A light introduction into the world of Amateur Radio and how to obtain a Ham Radio License A brief history of radio An overview of Ham Radio It’s like CB radio, but… What you can and can’t do with Ham Radio All about getting your license and other details A little bit about bands and frequencies Suggested Equipment and a little demo. Repeaters and nets Radio expands back to the late 1800’s. In 1901 it became possible to communicate across the Atlantic. 1912 United States Congress passed the radio act of 1912 to set regulations on radio and provide licenses. Over the past 100 years, radio has continued to expand and develop in different areas. Ham Radio is a non-commercial radio service which provides both local and worldwide, over the air, communications between two or more stations. It’s available to anyone in the United States regardless of their age. If you can pass a written test, you can have a license to use the bands. Communications can be made worldwide. Ham Radio is like CB radio, but you can operate with way more frequencies, power, and range. CB radio provides forty channels that are open to anyone to use. The channels are really frequencies, but to make things simpler, they preset the frequencies by channel numbers. Later on in the equipment section, I’ll talk about presetting frequencies in a radio. There are some restrictions on what you can and cannot use amateur radio for. For example, you can use ham radio for the following: ◦ Personal communications between friends, family, and other licensed operators. You can speak locally and worldwide ◦ Emergency communications. You can request for help or assist others in need when you can’t communicate by normal means such as cell phones being down. Organizations like ARES, SKYWARN, and SATERN have trained volunteers to help in disaster relief. Contesting Radio Direction Finding. Also known as Fox Hunting or T Hunting. Join a local radio club which provides social activities and repeater usage Certain digital modes offer communications over the air and through the internet ◦ Images, VOIP (Think Skype), email, and instant messaging use radios, computers, or a combination of both to provide additional communication options voice Test and use your own “homebrewed” radio equipment ◦ Antennas, radio kits, and other equipment You can’t use ham radio for the following: ◦ Promoting a business or selling items that are nonham radio related ◦ Using it for business communications ◦ Playing music over the air ◦ Intentionally causing harmful inference to other radio services Certain military and government agencies share some of the same bands as amateur radio operators. Government agencies have primary use. Jamming signals and interfering with emergency traffic. In previous years the FCC managed and held amateur radio exam sessions. However, all exam sessions are now held by Volunteer Examiners (VEC’s) who have been certified by their organization to handle all testing sessions, testing materials, and license classing training. The American Radio Relay League arrl.org is one of the main organizations that manages and provides testing for those who want to obtain their Amateur Radio License. Preparing for the exam can be done by either purchasing a study guide from directly from the ARRL, a book store, one of the amateur radio stores, or possibly borrowing a book from your local library. Be sure that the book is up to date with the current exams questions. Exam guides are normally revised about every three years. The guide you’ll want to use is The ARRL Ham Radio License Manual, Third Edition which is for the current Technician exams through June 30, 2018. The book costs about $25-$30. Currently there are three Amateur Radio license classes available: Technician, General, and Extra. ◦ Some older operators hold licenses under the older class system. So you might hear the term Novice or Advanced. When obtain your license, you are given a call sign which uniquely identify who are or your station. ◦ You can get a vanity call sign if you desire. All licenses are valid for ten years, renewing is free and you don’t have to take the exam again unless your license has been expired for more than two years. Renewing is done through the FCC’s website at: ◦ Universal Licensing System This is the license you begin with which grants all access to the higher end of the frequency spectrum. ◦ Starting at 50 MHz up into the Gigahertz range. You also get some frequency range on 28MHz – 29Mhz with limited modes. Most of your communications will be made locally through repeaters to give greater range. This license opens up all the lower frequency bands and allows you to use all modes and higher power on the bands that techs are limited to. The test covers more technical aspects of radio, electronics, and some important rules. You can also become a VE, Volunteer Examiner by taking an open book test. ◦ General’s can only help administer Technician Class tests however. This is the highest license class available for ham radio. You gain a little extra frequency ranges for that are great for contesting. The focus for this license is mainly on the technical aspects of radio. You can become a VE and help administer any license class exam. All licensing exams are multiple choice questions taken from a pool of questions. The Technician and General Class exams are 35 questions. The Extra Class license exam is 50 questions. You need to get at least 26 questions correct in order to pass the Tech or General. The Extra class requires at least 37 questions correct in order to pass. The cost of taking the exam is $15 (give or take a dollar) regardless of whether you pass or fail. Exam sessions require at least three volunteer examiners. Once you complete your test, your test is graded right away and you’ll know if you passed or not. Upon successful passing of the test you’ll earn your technician license. As a bonus, for no extra charge, you will have the option to take the General exam. ◦ If you successfully pass the General exam, your license will be upgraded to the General Class ◦ You will now have the option to take the Extra Exam for no additional charge as well. ◦ If you pass the Extra exam, then congratulations, you’ve reached the highest license class. All the exam questions and answers are taken from a standard pool. Practice testing can be done unlimited times for free and the best part is, the questions and answers are exactly the same, word for word, on the practice test and on the real exam! There are at least two online places to go to for taking the practice test: qrz.com and Arrl.org's Exam Review. General rule of thumb, give yourself at least a month to prepare yourself for the Technician exam. ◦ Spend about a week practice testing to go through the whole pool of questions. Pick an upcoming test date