TopPodcast.com
Menu
  • Home
  • Top Charts
  • Top Networks
  • Top Apps
  • Top Independents
  • Top Podfluencers
  • Top Picks
    • Top Business Podcasts
    • Top True Crime Podcasts
    • Top Finance Podcasts
    • Top Comedy Podcasts
    • Top Music Podcasts
    • Top Womens Podcasts
    • Top Kids Podcasts
    • Top Sports Podcasts
    • Top News Podcasts
    • Top Tech Podcasts
    • Top Crypto Podcasts
    • Top Entrepreneurial Podcasts
    • Top Fantasy Sports Podcasts
    • Top Political Podcasts
    • Top Science Podcasts
    • Top Self Help Podcasts
    • Top Sports Betting Podcasts
    • Top Stocks Podcasts
  • Podcast News
  • About Us
  • Podcast Advertising
  • Contact
Not in our directory?
Add Show Here
Podcast Equipment
Center

toppodcastlogoOur TOPPODCAST Picks

  • Comedy
  • Crypto
  • Sports
  • News
  • Politics
  • True Crime
  • Business
  • Finance

Follow Us

toppodcastlogoStay Connected

    View Top 200 Chart
    Back to Rankings Page
    Hobbies

    Foundations of Amateur Radio

    Starting in the wonderful hobby of Amateur or HAM Radio can be daunting and challenging but can be very rewarding. Every week I look at a different aspect of the hobby, how you might fit in and get the very best from the 1000 hobbies that Amateur Radio represents. Note that this podcast started in 2011 as “What use is an F-call?“.

    Advertise

    Copyright: ℗ & © 2015 - 2020 Onno Benschop

    • Apple Podcasts
    • Google Play
    • Spotify

    Latest Episodes:
    The evolution of our hobby is now ... May 21, 2017
    Show notes

    Foundations of Amateur Radio

    The hobby that we call Amateur Radio has been around for over a century. During that time we've seen it evolve from capacitors, inductors, through valves, then diodes and transistors, through to integrated circuits, chips and surface mount components. Along the way we collected a vast body of knowledge and experience which combine to make the hobby what it is today.

    You might have noticed that the progression of our hobby didn't stop with surface mount components, it's still evolving through software and the next frontiers are already tentatively being explored and offered for sale to curious amateurs.

    In my day job I'm a software engineer and I adopted Amateur Radio as my hobby of choice because it was technically diverse, had a rich history, a large community and had little to do with my day to day pursuits in computing and information technology. How wrong was I?

    This morning I started writing code to visualise audio, specifically in my case to make a video version of this weekly segment, but also to experiment with how we as humans use our senses to decipher information. As I was buried inside the decoding of audio it occurred to me that what I was doing was the equivalent of soldering together a circuit for the purposes of learning more about some aspect of my hobby.

    This in turn made me realise that as we dive deeper and deeper into the software defined radio universe, more and more of what we as individuals can do will be based on computers, algorithms and maths.

    On the face of it, this is an enormous shift in perspective, but I'd hazard that it's no different from moving between a spark-gap transmitter and an AM transmitter, or moving from AM to SSB, or the introduction of transistors. Each of those changes now look pretty small with hind-sight, but at the time that they occurred their impact must have been immense.

    I made contact with the software defined radio community a few weeks ago and in between my work I'm slowly beginning to explore this new universe that is beginning to unfold.

    Of course, as this evolution happens, while we're in the middle of the transition, as-in right now, there'll be discussion about the difference between digital and analogue, between hardware and software, about the benefits and pitfalls, no-doubt mirroring prior discussions that have been had across the past generations of amateurs.

    A new dawn has come and the future is here, come and join the fun.

    I'm Onno VK6FLAB


    Things you can learn from a new operating environment ... May 14, 2017
    Show notes

    Foundations of Amateur Radio

    The other day I had the fortune of using a club station with an Advanced License whilst mobile using more than my usual 5 Watts. I was driving in convoy away from the main local 2m repeater and was interested in finding out what the coverage might look like and how high power might make a difference. When I say high power, that's 50 Watts FM on 2m.

