Podcasts about extra class

This show has been flagged as Clean by the host. Hello again. this is Trey. This is part 2 in my Cheap Yellow Display (CYD) Project series. You can find Part 1 in episode 4472 . We previously left our handy hero learning about the technology of the CYD, but without a compelling reason to begin using one. As we rejoin the topic, it was Winter Field Day 2025 (Jan 25 & 26, 2025). Winter Field Day is an annual event where amateur radio operators from around the world gather some portable radio equipment and setup somewhere away from their normal base of operations. It is designed to encourage operators to practice their emergency preparedness skills in unfavorable weather. Usually, they will run their equipment using batteries or generators. I chose this day because I knew there would be a good amount of radio traffic. I had just finished tuning my first handmade inverted-V dipole antenna for use on the 10 meter amateur radio bands. These span 28 MHz to 29.700 MHz. I had the antenna connected to a 10 meter transceiver to listen in on the radio traffic. Yes, I will include pictures of the antenna in the show notes. Scanning through the lower end of the band resulted in receiving a number of very strong continuous wave signals. Continuous wave, is abbreviated CW in amateur radio circles, and it stands for morse code signals transmitted over radio frequencies. The tones indicating dots and dashes of Morse code were clearly audible through the radio's speaker. "WAIT! STOP! Time out!!" I can hear you shouting as you listen. "This is supposed to be a discussion of the ESP32 CYD. What does this have to do with amateur radio?" You are absolutely right. Now hold your horses and we will get there. I barely learned Morse code as a child, and I used it a bit as an aviator in the '90s (while always being able to reference a visual representation of the Morse beside the actual letters). Thus, I never became proficient. Shortly after Winter Field Day 2025, I began taking lessons on Morse code, with the goal of becoming proficient at both sending and receiving at around 20 words per minute. This training may be a topic for another episode in a different series, as my journey advances. Scanning further up the band, I also identified some digital transmissions (Probably FT-8) and many voice transmissions. The antenna was working, at least for receiving. For a little back history, I have held an amateur radio license since 2016, and quickly progressed all the way to an Extra Class, giving me permission to use all of the amateur radio frequencies allowed within the United States in the High Frequency (HF), Very High Frequency (VHF), and Ultra High Frequency (UHF) bands. However, to this point, I have only operated in the VHF and UHF bands, and have done so using mobile and handheld transceivers. I inherited some HF equipment from a close friend who went silent key in 2023, and I was only now trying to use it. You can learn more about my friend, and about the term "Silent Key" in episode HPR3922 https://www.hackerpublicradio.org/eps/hpr3922/index.html ) On field day, there was far too much traffic, and it was too intimidating for me to make my first attempt at transmitting on the HF bands. This would have to wait until later. But I did need to determine how well my antenna would transmit. I began to ponder my options. I really did not want to talk to anyone until I had listened to more QSOs and I could implement proper practices. The term QSO the amateur radio term for radio conversations. I also have no interest in digital modes (yet). I like the simplicity of voice and CW. There I am, back at Morse code again. What if there was a way that I could transmit a signal in Morse code and get reliable feedback on signal propagation, without the need to try to reply to any responses? It would need to be an accurate, repeatable, properly structured and timed Morse code transmission, more than my training (at that point, or even this point) could accomplish. This was something to think about. And think about. And think about... Tune in to the next episode in the series to learn where these thoughts led me, and how all this relates to my CYD project. Provide feedback on this episode.

