Blog Archives

Intro to Kit Building for Radio Amateurs by K7QO (Chuck Adams)

Chuck Adams (K7QO) makes a club presentation on Kit Building basics.  He highlights what every ham radio operator needs on his workbench to build kits or make repairs.

K7QO Chuck Adams website

Make your own Dipole Antenna

Randy does such a good job of explaining how to make your own 10 Meter Dipole.  Get on the air… 10 meters is a fun band when the sun cooperates!

Magnetic Loop Antenna

I always wondered if this type of magnetic loop antenna would “get out” to the world and how it worked.  This video shows both!

What is a Ham Radio Repeater?

Excellent introduction and explanation of “What is a Ham Radio Repeater?”

DR-1X System Fusion Repeater and the HRI-200 WiresX

A nice video showing the basics of the setup with the HRI-200 and the Yaesu DR-1X System Fusion repeater.

How can you become a Ham Radio operator QUICKLY?

Ham It Up_HR-RGB

You won’t believe how easy it can be!  You take it in bite-size chunks of information and at your own pace.  NO MORE MORSE CODE REQUIREMENT!  (But Morse Code is a blast to still use and also the most efficient form of radio communication!  I had to be able to send and receive 5 words per minute for the old Novice License… 13 wpm for General Class… and 20 wpm for Advanced and Extra Class licenses.  There are no longer any Morse Code requirements and the Novice and Advanced Class licenses are no longer available.)  For more than 100 years ham radio operators have been exploring the world and beyond from their own little ham shacks / ham station / living rooms.  It never gets old and there is always something to explore!

What can you do with a ham radio?  Talk to people all over the world with as little as 1 watt or less… or even 1500 watts.  Assist in Emergency Communications.  Assist with branches of the US Armed Forces.  Build your own radios and equipment.  Experiment with your own antennas.  Go to fun “Hamfests and Flea Markets” to learn and get great bargains.  Find new friends who are hams in your local club.  Participate in the Annual ARRL Field Day Contest and exercises!  Talk to the astronauts on the International Space Station.  Talk to other hams around the world THROUGH many ham radio satellites orbiting the earth!  Use your local VHF/UHF Repeaters to talk to family and friends from the car, handheld radio or from home.  Track ham radio equipped balloon flights.  Work with hams with disabilities.  Refurbish or collect old time ham radio equipment.  Teach others ham radio courses and/or help with exam sessions.

ARRL-Centennial-Logo-small-1024x868           skywarn           amradiospace2013           amateur_radio_emergency_service_thumb  
                                                               

There are three different licenses you can obtain and they are designed in a way that as you study to get the first license, what you learn there will help you understand the next license study material.  The really nice thing about it is that you will have ALL the multiple choice questions in each exam pool AND THE EXACT ANSWER TO EVERY QUESTION!  That’s pretty good to have all the Q’s and A’s to study!  The sample questions in your study materials are the EXACT questions you will see on the exam.  A score of 74% gets you the license!  There are also FREE practice exams you can take online or even from your smartphone!  (I took a couple practice exams each evening as I sat watching TV in my favorite chair in my living room.)  Soon the questions you have missed in the past practice exams are embedded in your brain with the correct answers reinforced!  Each question will have four (4) possible answers; and on most of the questions you can just about eliminate two of the possible answers just by looking at them.  (I will give you some good pointers about how to study and prepare for the exams at the end of this post!  Read them before you buy any study guides or books!)

ham-radio-test

You will just need to do some interesting and fun reading, look at the questions (and the exact answers) from each chapter of the book… and before you know it you will be ready to take the exam!  You are going to learn some really cool stuff each time you read the material.  PLUS, as you advance to a higher class of Ham Radio license you can pick your own call sign!  (In the early 1980’s my first call sign was KA8LJO from the FCC as a Novice Class licensee… then I was assigned KB8FIR by the FCC when I got my Technician Class license… and better yet, when I got my Extra Class license I picked my own call sign, WT8WV… “Whiskey Tango 8 Whiskey Victor”.  I chose it for three reasons… I am fond of an occasional taste of good whiskey… I love my state of West Virginia… and phonetically it stands out and sings in a pile-up during a Ham Radio contest!)