    I learnt several things during my journey.

    First of all, line of sight is still true, even with more power, but there is more margin for error. Little obstacles that would cause a 5 Watt signal to be absorbed before it got to the other end are all but invisible with full power. Don't get me wrong, a hill is a hill and a radio signal won't go through it, but trees, houses, and all the other little things we humans build on the planet each obstruct a little bit of signal. Higher power gives you more margin and less effect on the resulting audio.

    The next thing I learned is that two cars, travelling in convoy can overwhelm each other with power. The way you experience this, is that the other car starts talking, and all you hear is mush. As they drive away from you, at say a traffic light, their signal becomes clearer, to the point where it's back to normal. The way it sounds is almost as if the signal to noise ratio is being adjusted, more signal, less noise as the distance increases - a very strange sound to hear.

    As it was explained to me, the phenomenon relates to the receiver being overwhelmed by the very strong signal nearby. I'm guessing that the AGC, Automatic Gain Control is reducing the sensitivity of the receiver, to compensate for the strong transmission nearby, which in turn means that it is unable to hear the repeater which is relaying the same signal on the receive frequency. As the distance from the strong transmission increases, the AGC compensates, increasing the gain, thus making the receiver able to hear the repeater.

    There wasn't the opportunity to experiment too much, being in a moving vehicle, but I wonder if changing the AGC setting would have made a difference. I suspect that there is more going on than just the AGC, since the signal from the nearby transmitter, the one in the other car, is still exciting the receiver, even if the gain is being adjusted. I suspect, but don't know for sure, that theoretically, I would have been able to hear both signals, the outgoing one from the other car, even though it's 5 MHz off frequency and the incoming signal from the repeater. Likely there was a minuscule delay between the two, perhaps even to the point of suppressing each-other.

    Another question that comes to mind is a phenomenon called the "FM Capture Effect" as well as the so-called "near-far problem" and I'm wondering if this is another aspect of what I was hearing and if we had a local AM repeater, would it exhibit the same behaviour?

    Now, as you might have guessed, there is very little in the way of research in my comments here, but that wasn't the point of what I'm talking about. The point was that a slightly new operating environment introduced me to concepts I'd never considered, never even really knew about, other than in a theoretical sense and I was able to actually see, well, hear, this in real life.

    Given my track record with over 300 different episodes, you can take for granted that I'll be digging deeper into the experience to see what I can learn and to see if my initial observations bear any relationship to reality, or if I'm adding two and two together and coming up with five.

    I'm Onno VK6FLAB


    What to say on-air? May 07, 2017
    Show notes

    Foundations of Amateur Radio

    There's a confession I'd like to share with you. Chatting on air is something I rarely do.

    When I'm working distant stations, so-called DX, my typical exchange is: AB0XYZ, you're 5 and 9. If the station has some questions to ask, I'll answer, but often times there is no conversation and I'll move on to the next one.

    Some of that can be explained by my initial training as an Amateur. I started working lots of stations in a contesting environment. I took to it as a duck to water and never looked back. No doubt I have lots to learn and I cannot guarantee that my callsign recollection is as good as I think it is, not to mention being able to detect an incorrect callsign, since I still have little knowledge in which callsign prefix, the first part, belongs to which country.

    Another explanation is that I'm often QRP and just very happy to be able to make the contact in the first place.

    I hear stations on-air having a great chat, a so-called rag-chew, but I never seem to find something interesting to say or relevant story to share with a stranger. Sure I can talk. As you might have gathered from listening to me here, I'm never short of something to say, or an opinion to venture, but being sociable is not one of my stronger traits, never has been.

    A few of our local Amateurs have a tendency to tell stories that go on for so-long that they time-out the local repeater, to the point where one repeater has been set to a 15 minute time-out just to cater for verbose exchanges. I immensely enjoy the stories, but often find myself wondering what I might contribute without sounding like I have tickets on myself.

