LHS Episode #552: Proxmox VE Deep Dive

Hello and welcome to the 552nd episode of Linux in the Ham Shack. In this episode, the hosts take a preliminary deep dive into the Proxmox virtualization environment. Proxmox is a replacement for VMware ESXi or other virtualization platforms. Topics include features, installation procedure, VM configuration, networking and disk provisioning options, ESXi migration and much more. Thanks for listening and have a great week.


Russ Woodman, K5TUX, co-hosts the Linux in the Ham Shack podcast which is available for download in both MP3 and OGG audio format. Contact him at [email protected].

Livestream: Space WX, Propagation, Amateur Radio – Sundays

Join us, every Sunday at 21:15 UTC (5:15 PM, Eastern Daylight Time, 4:15 PM Standard), for an informal livestream chat session about:
– current space weather — the Sun/Earth connection — including sunspot activity, solar x-ray flares, and geomagnetic activity, as well as,
– current radio signal propagation conditions on the shortwave (high-frequency, or HF) radio spectrum. We also discuss,
– amateur (ham) radio, shortwave radio, and other related topics such as HF antennas (dipoles, doublets, Yagi antennas, and so on).
You can ask questions, and we will discuss some of them now, and some of them in upcoming videos.
Join us every Sunday for Livestream at 21:15 UTC

Join us every Sunday for Livestream at 21:15 UTC

Don’t forget to click ‘Subscribe’, ‘Join’, then, set the Alert Bell to “All” – so you don’t miss any session! You can ask your questions early, on this post.
Every livestream is posted here, so bookmark this link:  https://www.youtube.com/@nw7us/streams
See you there!

Visit, subscribe: NW7US Radio Communications and Propagation YouTube Channel

The Talisman Radio

Lately, I’ve encountered many people who apparently believe their radio is a Talisman. What is a Talisman, you say?

Talisman – An object marked with magical signs and believed to confer on its bearer supernatural powers or protection.

These people purchase some kind of two-way radio and have it stored away in their desk or closet, believing that having it will confer communication powers during an emergency. (Not to pick on Baofeng owners, but these radios are almost always a Baofeng UV-5R.)  In many cases, they have the radio programmed with a long list of radio frequencies that have been identified as being good to have during an emergency. These are usually a mix of amateur radio, Family Radio Service, General Mobile Radio Service, Multi-Use Radio Service, search and rescue, and local fire and police frequencies.

Usually, the owner of the Talisman Radio has no real idea of how these frequencies are used. Again, someone told them they are good frequencies to have in a SHTF scenario. They often don’t know how to operate the radio or know what to expect in terms of its communication capabilities. It is simply a magical device that will save them when bad stuff happens.

Sometimes these people take the basic step of getting their amateur radio Technician license. I applaud this decision as it is the first step towards learning about ham radio. It also provides the proper license for legally using the radio on the ham bands. Unfortunately, many of these people just memorize the questions long enough to pass the exam and don’t gain any useful knowledge. This is a fundamental error. A much better approach is to focus on acquiring skills, knowledge, and equipment as part of their emergency preparedness plans. (Serious preppers know and practice this.)

If you are the owner of a Talisman Radio, I urge you to build your skills and get your ham license (if you don’t already have it.) There are many good license books available and the Ham Radio School online course is an excellent approach to learning this material. If you encounter Talisman Radio owners, please encourage them to get some training and learn how to use the radio. Don’t offer to program their radio with a bunch of frequencies they are not licensed to use and that may cause considerable trouble in the frequency spectrum. Encourage and help them but don’t enable their dependence on a Talisman Radio that will only let them down.

Training, training, training.
That’s what I think. What’s your opinion?

73 Bob K0NR

 

The post The Talisman Radio appeared first on The KØNR Radio Site.


Bob Witte, KØNR, is a regular contributor to AmateurRadio.com and writes from Colorado, USA. Contact him at [email protected].

Vacuum Tubes – Electronics at Work: 1943 Educational Film

In the classic educational film titled “Electronics at Work,” produced by Westinghouse in 1943, viewers are introduced to the fascinating world of vacuum tubes. This film highlights the crucial role these devices played in both military and commercial sectors, including radio telecommunications, radar, and various industrial applications. The narrative suggests that vacuum tubes provided the United States with a significant advantage during World War II, particularly in enhancing communication and technology.

The Continuing Relevance of Vacuum Tubes

Despite advances in technology, vacuum tubes remain in use today for several applications, including:

– Transmitting radios
– Medical devices
– Audio amplification systems
– High-frequency applications

Understanding Vacuum Tubes

The film outlines the six basic functions of electronic tubes and illustrates how each type is employed in different industrial and military contexts.

Structure of a Vacuum Tube

A vacuum tube typically consists of two or more electrodes housed within a vacuum inside an airtight enclosure. Key features include:

– Electrode Types: Most vacuum tubes have glass envelopes, although some utilize ceramic or metal casings with insulating bases.

– Leads and Sockets: The electrodes connect to leads that pass through the envelope via an airtight seal. These leads often take the form of pins, allowing for easy replacement in a tube socket, as tubes were a common point of failure in electronic devices.

– Capacitive Design: Some tubes feature a top cap on the electrode to minimize interelectrode capacitance, enhancing high-frequency performance and maintaining safety by separating high voltages.