GWTW14Stech

The first license you study for is called the Technician License and the exam has only 35 questions!  You will learn some very basic things about electricity, how your radio signals move through the air, some of the rules that the Federal Communication Commission (FCC) expects us to abide by for best practices, antennas, radios, the frequencies you can use in your new radio, and much more!  You will gain legal access to some very good frequencies for both voice and data communication in several excellent ham bands.  You could be ready to take this exam in a couple weeks of study!

gwgw11gen

The second license is called the General Class License and also has only 35 questions.  This course adds to what you learned in the Technician Class study.  It really dives just a bit deeper into some common things you will find will help you get more out of your antenna, radios, contesting, which ham bands magically open at specific periods of the day and year, some simply explanations of a few electronic circuits we use every day, and much more!  You will also gain even MORE frequencies on the ham bands to use at your pleasure!  You could be ready to take this exam in 2-4 weeks of easy study!

gwem-12extra

The third (and highest class of Ham Radio license) is called the Extra Class License and consists of a 50 question exam.  This study course really dives deeper in what you have learned in the Technician and General Class license preparations.  It will take a bit more time to study and prepare, and has a few more questions on the exam.  You gain ALL frequencies allotted to Ham Radio communications, with several excellent niches within certain ham bands reserved for ONLY Extra Class licensees!  You could be ready to take this exam in 30-60 days with some good study and practice exams under your belt!

ARRL-Logo

The Amateur Radio Relay League (ARRL) also offers all sorts of study books for not only all the licenses but a myriad of way cool ham related stuff for every facet of this vast hobby!  I have been a member of the ARRL for years and the monthly QST magazine alone is worth my dues!  Plus you get discounts on all the other books and items.  You can even find a local ham radio license class!  http://www.arrl.org/find-an-amateur-radio-license-class  Here is a link to the ARRL study guides for the three licenses.  They are much more in-depth than the Gordon West series of license books and a good addition to your study… but I personally feel the Gordon West series in the best way to get that license quickly.  Below for more information.   http://www.arrl.org/ham-radio-license-manual

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License Exam Study and Preparation Tips

Select which study book you will use for the license you are going to test for.

Find a quiet place to read.

Have a yellow highlighter handy to highlight things you might need to refer to for a question.

Study about 20 minutes a day.  That way you won’t overload your brain!

Download a smartphone app with the ham radio practice exam questions and answers.  I used this all the time whenever I had to wait around for something or someone… or in a boring meeting (once in a while).

https://play.google.com/store/apps/details?id=com.iversoft.ham.test.prep&hl=en

Watch free YouTube videos to help you prepare or further understand the chapter.  I have watched all of Dave Casler’s YouTube videos and they were a tremendous help to UNDERSTAND not just the question but the concept for every ham license book.  He does each video by chapter or topic and they a short enough to consume in a sitting.

https://www.youtube.com/watch?v=fEWmiMotimY&list=PL07A7D1C9D7BF7F48

I highly recommend the Gordon West Technician Class License Value Pack for getting your Technician License quickly!  I don’t get paid for saying this!  Grin.  However, I will tell your this is the best investment in getting a license you can find.  Gordo makes it fun to learn and he tackles every question and answer in a way that will etch it deep in your memory.  You will absolutely burn through the questions and he’ll teach you ways to remember even the questions that seem difficult for some reason.  I have met him at the Dayton Hamvention and he’s a wonderful person and so helpful.  He even gives you his personal telephone number to call if you have a question!  I suggest burning the CD’s to an MP3 format and put them on your iPod, iPhone, Android or other device so your can listen to them anywhere… car, at lunch, on the treadmill, working out, hiking, etc.  Worked for me every time I did my 30 minutes on the treadmill and lifting weights!  (After I completed my Extra Class license with his book and CD’s I sold them for half-price to another General License ham in our club who is now studying with them!  You could recoup some of your cost, too!)

http://www.w5yi.org/catalog_details.php?pid=78&sort=4

I highly recommend the Gordon West General Class License Value Pack for getting your General Class License quickly!  http://www.w5yi.org/catalog_details.php?pid=59&sort=4

I highly recommend the Gordon West Extra Class License Value Pack for getting your Extra Class License quickly!  http://www.w5yi.org/catalog_details.php?pid=43&sort=4

Practice Exams, Practice Exams, Practice Exams, Practice Exams, Practice Exams!

These are free and a good way to see what areas you need to focus on so you can master a question.  I did this about every evening during commercials watching TV!  Great feedback on how you are progressing in your studies.  When you begin scoring 80% on these practice exams you will be ready to sit for an exam!  (If you buy the ARRL study books, they come with a CD with all the questions in the pool, the answers, scores your exams, shows you the areas you need to focus on, and tracks your progress by each section of the question pool.)  

http://www.eham.net/exams/

Getting you Ham Radio License is NOT rocket science… but it will be fun!  It’s a hobby that is ageless.  What happens if the cellphone towers don’t work, or if there is a prolonged power outage, or a natural disaster prevents normal communications?  Ham radio operators are often the first folks getting the word out and getting the help coming in!  I doesn’t have to be an expensive hobby, either!  I have pieces of equipment I have either built myself or purchased dirt cheap at a flea market.  I have also saved my money for some other items in my ham shack.  It’s also a fun hobby to share with family, friends, and associates worldwide!  GET ON THE AIR!       