    I recently was asked by a new Amateur what to talk about. Their daily commute is a 30 minute car ride to and from work and chatting on the repeater seems like a logical thing to do, but they asked me what to talk about. Stuffed if I know.

    Seriously though. The very first part of chatting is to actually turn on your radio. The next part is telling others that you're there. Then when they do, ask what they've been up to and before long there is a conversation under way.

    The funny thing about all this is that while I'm pretty quiet when it comes to being on the local repeater, I do host a weekly 'net for new and returning Amateurs and when asked I'm more than capable of standing my ground and venturing my opinion.

    Perhaps I just need to practice more and perhaps if you find yourself at a loose end on a topic of conversation, feel free to make fun of me or to raise a topic that's something I've talked about. Who knows, we might both learn something.

    I'm Onno VK6FLAB


    Amateur Radio Community Standards Apr 30, 2017
    Show notes

    Foundations of Amateur Radio

    The Amateurs Code, originally written in 1928 has been quoted for almost a century. A Radio Amateur is Considerate, Loyal, Progressive, Friendly, Balanced and Patriotic. There is something almost romantic about that, but in my short life as an Amateur I've been exposed to much that leaves that as just a sentiment, rather than a social code. I'm not alone in that. I have numerous emails from Amateurs around the planet who share their negative experiences, often being bullied by self-proclaimed experts with an axe to grind.

    Our 1928 Amateur Code brings with it a sense of decorum, etiquette, but other than some true Gentlemen I've had the pleasure to meet, there are aspects about our community that just don't translate into today, even if the Amateur Code could lead the way.

    Our community of Radio Amateurs represents an opportunity to engage with society, to attract new blood, to include new ideas and to lead the way in community engagement. As one path towards growth of our hobby we have started talking about STEM, Science, Technology, Engineering and Maths as one way to relate to a wider community. That's a great sentiment, but I think we need to do some housekeeping before we embark on that journey.

    Amateur Radio is steeped in tradition. We use quaint terms such as OM, Old Man to describe each-other, YL, Young Lady to describe women in general and XYL for wives of Amateurs. We have a thing called a "Gentleman's Agreement" and we generally refer to Amateurs as He and Him.

    By doing that we've essentially limited our audience to 50% of the global population. We alienate women before we even start to engage them and when we do have female participation we get Facebook posts full of sexual innuendo, or outright sexist comments, not to mention the girlie pictures spread around the globe, sniggeringly exchanged as contact QSL cards. On air we alienate women, make disparaging or sexual comments or express our amazement that a mere female could achieve a license.

    What are we, pubescent boys? Is that the best we can do? The irony is that we as a community rarely discuss politics or religion. It's just not the done thing.

    In general day-to-day exchanges we use inclusive language. In our workplace we are sensitive to people who are different and in our laws and rules we champion equal rights for all humans, be they men, women, gay, straight, yellow, black, purple or intersex.

    Why is our Amateur language not inclusive in a hobby that is based around communication, where Amateurs clamour to work a pile-up on a rare DX station in some war-torn part of the globe, where science and rational thought are expected and where an Amateur Code written in 1928 encourages us to be Considerate, Loyal, Progressive, Friendly, Balanced and Patriotic?

    I think we need to take a long hard look at ourselves before we start going into schools and sharing what our amazing hobby is about.

    I'm Onno VK6FLAB


    Beauty is in the eye of the Beholder Apr 23, 2017
    Show notes

    Foundations of Amateur Radio

    There is something magical about getting a new radio. I remember it well. Fondly even. I had done the research, consulted my bank account and picked my radio. It arrived in a courier delivery and I sat at the kitchen table, opening the box and marvelling at the parts that made up my first purchase as a radio amateur.

    I'd joined my local radio club a month earlier and proud as punch I took my shiny new box of joy to the club and showed it off to anyone who came near. I vividly remember one member's first comment: "Wow, that's an ugly radio!"

