts behind frequency modulation (FM), common appl...
published: 02 Apr 2020
Understanding Frequency Modulation
Understanding Frequency Modulation
- Report rights infringement
- published: 02 Apr 2020
- views: 119338
This video explains the fundamental concepts behind frequency modulation (FM), common applications of FM signals, the difference between narrowband and wideband FM, and how FM signals are measured.
More information about Rohde & Schwarz Signal Generators: https://www.rohde-schwarz.com/us/products/test-and-measurement/signal-generators/pg_overview_63667.html?cid=802_us_smo_ALL__20-09_a______yt_TMfundmntls_Frequency-Modulation
Need help with Rohde & Schwarz products & services?
Contact Us: https://www.rohde-schwarz.com/us/m4c/contact-us_253202.html?cid=802_us_smo_ALL__20-08_i______yt_TMfundmntls_
2:30
Radio Shack CB Radio
Radio Shack Realistic TRS -47 CB Radio
Ever wonder how many of you remember the old radio ...
published: 10 Nov 2023
Radio Shack CB Radio
Radio Shack CB Radio
- Report rights infringement
- published: 10 Nov 2023
- views: 11
Radio Shack Realistic TRS -47 CB Radio
Ever wonder how many of you remember the old radio models? The ones that your grandparents or maybe even your parents used to fiddle with? Perhaps you've even seen one in an antique store or at a flea market. One of those old models is the Realistic's TRC-47, a citizens Band AM/SSB radio, released back in 1974. This radio, believe it or not, was considered a top-tier entry-level radio in its time. It came with 23 channels, and controls for volume, squelch, R.F., and gain. It also featured a Clarifier circuit, a nifty little innovation that significantly improved the audio quality for both receiving and transmitting. But what's with the acronyms, you ask? Well, SSB stands for single sideband, and AM? That's amplitude modulation. The TRC-47 is an all-crystal radio. It has an AM band, an upper sideband, and a lower sideband. A sideband, in case you're curious, is a term coined by the Institute of Electrical and Electronics Engineers, or the IEEE, for a part of the microwave band of the electromagnetic spectrum. This spectrum covers frequencies from two to four gigahertz. Now, the S band is quite widely used. It's employed by airport surveillance radar for air traffic control, weather radar, surface ship radar, and even some communications satellites. NASA, for instance, uses the S band to communicate with the Space Shuttle and the International Space Station. The concept of amplitude modulation for single-sideband operation was first mathematically analyzed by John Renshaw Carson in 1915. Carson's work was instrumental in advancing transatlantic communications and military operations, the effects of which we reap in today's aerial communications. Sure, this radio may seem irrelevant and dated in today's world, but the technology it houses played a crucial role in historical events like World War II and even the moon landing. Classified in the Class D category, this radio doesn't require any age, citizenship, or license requirements to operate in the United States. It falls under the "License by Rule" part of the FCC rules. Essentially, if you abide by the rules, you're considered licensed. While this radio still functions, the question remains - who will you communicate with? The world has largely moved on from this form of entertainment communication. But who knows, maybe there's still someone out there, tuning into their TRC-47, waiting for your broadcast.
My Bad! The title says TRS-47 & the video title says TRC-47. TRC-47 is a military term for an old military radio that is still stuck in my head.
23:03
Have You P-multiplied Your Laplace Transform Lately?
Presented by:
Carey Witkov, Embry-Riddle Aeronautical University, Daytona Beach FL U...
published: 14 Mar 2024
Have You P-multiplied Your Laplace Transform Lately?
Have You P-multiplied Your Laplace Transform Lately?
- Report rights infringement
- published: 14 Mar 2024
- views: 85
Presented by:
Carey Witkov, Embry-Riddle Aeronautical University, Daytona Beach FL USA
https://qubeshub.org/community/groups/simiode/expo
Abstract: The Laplace transform plays an important role in the teaching of differential equations because it is one of the few methods capable of dealing with discontinuous forcing functions. A century ago, John Renshaw Carson of AT&T, in placing Heaviside's operational calculus on a sound footing, introduced an integral that looks the same as the modern Laplace transform except that it includes p-multiplication (where Carson, like Heaviside, used p for the differential operator). P-multiplication was used: (i) for consistency with Heaviside's operational forms (no longer relevant today), (ii) because it gives 1 for the operational form of the step function (instead of 1 for the impulse function as in the Laplace transform); and because (iii) p-multiplication can lead to algebraic simplification in some applications.