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We explore the big philosophical questions at the heart of Marxism. Does Marxism require a supplementary philosophy such as Nietzscheanism or Freudianism to properly ground its practice? How have the changing material conditions post-2008 shaped Marxist thought and practice? What is the best Marxist response to speculative realism, a major movement in contemporary philosophy? To explore these questions we are joined by Marxist scholar and writer Conrad Hamilton who is currently a postdoctoral research fellow at East China Normal University. Hamilton is the author of the forthcoming book, Marxism Contra Subjectivity (forthcoming from Brill) which looks at the philosophical impasses facing Marxism in a post-2008 conjuncture, with a particular focus on speculative realism, Althusserianism and different strains of French Marxism. We begin our discussion with Hamilton's analysis of Nietzsche's place in Marxism after World War II. We focus on Hamilton's recent essay on Nietzsche and French thought and his review of my book How to Read Like a Parasite. We then discuss some of the ideas in his forthcoming book on Marxism, philosophy and epistemology. Stay tuned for a symposium on Hamilton's book hosted by our study collective when it comes out. -------- Chapters: 0:00 - Introduction to Conrad Hamilton 4:11 - Recurrent Reaction: Nietzsche and the Thought of the French Middle Strata 21:10 - Nietzschean Appropriations and Marxism after World War II 30:17 - The Problems with the Nietzschean "extra class" left 48:30 - Does Marxism require a comprehensive philosophy? 1:12:10 - Speculative Realism, Real Abstraction and Marxism post-2008 1:22:20 - Where is the subject of the proletariat today? 1:43:50 - Why does philosophy matter to political Marxism? Show Notes: "The Monsters We Become" by Conrad Hamilton (https://cosmonautmag.com/2024/05/the-monsters-we-become-on-how-to-read-like-a-parasite) "Recurrent Reaction: Nietzsche and the Thought of the French Middle Strata" by Conrad Hamilton (https://link.springer.com/book/10.1007/978-3-031-13635-1)

E9H Receiving Antennas: radio direction finding antennas, Beverage antennas, specialized receiving antennas, long-wire receiving antennas. 40:29

E9H Receiving Antennas: radio direction finding antennas, Beverage antennas, specialized receiving antennas, long-wire receiving antennas. 40:29

E9G The Smith chart 36:52

E9G The Smith chart 36:52

E9F Transmission lines: characteristics of open and shorted feed lines, coax versus open-wire, velocity factor, electrical length, coaxial cable dielectrics. 49:59

E9F Transmission lines: characteristics of open and shorted feed lines, coax versus open-wire, velocity factor, electrical length, coaxial cable dielectrics. 49:59

E9E Matching: Matching Antennas to Feed Lines, Phasing Lines, and Power Dividers. 42:12

E9E Matching: Matching Antennas to Feed Lines, Phasing Lines, and Power Dividers. 42:12

E9D Yagi antennas, parabolic reflectors, circular polarization, loading coils, top loading, feed point impedance of electrically short antennas, antenna Q, RF grounding. 47:13

E9D Yagi antennas, parabolic reflectors, circular polarization, loading coils, top loading, feed point impedance of electrically short antennas, antenna Q, RF grounding. 47:13

In this episode, we join Martin Butler M1MRB, Chris Howard (M0TCH), Martin Rothwell (M0SGL), Frank Howell (K4FMH), Bill Barnes (WC3B) and Leslie Butterfields (G0CIB) to discuss the latest Amateur / Ham Radio news. Colin Butler (M6BOY) rounds up the news in brief and the episode's feature is Quansheng UV-K5 SDR We would like to thank an our monthly and annual subscription donors for keeping the podcast advert free. To donate, please visit - http://www.icqpodcast.com/donate Ofcom Amateur Radio Consultation Statement WRC-23: Week-3 Update – 23cm and WPT ARRL RF Safety Committee Develops New Guidelines to Communicate RF Safety HAMSCI Releases First Solar Eclipse Findings ‘First light': NASA receives laser-beamed message from 10 million miles away New Amateur Extra-Class Question Pool Released Proposal Submitted to ESA for Geostationary Microwave Amateur Payload

E9C Practical wire antennas, folded dipoles, phased arrays, effects of ground near antennas. 42:25

E9C Practical wire antennas, folded dipoles, phased arrays, effects of ground near antennas. 42:25

E9B Antenna patterns and designs: E and H plane patterns, gain as a function of pattern,antenna modeling. 38:09

E9B Antenna patterns and designs: E and H plane patterns, gain as a function of pattern,antenna modeling. 38:09

E9A Basic Antenna parameters: radiation resistance, gain, beamwidth, efficiency, effective radiated power. 57:59