that’s one to two months in advance so you have a deadline in mind. Try to plan on taking the test no more than two months from the time you start reading to the test day. Giving yourself more time can actually cause you to lose momentum and interest in taking the test. License upgrades will require more study time. What is a radio wave? ◦ A radio wave is an electromagnetic signal that oscillates back and forth. What is frequency? ◦ Frequency is the amount of times that the signal moves back and forth per second or commonly known as the number of cycles per second. ◦ You’ll hear the terms Hertz - Hz, Kilohertz – KHz, Megahertz – MHz, etc. What is wavelength? ◦ A radio wave’s wave length is the distance between each cycle. In other words, as a radio wave’s frequency increases, the wave’s distance gets shorter. If you lower the frequency, the distance between each cycle increases. A band is the beginning and ending of a range of frequencies that is named after the approximant wavelength for that range. We refer to bands in meters based on the size of the wave length. ◦ For example, the 2 meter band has a frequency range from 144 MHz to 148 MHz ◦ The 70 CM band runs from 420 MHz to 450 MHz Its common to hear people refer to bands by either the frequency or meters. Voice Mode ◦ Referred to as Phone Mode. Voice is allowed on almost all ham bands and is the obvious most popular mode. ◦ Phone is used on FM, AM, SSB, and some digital modes. Continuous Wave also known as CW or Morse code. ◦ Tools of the trade that are used to produce the “dits” and “dahs” are straight keys, paddles, bugs, and some radios have built in auto keyers or you can purchase one separately. FM – Frequency Modulation. ◦ Just like your car radio, most likely this is the mode you’ll start out with. AM – Amplitude Modulation. ◦ Also just like your car radio, this mode mostly used on lower frequencies. Not as commonly used as Single Sideband. SSB - Single sideband. ◦ This mode is most commonly used in the lower frequencies. SSB is goes by USB Upper Sideband and LSB Lower Sideband. Digital – There are many different types of digital modes available. Some digital modes handle voice and data, while others strictly handle only data. ◦ D-Star A digital voice mode that requires a d-star ready radio, a dstar repeater, and club membership or registration to access it. Icom makes d-star radios. ◦ DMR Digital Mobile Radio A fairly new mode on the market. ◦ System Fusion Another digital mode made by Yaesu. Like D-Star, it requires Fusion radios and Repeaters to use. Hand Talkies (Also called HTs) are a relatively cheap option to start out with in Ham Radio. Pick a Dual Band Radio that transmits on the 2 meter band 144MHz – 148 MHz and the 440/70cm band 440MHz – 450MHz. If you want to operate in the car, get a magmount antenna with a pigtail to connect the two together. Yaseu, Kenwood, Alinco, and icom make great radios. AES Amateur Radio Equipment ◦ There is a few locations. The closest one is in Milwaukee Wisconsin. ◦ Good service, but not always the best prices. ◦ Aesham.com GigaParts ◦ Located in Huntsville, Alabama ◦ Usually the best prices, ships fast. ◦ GigaParts.com They are the most portable option. You can hook up external antennas to provide more range and mobile options Transmit power is limited to around 5 watts. Require recharging, but extra battery packs can be purchased. Typically output about 50 watts max. Mounting a mobile radio in your car or truck requires a direct connection to the battery. A separate antenna and possibly coax cable too must be purchased separately. Be careful about your radio overheating on summer days if running higher power. Mobile radios can also be used as a base station, but they require an AC to DC power supply. An antenna and coax line is required, along with some kind of mast. ◦ The higher the mast the better the signal generally. ◦ Sometimes finding a good location can be tricky. Radios that are strictly base station types are usually High Frequency Band radios which require a General or Extra class licenses to use. Antennas can be either multi band or mono band. For Hand Talkies, the antenna choice is easy! For Mobile Radios For Base Stations ◦ Upgrade antennas are available however. ◦ Antenna choices can either be a mag-mount or one directly attached to the car. This requires drilling a hole through the trunk or other place. ◦ You can purchase a vertical antenna (Omi-directional), a Yagi (Directional antenna), a j-Pole which is basically a vertical antenna, or a Dipole which is usually a horizontal wire. ◦ A mast of some kind is need that can either be mounted on the roof, the side of structure, or in the ground. Cushcraft AR-270 Arrow 2M/440 J-Pole Typically RG-58, RG-8X, or better coax is used to connect the radio and the antenna together. Better quality cable usually means less loss, but... ◦ Power loss in cable is calculated by a few things: The quality of the cable. For example: LMR 240 is better than RG-58 and LMR 400 is even better. The frequency being used. The higher the frequency, the more loss that occurs. The distance. The long the cable, the more loss occurs as well. Repeaters allow low power radios and VHF/UHF FM radios to transmit much further (About a 50 mile radius) then if they were They are generally purchased and maintained by radio clubs due to their high cost. Most repeaters can be used without being a member of a club. Each repeater has a set band and frequency. You can find repeaters through a printed directory or online such as repeaterbook.com Connecting to a repeater requires knowing the following: The repeater’s output frequency, the PL tone, and the offset frequency. Note: most radios handle the offset frequency, so you normally don’t have to worry about that. ◦ The output frequency is what everyone hears. ◦ The PL tone keeps interference out by requiring the correct tone setting. Think of it like a access code. ◦ The input frequency is what everyone uses to talk on. This is called duplexing. ◦ When two radios talk directly to each other that’s called simplex. Many repeaters have nets during the week and even on the weekend. ◦ A net is when a group of radio operators get together and talk about either a specific topic or have a informal round table. ◦ Nets will always have a specific time and day that they run on. ◦ When a net starts, one person is the net controller and makes the announcement that any operators may check into the net with their call sign and they might mention if they have any traffic or not. ◦ If a net is going, it is customary not to interrupt the net unless it is an emergency. I would like to thank the Chicago Ridge Libaray for letting me host this presentation. Also I would like to thank you for coming out tonight. Any questions please ask or email me at jcgallaher78@gmail.com