    I was heart broken, insulted, confused and didn't quite know what to do with that experience. My radio was beautiful, tiny, special. It was just what I wanted, it wasn't ugly and besides, it was mine. As irony would have it, several months later I saw their radio and thought that it wasn't something that I would like to bring home.

    Fast forward six years.

    The other week, I went to a local Ham-fest, it's a place, often a local hall with tables around the edges stacked full of an amazing array of stuff, where amateurs come together to meet and exchange their obsolete junk, uh, surplus equipment. It's not uncommon to arrive at a Ham-fest with one box and to leave with two.

    Among the tables and amateurs I was introduced to a new radio. I looked at it and in my head I thought: "Wow, that's an ugly radio!" - fortunately I managed to keep the thought to myself and instead asked the amateur who was showing it off about how it worked, how they liked it and what it cost. The amateur was excited to share their thoughts and I learned something from the exchange.

    When I got home I searched the 'net for some more information and found that this particular radio was more than it appeared and that my initial dislike of the visual translated into an interest that might yet see me as the owner of that radio.

    I know you're busting to ask which radio and which amateur, but I'm not here to advertise any particular radio, just to observe that beauty is in the eye of the beholder and that things can change once you know more.

    I wish I had those words to share with the first person who told me that I had an ugly radio, but I'm pleased that I have them now.

    So, beware, ugliness is an emotion, not always accurate and if you experience it, bite your tongue and learn something first.

    I'm Onno VK6FLAB


    An Amateur Radio Code of Conduct Apr 16, 2017
    Show notes

    Foundations of Amateur Radio

    The Hobby of Amateur Radio is a curious mix of technology, rules and people. If you're new to this you're likely to find yourself being swept up in the scale of the experience and more than I think is appropriate you'll find yourself at the pointy end of a barb by another member of the community.

    It's taken me over six years to begin to understand what is going on that is causing this. Let me start by saying that there is no place for bullies in this society. Correcting a mistake is one thing, but causing interference, transmitting insults, abusing people on air, ignoring new-comers or using social media to vent is just not appropriate.

    Bullying aside, after looking at posts on social media for a while, it occurred to me that much of what lies at the root of this behaviour is a fundamental mismatch between how licensing is achieved today, compared to how it was achieved historically. I see regular references to the type of examination. For example, historically examinations were conducted using full written exams, where today we are likely to use multiple-choice methods and even those are being reviewed.

    It occurs to me that historically, the process of becoming a licensed radio amateur was a slow and steady process, infused with deep contact with an existing amateur, regular training, exposure to the community, on-the-job training, interspersed with study and then finally an examination.

    Today, the process is more likely to be a much quicker affair, with initial exposure to the hobby, a visit to the local training facility, either face-to-face, or on-line, followed by an examination.

    If we assume for a moment that both examinations are the same in terms of assessment, and I know that in and of itself is controversial, what else is different between these two processes?

    The answer is the deep contact while learning. In the United States this is referred to as Elmering, in Australia it's called Mentoring and it isn't the same as it used to be. Today there is mentoring going on, lots of it, but often that's after someone has actually received their credentials as a licensed operator.

    We assume that the examination prepares us for the hobby, but actually, the examination just prepares you for the law. That is, holding a certificate of proficiency means essentially that you are now legally aware that you can create interference and that you are liable if you do so.

    As I said, the deep contact during the learning process is different. That deep contact exposes a new amateur to the unwritten rules and customs that form part of the community of radio amateurs across the globe. For example, we use Lower Side Band or LSB below 10 MHz and Upper Side Band or USB above 10 MHz. There is no technical reason, just historical ones, that make that this must be so.

    There are many, many such un-written rules about amateur radio. Often they are referred to as the "Gentleman's Agreement" - and I'll leave aside for a moment the gender issues related to that notion. This so-called "Gentleman's Agreement", is not written down, it's passed on from amateur to amateur, or assumed to have been magically acquired by the process of osmosis.

    So, a newly minted Amateur, truth be told, I'm one of those, steps into the stream and gets swamped by rules that appear from no-where and instead of getting chapter and verse on how to learn, the amateur gets insulted and ostracised.