E9A Basic Antenna parameters: radiation resistance, gain, beamwidth, efficiency, effective radiated power. 57:59

E8D Keying defects and overmodulation of digital signals, digital codes, spread spectrum 51:57

E8D Keying defects and overmodulation of digital signals, digital codes, spread spectrum 51:57

E8C Digital signals: digital communication modes, information rate vs. bandwidth, error correction. 47:43

E8C Digital signals: digital communication modes, information rate vs. bandwidth, error correction. 47:43

E8B Modulation and demodulation: modulation methods, modulation index and deviation ratio, frequency and time division multiplexing, Orthogonal Frequency Division Multiplexing and balanced modulators, detectors, mixer stages. 58:29

E8B Modulation and demodulation: modulation methods, modulation index and deviation ratio, frequency and time division multiplexing, Orthogonal Frequency Division Multiplexing and balanced modulators, detectors, mixer stages. 58:29

E7H Oscillators and signal sources: types of oscillators, synthesizers and phase-locked loops, direct digital synthesizers, stabilizing thermal drift, microphonics, high-accuracy oscillators. 59:40

E7H Oscillators and signal sources: types of oscillators, synthesizers and phase-locked loops, direct digital synthesizers, stabilizing thermal drift, microphonics, high-accuracy oscillators. 59:40

E7G Active filters and op-amp circuits: active audio filters, characteristics, basic circuit design, operational amplifiers. 51:22

E7G Active filters and op-amp circuits: active audio filters, characteristics, basic circuit design, operational amplifiers. 51:22

E7F DSP filtering and other operations, software defined radio fundamentals, DSP modulation and demodulation. 1:00:07

E7F DSP filtering and other operations, software defined radio fundamentals, DSP modulation and demodulation. 1:00:07

Another rapid turnaround sees Natalie, Rich & George casting an eye over the hard fought win at Luton before turning their sights to an equally tricky looking trip to Milwall tonight. We also have an FPL Update from Adam. We hear from Mickey from That Milwall Podcast, Statman Dave calls in with his Head to Heads & Memory Match & the panel discuss Milwall's celebrity fans, which sparks an unexpected debate about Harry Potter! Hosted on Acast. See acast.com/privacy for more information.

E7E Modulation and demodulation: reactance, phase and balanced modulators, detectors, mixer stages. 48:54

E7E Modulation and demodulation: reactance, phase and balanced modulators, detectors, mixer stages. 48:54

E7D Power supplies and voltage regulators, Solar array charge controllers. 1:01:03

E7D Power supplies and voltage regulators, Solar array charge controllers. 1:01:03

E7C Filters and matching networks: types of networks, types of filters, filter applications, filter characteristics, impedance matching, DSP filtering. 51:19

E7B Amplifiers:(part 2 of 2) Class of operation, vacuum tube and solid-state circuits, distortion and intermodulation, spurious and parasitic suppression, microwave amplifiers, switching-type amplifiers. 54:01

E7B Amplifiers:(part 2 of 2) Class of operation, vacuum tube and solid-state circuits, distortion and intermodulation, spurious and parasitic suppression, microwave amplifiers, switching-type amplifiers. 54:01

E7B Amplifiers:(part 1 of 2) Class of operation, vacuum tube and solid-state circuits, distortion and intermodulation, spurious and parasitic suppression, microwave amplifiers, switching-type amplifiers. 1:11:47

E7A Digital circuits: digital circuit principles and logic circuits, classes of logic elements, positive and negative logic, frequency dividers, truth tables. 1:03:53

E6F Electro-optical technology: photoconductivity, photovoltaic devices, optical sensors and encoders, optical isolation. 50:38

E6E Analog ICs: MMICs, IC packaging characteristics 42:03

E6D Toroidal and Solenoidal Inductors: permeability, core material, selecting, winding, transformers, piezoelectric devices. 56:54

E6C Digital ICs: Families of digital ICs, gates, Programmable Logic Devices (PLDs). 51:15

E6B Diodes 50:11