As p-multiplied Laplace transforms have recently seen greater use (now called the Laplace-Carson transform), this talk explores the advantages and disadvantages of the p-multiplied form of the Laplace transform. Two areas of applications are in the transform representation of discontinuous functions (e.g., those used in wavelet analysis) and in the solution of certain integral equations. Conversion of differential equations into integral equations is also discussed.
2:50
AT&T Archives: Single Sideband, a 1977 film about microwave transmission
See more from the AT&T Archives at http://techchannel.att.com/archives
This short film, m...
published: 23 Jan 2014
AT&T Archives: Single Sideband, a 1977 film about microwave transmission
AT&T Archives: Single Sideband, a 1977 film about microwave transmission
- Report rights infringement
- published: 23 Jan 2014
- views: 119878
See more from the AT&T Archives at http://techchannel.att.com/archives
This short film, made by Bell Laboratories in 1977, gives a basic overview of what single-sideband transmission consists of, and why it was implemented in the phone system that year. Single sideband transmission allowed the Bell System to carry a greater number of data, voice, and broadcast signals along the microwave network.
Single Sideband transmission was first recognized during the first overseas radio transmission tests conducted by the Bell System in concert with the U.S. Navy, in 1915. These tests took place at the U.S. Naval Radio Station in Arlington, Virginia, and were overseen by Harold D. Arnold of Bell Telephone (Bell Laboratories was formed later, in 1925). The tests built on scientific work by Raymond A. Heising and John Renshaw Carson at Bell Telephone and Western Electric.
The first cross-country microwave network call was placed in 1951. By 1977, the Bell System's microwave network carried 70% of the long-distance transmissions in the United States.
In 1974-77, new single sideband systems were tested in Georgia and Massachusetts: the plan was to bring this increased transmission capacity to the long distance network by 1980.
The microwave network continued to shoulder the bulk of the company's transmission capacity for another decade or so, but required a line-of-sight connection. As fiber optic transmission research and digital switching technologies made great strides in the 1980s, it became more feasible to fit a greater amount of information through fiber optic lines rather than relying on the microwave system.
The 1977 Massachusetts single sideband tests were of the AR6A system. A 1983 issue of the Bell System Technical Journal explains this technology and how it came about.
Footage Courtesy of AT&T Archives and History Center, Warren, NJ
27:35
Fundamentals of FM and RF Technology
FECN01E
(C) Video - Rohde & Schwarz
Understanding Frequency Modulation - https://youtu.b...
published: 12 Dec 2020
Fundamentals of FM and RF Technology
Fundamentals of FM and RF Technology
- Report rights infringement
- published: 12 Dec 2020
- views: 174
FECN01E
(C) Video - Rohde & Schwarz
Understanding Frequency Modulation - https://youtu.be/gFu7-7lUGDg
What is RF? - https://youtu.be/WPjniblApwk
3:51
“Bluerock” by Cayson Renshaw
Music video for “Bluerock” by Cayson Renshaw, from the album “What If I Told You”
Music: ...
published: 01 May 2022
“Bluerock” by Cayson Renshaw
“Bluerock” by Cayson Renshaw
- Report rights infringement
- published: 01 May 2022
- views: 350
Music video for “Bluerock” by Cayson Renshaw, from the album “What If I Told You”
Music: Cayson Renshaw
https://open.spotify.com/artist/2hVHQSQmwraIZSyISHOWEf
https://artlist.io/
Video: Azulroto
https://azulroto.com/
https://artgrid.io
Lyrics:
I found that photo in the sofa
And it’s form way back in ‘01
So I guess there’s much I never told you
Like who I am, who I love, where I been and where I came from
Grew up on 913 of Bluerock
Memories of six kids running ‘round those halls
Then out in the California sunshine
We wore no shoes, threw alley oops, and shattered windows throwing baseballs
Ooh, ooh, ooh
Mom packed me a brown bag everyday
From five years old, up to eighteen
A note that said “I love you. XO”
And all my friends there begging me, making bids on mom’s fresh cookies
And I quite playing ball and age fifteen
Traded my new bat for an old guitar
It broke dad’s heart, but he still loved me
And he was there at every show
No more jersey, just tuxedos
Ooh, ooh, ooh
47:20
The History of Single Sideband
Single sideband modulation revolutionized electronic communication, but where did the idea...