    It is clear to me today - more than it has ever been - that old hams die hard. They are responsible for their legacy and if they want to maintain the hobby in their image, they're required to be inclusive and assist new amateurs, rather than insult them and drive them away.

    I know that there are many wonderful amateurs in our community who do just that. However, the noisy ones just want the new amateurs to get off their lawn and go and play with something else, preferably not in their patch.

    I have no doubt that I'll get flurries of people who feel insulted by what I have observed and to those I can only say: "If the shoe fits..."

    For the rest of us, it's time to get on air and make some noise. Document any rules you come across and perhaps one day we'll have a code of conduct that radio amateurs can hold up to the world as an example of tolerance, inclusiveness and encouragement. If we're lucky we can even incorporate the Amateurs Code, originally written in 1928. A Radio Amateur is Considerate, Loyal, Progressive, Friendly, Balanced and Patriotic.

    We can dream.

    I'm Onno VK6FLAB


    What is SOTA? Apr 09, 2017
    Show notes

    Foundations of Amateur Radio

    One question I get asked regularly is: "What's the point of Amateur Radio?" Today I'm going to begin to answer this perennial question. As you know, this activity is a hobby, something you do for your personal enjoyment. People get pleasure from a vast range of undertakings and if you combine multiple such adventures into your life all the better.

    Amateur Radio is a hobby in and of itself, but it's also an enabling hobby. What I mean by that is it often can act as an excuse to do something else - under the guise of being Amateur Radio. For example, you can use an activity called SOTA to add some fun into your life.

    I've spoken in the past about SOTA, Summits On The Air. It's a way to enjoy being outdoors and climbing across the globe, as well as an excuse to participate from the comfort of your shack to encourage climbers and even as an unlicensed radio enthusiast, you can also participate.

    SOTA started in 2002 with the publication of the General Rules which outline all that the community expects and needs from you if you participate. In the intervening years the document has grown to 23 pages and I confess I was not looking forward to reading it all and truth be told, I've not yet digested the finer points, but I will before I next climb up a mountain.

    Don't get me wrong, it's not an onerous document, it's laid out well, describes precisely what's involved, how it's structured, who to ask questions of, what code of conduct is expected and what constitutes a valid SOTA activity.

    As I said, before I next climb up a mountain - more precisely, in SOTA terms - it's a prominence, something sticking out of the earth. Before you start gathering maps and looking at tall rocks, a prominence isn't just about how tall it is, but also how close other peaks, there's a whole definition of this idea, but the SOTA volunteers have done all the work, so you don't need to get technical to get on-air.

    There's rules about getting to a peak, about being there, about the environment, about how to use callsigns and the use of cars and other things, so before you get yourself into strife, like I did, read the rules.

    There's three kinds of participants, an Activator, someone who climbs up the mountain, gets wet, gets snowed in, gets hot and sticky, eaten by mosquitoes, breaks stuff and does all the hard work. The second type of participant is the person in the shack behind their radio, on the listen-out for new activations, making contacts, logging them and gathering points. The final group of participants is the Short Wave Listener or SWL, who logs contacts, showing both sides of the communication, both stations heard, etc. An awards system exists for all three participants.

    SOTA is a global activity. On the face of things it might seem daunting and my highlights of the notion that there are rules should not deter you from actually participating. The rules are to ensure that people don't get into trouble and die, to make sure that everyone has a good time and to deal with disputes as and when they arise.

    Many resources about Summits On The Air can be found online, but your starting point should be http://sota.org.uk where you'll find a welcoming and active community of enthusiasts who also like being on-air and making noise from weird and wonderful locations on top of big rocks.

    The point of Amateur Radio is to find something that you enjoy doing and making it a shared experience by incorporating your radio. A bit like Mark Twain said: "Golf is a good walk spoiled", SOTA is a mountain climb enhanced.