The Evolution of Vacuum Tubes

The earliest vacuum tubes emerged from incandescent light bulbs, which contained a heated filament sealed in an evacuated glass envelope. When heated, the filament releases electrons into the vacuum through a process known as thermionic emission.

– Electrode Functionality: A second electrode, known as the anode or plate, attracts these electrons if it holds a more positive voltage. This mechanism results in a flow of electrons from the filament (cathode) to the plate, creating an electric field due to the potential difference between them.

– Diode Function: A vacuum tube with two electrodes is termed a diode, which functions as a rectifier. Diodes allow current to flow in only one direction, converting alternating current (AC) into pulsating direct current (DC). This technology is widely used in DC power supplies and in demodulating amplitude-modulated (AM) radio signals.

Film Availability and Production Details

This film is available in the public domain under Creative Commons, and it can be accessed through the Library of Congress Prelinger Archives. The film has been edited and converted to HD quality for better viewing. Introductory and closing music is provided by Nero 10, with commercial use rights granted.

This film not only serves as an educational tool but also highlights the enduring legacy of vacuum tube technology in the realm of electronics, illustrating its significant contributions to both past and present technological advancements.

Please subscribe to my YouTube Channel: https://YouTube.com/NW7US

Also, please click on the bell, to enable alerts so that when I post a new video, you will be notified. By subscribing and making sure that the bell (alert) notification is set to ALL, you will be kept in the loop for new videos and more.


Visit, subscribe: NW7US Radio Communications and Propagation YouTube Channel

ICQ Podcast Episode 436 – Cyber Security in a Ham Radio World

In this episode, we join Martin Butler M1MRB, Caryn Eve Murray KD2GUT, Edmund Spicer M0MNG, and Ed Durrant DD5LP to discuss the latest Amateur / Ham Radio news. Colin Butler (M6BOY) rounds up the news in brief and the episode's feature is Cybersecurity in a Ham Radio World.

We would like to thank Dino Papas KL0S, Nigel Wells (2w0cgm) and our monthly and annual subscription donors for keeping the podcast advert free. To donate, please visit - http://www.icqpodcast.com/donate

  • Broadcast networks to spread Australian broadcast FM and TV coverage
  • ARRL Teachers Institute on Wireless Technology Adds Third Level
  • Spacex Gives Details Of Spacecraft To De-Orbit ISS
  • College Ham Club ‘found’ During Renovation
  • WRTC Spots To Be Sold To Highest Bidder
  • Celebrating the Dawn of Mass Global Communication
  • Spectrum Conference 2024
  • Churches and Chapels on the Air 2024

Colin Butler, M6BOY, is the host of the ICQ Podcast, a weekly radio show about Amateur Radio. Contact him at [email protected].

With the good comes some not so good.

 It's nice we are in the upswing regarding our solar cycle but along with that comes an active sun both in a good way and not so good way.  This weekend is the running of the WAE CW contest and well the solar flux index is off the scale at 306 the sun had a few hiccups over the past few days in the way of solar flares directed toward Earth. The flares tossed out some juice (ionizing radiation) toward us and more specifically right into our ionosphere layer D! We now have a D layer that has become a suction cup for HF radio signals. How does all this translate into a CW contest you ask.....well I'm calling "CQ contest"  and no one comes back to you. When someone does come back to me due to this peculating of the ionosphere at one point they are S8 and then gone! But I can say the solar gods are fair about things in that conditions are like this all over. No sense getting upset about it as this is all part of the solar puzzle that at times we enjoy and other times we spend time doing none ham things. While at the same time checking back in now and then to see how conditions are. 

 


Mike Weir, VE9KK, is a regular contributor to AmateurRadio.com and writes from New Brunswick, Canada. Contact him at [email protected].

Amateur Radio Weekly – Issue 343

Amateur Radio Weekly

Why M17 is significant
No other Amateur Radio digital voice system is as well defined as M17.
Zero Retries

QSL cards from the past
A complete collection of old QSL cards now totaling more than 56,000.
W8JYZ

Ham Radio becomes voice of victims and rescue teams alike
The operators are accompanying each rescue team, providing real-time updates on the situation on the ground.
India.com

San Francisco Ham Radio operators provide critical communication link
Ham Radio operators across Northern California provided a critical communication link to embattled first responders.
KPIX

HFGCS: The backup plan for doomsday
The United States Strategic Forces Command built their backup plan around the unique properties of HF radio.
Hackaday

The QubeDX: A modular CubeSat style QRP Transceiver
Building a QRP radio for digi mode operation that can be operated remotely via Wi-Fi.
DK1MI

Loop the loop on 6 meters
Meteor scatter is probably one of the coolest things that Techs can do.
KB6NU

Store and Forward
A podcast about the past and future of Ham Radio.
Store and Forward

An introduction to the 1.25 meter band
222 MHz has many of the qualities of 2 meters, with the added benefit of less consumer electronics interference and generally a lower noise floor.
N4DTF

Video

Analog television transmission with a HackRF SDR
Using a program called hacktv-gui to transmit analog TV signals.
Signals Everywhere

The beginners guide to the Radioberry HF SDR Transceiver Pi Hat
The first initial steps needed to install the Radioberry service on a Raspberry Pi 4.
Tech Minds

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Amateur Radio Weekly is curated by Cale Mooth K4HCK. Sign up free to receive ham radio's most relevant news, projects, technology and events by e-mail each week at http://www.hamweekly.com.

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