published: 19 Aug 2021
The History of Single Sideband
The History of Single Sideband
- Report rights infringement
- published: 19 Aug 2021
- views: 50597
Single sideband modulation revolutionized electronic communication, but where did the idea come from? Antique Wireless Association Curator Emeritus Ed Gable, K2MP, tells the surprising story of single sideband, its origins, the developers, companies and the hardware that brought it to the forefront of wireless communication. This presentation is the first of the AWA's monthly "AWA Shares" series.
If you enjoyed this video, consider becoming a member of the Antique Wireless Association at: https://antiquewireless.org/homepage/membership/
Subscribe to the Antique Wireless Museum channel and you'll receive news of our latest video uploads.
53:40
Lecture 8 - FM Bandwidth and Demodulation
ELEC202 Communication Systems
FM Bandwidth and Demodulation
published: 12 Apr 2021
Lecture 8 - FM Bandwidth and Demodulation
Lecture 8 - FM Bandwidth and Demodulation
- Report rights infringement
- published: 12 Apr 2021
- views: 723
ELEC202 Communication Systems
FM Bandwidth and Demodulation
1:00:34
Steinmetz and the Principle of Incommensurability
This video is a review of the first two chapters of a book by Charles P. Steinmetz called ...
published: 07 May 2019
Steinmetz and the Principle of Incommensurability
Steinmetz and the Principle of Incommensurability
- Report rights infringement
- published: 07 May 2019
- views: 31562
This video is a review of the first two chapters of a book by Charles P. Steinmetz called "Elementary Lectures on Electric Discharges, Waves and Impulses and other Transients
Here is a link to Steinmetz's original lectures.
http://www.tfcbooks.com/e-books/elementary_lectures.pdf
Here is a link to my short paper showing the analogy and incommensurability between the dielectric and magnetic fields.
https://www.researchgate.net/publication/332886426_Steinmetz_Analogy_Between_Magnetic_and_Dielectric
John Renshaw Carson
John Renshaw Carson (June 28, 1886 – October 31, 1940) was a noted transmission theorist for early communications systems. He invented single-sideband modulation.
Biography
Carson was born in Pittsburgh, Pennsylvania, graduated from Princeton University in 1907 with a Bachelor of Science degree, and attended Massachusetts Institute of Technology 1907–1908 before returning to Princeton to receive his electrical engineering degree in 1909 and a Master of Science degree in 1912. From 1912 to 1914 Carson was an instructor in Electrical Engineering and Physics at Princeton, but in 1913 was offered a position at American Telephone & Telegraph (AT&T), and in 1914 left the university.
At AT&T, Carson was involved in early radio telephone experiments. In 1915 he inventedsingle-sideband modulation to transmit multiple telephone calls simultaneously on a single electrical circuit, and was responsible for installing the first such system between Pittsburgh and Baltimore. In 1922 he published a mathematical treatment of frequency modulation (FM), which introduced the Carson bandwidth rule. In his 1922 paper, Carson presented a negative opinion of narrowband FM, which occurs when the maximum frequency swing is made narrower than the audio bandwidth. Later, Edwin Armstrong managed to demonstrate that FM can be advantageous if the frequency swing is significantly wider than the audio bandwidth. From 1917 to 1925 Carson analyzed the effects of filters on amplitude modulation via operational calculus, thus allowing telephone system designers to predict crosstalk in multiple calls over a single pair of wires. He published a series of papers on this subject in the Bell System Technical Journal, culminating in his 1926 book Electrical Circuit Theory and Operational Calculus.
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/John_Renshaw_Carson
Understanding Frequency Modulation...
Radio Shack CB Radio...
Have You P-multiplied Your Laplace Transform Latel...
AT&T Archives: Single Sideband, a 1977 film about ...
Fundamentals of FM and RF Technology...
“Bluerock” by Cayson Renshaw...
Angle Modulation...
The History of Single Sideband...
Lecture 8 - FM Bandwidth and Demodulation...