    I'm Onno VK6FLAB


    Adding a stroke to your callsign ... Apr 02, 2017
    Show notes

    Foundations of Amateur Radio

    To sign or not to sign, that is the question. Last week I spoke about operating with low power, or QRP which sparked a lively discussion which evolved into a conversation about adding bits to your callsign to indicate some extra information.

    For example, some stations will add stroke QRP to their callsign when they're operating low power when others don't. Other examples are adding stroke Portable or stroke Mobile.

    Let me start by saying that I'm not familiar with the rules in countries outside Australia, but I'd be surprised if they're much different, since callsigns follow a global standard, but check your local laws before you start getting on-air to make noise.

    In Australia the rules, the Radiocommunications Licence Conditions (Amateur Licence) Determination 2015, commonly referred to as the LCD has nothing to say about any such addition to a call sign. There is no mention of low power operation, mobile operation, marine operation or any such thing. The reference to portable operation discusses how long you're allowed to operate a portable station without notifying the regulator.

    So, from a legal perspective, there is no such thing as a stroke anything.

    So where does this addition of stroke QRP, or stroke Mobile or any other variation come from?

    The regulator maintains a website that has a page called "Amateur operating procedures" which "can help prospective amateur operators". It details types of transmissions, discusses code words like QRP and has one set of comments about adding something to a transmission when operating mobile or portable.

    It suggests that you can say something like: This is VK6FLAB operating portable on Wave Rock, and if you're operating outside your state, suggests that you might shorten that to VK6FLAB/5 when operating in South Australia or VK5.

    So, there is no such thing as stroke Portable, stroke Mobile, stroke QRP and the only suggestion from the regulator is that you indicate that you're mobile or portable and help by indicating your state if you're not operating within your home state.

    In the past few years I have signed with VK6FLAB/QRP but after realising that this causes much confusion in logging, I have stopped doing it. These days you might hear me say that I'm operating QRP during a CQ call, to help other stations a little, but I've often found that it's really not worth the extra breath.

    I'm Onno VK6FLAB


    Life's too short for QRP... Mar 26, 2017
    Show notes

    Foundations of Amateur Radio

    A phrase I hear regularly is "life's too short for QRP" and today I think that it's appropriate to start a conversation about that sentiment. When propagation is poor the high-power amplifiers get on air and use it to prove that you need power to get out and about.

    Far be it for me to deny another amateur the pleasure of working a thousand stations at the same time, a so-called pile-up. It's a thrill. I've done it during contests. It's fun. You call CQ and the biggest problem you're faced with is deciding on which station to pick.

    In the past I've mentioned that I've made a contact with Cuba, about 18,000 km away using 5 Watts. Over the weekend I managed just under a third of the distance, Perth to Tuvalu, 7,000 km with a wire and 5 Watts. You could take away from this that I like bragging about my contacts and it's true that I'm proud of having achieved those things, but that's not actually what I want to talk about.

    Amateur Radio is a lot like fishing. You can go out and throw a stick of dynamite into a pond and pull out all the fish, or you can stand up to your armpits with a reel in your hand casting a fly to catch a fish. Operating QRP is like fly-fishing. It takes practice, patience and perseverance. Of course it's not for everybody, but then neither is fly-fishing.

    If you hold an introductory Amateur Radio license like I do, the rules of engagement restrict how much power you're allowed to use. For some this restriction appears to inhibit their ability to enjoy the hobby. This podcast started life some six years ago precisely because a new entrant was expressing their need for more power.

    My contact over the weekend wasn't particularly earth shattering. It was made with a minimum of equipment, a wire antenna on a squid-pole strapped to a house, simple radio, running off a battery in preparation for a contest that was happening the next day. The thing to note is that it happened on 40m, using 5 Watts and the distance was twice the maximum distance within my own country.

    This means that any amateur who is starting out can achieve the same thing. It means that you might need to review your assumptions if you think of a 4,000km distance between stations as a hurdle that cannot be overcome.

    The take-away should be that while QRP is not for everyone, it's a perfectly valid way of enjoying the hobby and smelling the roses along the way.

