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.

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.

[embedyt] https://www.youtube.com/watch?v=ZJ6rN7WEjbc[/embedyt]

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.

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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

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 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. 

After several weeks of downtime due to a ransomware attack that crippled the Logbook of the World (LOTW) service and much of ARRL’s IT infrastructure, LOTW is finally operational again. Jeff Davis, KE9V, penned a compelling article in response to ARRL CEO David Minster NA2AA’s Second Century article entitled Dewy Defeats Truman! Davis’s critique eloquently highlights the shortcomings in ARRL’s response to this event. In previous articles, I’ve also addressed the inadequate communications and suggested improvements, while noting that members discovered the nature of the attack through a Maine public document.

NA2AA’s recent column suggests that ARRL leadership has failed to learn crucial lessons about communication, transparency, and stakeholder management during a crisis. Rather than approaching the situation with humility and acknowledging areas for improvement, the column draws a flawed comparison to the historical “Dewey Defeats Truman” headline—a result of rushed journalism. In contrast, any misinformation circulating during the LOTW outage was largely due to ARRL’s infrequent and uninformative updates, which lacked warmth and personality.

While the column rightly highlights LOTW’s undeniable success, it also raises concerns about the high volume of non-ARRL member usage. The suggestion of potentially charging for LOTW use is intriguing, especially given ARRL’s challenges with membership numbers and revenue, and its ongoing tendency to alienate and outrage members. Implementing LOTW as an a la carte service for non-members could be a viable revenue strategy for the organization. However, it’s crucial to recognize that paying customers may have different expectations than organization members. In the event of future outages or communication issues, ARRL should be prepared for less patience and forgiveness from a customer base compared to its membership if leadership sees no reason to change its course with communication and transparency.

ARRL Life Member, K3NG

This article was originally posted on Radio Artisan.