Click on picture below to enlarge it so you can see the frequency privileges you get with each license!

band_planou

How Does a Multimeter Work?

Afrotechmods is a very insightful and easy to understand YouTube channel to follow on basic electronics.  Here he talks about multimeters and their usage in our ham shack.  I have several different digital and analog multimeters and their usage often depends upon the application and project.  He does other excellent videos, so check him out!

WM2U’s PSK31 Webpage

This is BAD PSK31 signal identification... keep it clean!

This is BAD PSK31 signal identification… keep it clean!

Good article on PSK31 by WM2U that has all sorts of good information.  Also his Tip List is below.

http://www.qsl.net/wm2u/psk31.html

 WM2U’s Tip List for PSK31

  • Set sound card sampling rate to 11025Hz
  • This must be at least a 16 bit sound card.
  • No Signal observed? Check your WAVE slider is not zero.

  • Set Rx and Tx frequencies to 1000Hz.
    NOTE: This value will get you up and running but if you plan on using a filter change it to the center frequency.
  • If using LSB check the “Inverted QPSK” box.
  • Too much noise! Try using a narrow CW filter.
  • Using a Word Processor, write your buffered messages and save them as .txt files, placing em! in a folder called ‘buffers’ created in the main PSK31 folder.
    NOTE: This is NOT a form of type ahead buffer. It is simply a method to pre write ‘Standard’ messages hence saving you keyboarding time.
  • READ THE HELP FILES.
    • Your sound card output must NOT overdrive your Mic Input.
    • Do not overdrive the sound card input from the Radio.
    • Get used to the Waterfall/Phase indicators for tuning.
    • Do not use your Speech Processor.
    • Be patient. This is a new mode. You will not find all the features you are used to yet!

How to zero-beat WWV to check or adjust a Frequency Counter’s accuracy by W2AEW

This is another cool video by W2AEW.  He does the best job of explaining theory I have found.  His videos are excellent and his schematics and formula explanations are easy to understand.  I have exchanged messages with him and he encourages us to follow his blog and learn.  Also check out his website below!

This video shows how to zero-beat the WWV signal as a tool to adjust the frequency reference of an old frequency counter. It demonstrates the concept of zero-beat’ing a test signal against the WWV carrier. Since the WWV carrier is likely more accurate than any other frequency reference that most hobbiests and hams have in their labs, this is a useful technique. It can be used to check or adjust the 10MHz reference in the counter, if it has one, or can be used to very precisely set the output frequency of a signal generator which can then be used as a test signal for the frequency counter.

Similar techniques can be used to adjust the frequency accuracy of a ham radio’s reference. Several years ago, I wrote up a procedure that I put on my website. If can be found here:
http://www.qsl.net/w2aew/adjustrig.htm

 

Basics of RF Mixers in Radio Receivers / Mixer Tutorial / Frequency Conversion by W2AEW

This video describes the basic properties of RF mixers, in the context of using them for frequency conversion/translation such in the application of a radio receiver. The input and output signals are shown on the oscilloscope, and the spectrum of the output is also shown, illustrating the various frequency components that are produced by the mixing process. The concept of IF filtering in a receiver is also illustrated. The video does not go into the design of mixers, the different types of mixers, or how to select a mixer for a given application.

What is a dB, dBm, dBu, dBc, etc. on a Spectrum Analyzer? by W2AEW

This tutorial video gives the basics of the typical amplitude units used on a spectrum analyzer. It gives a basic description of the electronic definition of the decibel (dB), some of the properties of the dB, why it is used. It describes that the dB is a relative measurement. These relative measurements can be expressed as absolute measurements when a known reference is used/implied. This is where the terms dBm, dBu, dBmv, etc. come from. Finally, the term dBc is described. Each of the descriptions is followed with practical examples and demonstrations on an oscilloscope and spectrum analyzer.

Measure Capacitors and Inductors with an Oscilloscope and some basic parts by W2AEW

This video shows how to measure the value of unknown capacitors and inductors using your oscilloscope and a simple pulse generator. There are many ways to do this, but this video focuses on just two basic techniques. The video was inspired by this blog post on scopejunction.com:
http://www.scopejunction.com/author.a…
The techniques are very simple, and are a good example of basic principles of RC and LC circuits. Another bonus is that it shows another use for the fast-edge pulse generator that was shown in a video I posted several days earlier on making your own basic TDR:
http://www.youtube.com/watch?v=9cP6w2…
The capacitors are measured by simply measuring the RC time constant, and the inductors are measured by making a simple LC tank circuit and measuring the resonant frequency.

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