    In case you're wondering, yes, I was wearing a grin from ear to ear after making my contact. Better still, I didn't have to kiss any fish.

    I'm Onno VK6FLAB


    What is a resistor? Mar 19, 2017
    Show notes

    Foundations of Amateur Radio

    Last week I was casually asked "What is a resistor?" Now if you're into electronics like many radio amateurs, you'll instantly have a picture of a little blob with two wires with pretty colours painted on the outside, the size of a grain of rice and if you're not into electronics, you now know what a resistor looks like.

    Before I talk more about resistors, I'm going to talk about a stick.

    If you pick up a stick and poke something with it, some interesting stuff is actually happening. You move your hand at one end and the other end moves at the same time. Obvious right? It's a stick. On a molecular level something else is happening. The atoms under your hand inside the stick move back and forth with your hand as you move it. The atoms next to those atoms do the same thing. The atoms next to that, all the way to the end, also do the same.

    Now you likely have a picture in your mind of a solid stick. On a molecular level, this isn't solid at all. Instead of a solid stick, imagine having a row of ice-cubes with a little space in between each one being bumped by the previous ice-cube. The ice-cube closest to you moves with your hand, the one next to that gets bumped, all the way to the end.

    With ice-cubes there is a noticeable delay if the gaps are visible, but the delay gets smaller and smaller if the cubes are closer and closer together.

    In an electrical wire a similar thing is happening. You might have a picture in your mind of electrons travelling from one end of a battery, through a wire to the other end of a battery. Except that's not what is happening. While electrons do move, very slowly, it's called the drift velocity, think centimetres, or inches per hour, turning on a light is instant.

    It's instant because each atom affects the one next to it, which does the same to the one next to that and so-on. While not exact, this happens roughly at the speed of light. This is beginning to look a lot like a stick. Push at one end, something happens at the other end, almost immediately.

    Instead of ice-cubes, but in much the same way, we're actually moving an electrical charge from one end of a wire to the other.

    It takes energy to keep a charge moving along a wire. The amount of energy used is the resistance of that wire. Not all materials act in the same way. Some, like silver or copper, use little energy or have low resistance, while others like carbon, use more energy and have high resistance.

    You'll find resistors made in many different ways of various different materials. Each one is made for the specific purpose of using a defined amount of energy to pass along a charge.

    There are resistors made of carbon and of thin film of conductive material sometimes with laser cut paths to make them appear as a long maze of conductive material and of very thin wire, tightly wound together. This kind of wire resistor has a side-effect in that a tightly wound coil like that has some properties that we use in Amateur Radio, we often think of these kinds of devices as inductors.

    But that's another story for another day. As a side note, I started using coulombs, joules, volts, amperes and ohms to explain this, but I figured that it wasn't needed to understand how it actually works. If you have some time, look into it, the maths is fascinating and pretty straight forward.

    I'm Onno VK6FLAB


    Previous 1 49 50 51 52 53 61 Next

    Related Podcasts

    Ham Nation

    1

    Ham Nation Games & Hobbies
    The Brülosophy Podcast

    2

    The Brülosophy Podcast Games & Hobbies
    Good Job, Brain!

    3

    Good Job, Brain! Games & Hobbies
    Making It With Jimmy Diresta, Bob Clagett and David Picciuto

    4

    Making It With Jimmy Diresta, Bob Clagett and David Picciuto Arts
    Waypoint Radio

    5

    Waypoint Radio Arts
    BeerSmith Home and Beer Brewing Podcast

    6

    BeerSmith Home and Beer Brewing Podcast Games & Hobbies
    footer-logo

    Contact Us

    Toll Free: 844-670-7747

    Links

    • Home
    • Top Charts
    • Networks
    • Apps
    • Independents Podcasts
    • Podcast Advertising
    • Podcast News
    • Contact Us
    • About Us
    • Analytics & Insights

    Stay Connected

      Privacy, Terms of Use & Our Code of Ethics Protecting Content Creators Copyrights