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Yes, Amateur Radio is still a Thing
2022-09-03 15:11 |
Moderator Registered: 7 years ago Posts: 70 |
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Yes, amateur radio is still a thing: Here's why
(Source: Ham Radio World) Amateur or “ham” radio is a method of two-way communication. At first glance, it resembles Citizen’s Band (CB) radio or perhaps walkie-talkies, but there is much more to it. Amateur radio has more capabilities beyond what is possible with a walkie talkie or CB radio. Besides local communication, as is possible with a CB radio, amateur radio can be used to bounce signals off layers of the ionosphere, a layer of the Earth’s atmosphere with free electrons and ions due to incoming solar radiation. Because this layer is high above the Earth’s surface, these reflective layers can be used to bounce signals long distances, making amateur radio a world-wide communication method. Communication modes Unlike CB, amateur radio also allows for multiple communication modes: generally grouped into voice modes, continuous wave (CW) or digital modes. Voice modes are probably the most obvious; each operator speaks into a microphone. However, inside of voice modes are Amplitude Modulation (AM), Frequency Modulation (FM) and Single Side Band (SSB), all of which take the operator’s voice, mix in a high frequency and send the signal to an operator elsewhere. The operator’s radio then removes the high frequency, and the audio will come through their speaker. CW is a method of sending Morse Code. Morse Code is simply the agreed upon sets of “dits” and “dahs'' used to make letters and words, and CW is an on/off switch to an oscillator that sends tones when switched on. In other words, CW is the original digital mode, “on” sends a tone and “off” sends nothing. CW is still very popular, as it tends to be more audible through noise. Digital modes are also very popular and grow by leaps and bounds each year. In these, the amateur radio operator inputs words on a computer, which then packages the characters into a signal to be sent through the radio. There are many different digital modes, with “FT8” being the most popular. Others include phase shift keying 31 Hz, radio teletype and many others. With amateur radio, new modes can be created by amateur radio operators, provided they meet FCC guidelines. Applications In the earlier days of amateur radio, it was a way to communicate with the rest of the world. Before the internet and smartphones, talking with people at the opposite side of the country or even in different countries was difficult. Amateur radio solved this problem by allowing for long distance communication for reasons like current events, geographical exploration and cultural study. Homebrewing In amateur radio parlance, homebrewing refers to DIY setups and equipment, as amateur radio’s early days were filled with experimenters. Because radio was a new science, amateur radio operators were constantly pushing the technological envelope with new antenna designs, filters and other hardware, as well as communication protocols. Even during its mature age, software packages for modulating communication modes, logging contacts, programming radios and the like were developed by tinkerers and experimenters. Many ham radio operators still use homebrew equipment. Homebrewing is one of the fastest growing fields in amateur radio. In the early days, radio experts built antennas and hardware. Many of today’s homebrewers still do so, but there is a rise in microcontrollers and programming as well. Microcontrollers like Arduino, or small computers – Raspberry Pi being the most notable – have been used to make programmable keyers for Morse Code, automatic position reporting system trackers for tracking a mobile station’s location, modulators for various communication modes, power monitoring devices and a host of other projects. Emergency communication Smartphones and wireless internet connections are nice but require a substantial amount of infrastructure to be reliable. The reliability decreases, though, during disasters or emergency situations, such as the power outages over Texas in the winter of 2021, or Hurricane Katrina back in 2005. Even a localized set of severe storms can hamper communication networks for days, leaving first responders without adequate communication. Amateur radio operators have often stepped up to help during emergency situations. Organizations such as Amateur Radio Emergency Services train members to work with emergency organizations, lending their radio expertise to pair with rescuers, set up communication centers and assist accordingly. Most local, county and state emergency organizations have established working relationships with the amateur radio community. Contesting and radio sport Outside of the practical and educational uses of amateur radio, radio hobbies are also popular. There exists many radio contests, where operators attempt as many contacts in a short amount of time as possible or in as far a distance as possible. Some contests, such as the American Radio Relay League Field Day, emphasize aspects of emergency communications, where extra points are awarded for the use of solar panels over commercial power, yet also rely on making as many contacts as possible in a given timeframe. Besides contests, there are reliability awards like the “Worked All States,” “Worked All Counties” and awards for working different numbers of “DX” or foreign stations. DX100 is awarded for working 100 countries. The future of amateur radio Once dismissed as an “old man’s hobby,” amateur radio has grown in popularity since the COVID-19 pandemic. Many who were familiar with the hobby found time to explore and even meet new people without leaving home. The digital modes have breathed new life into amateur radio, where hams are constantly developing new communication protocols and building homebrew equipment and software to communicate with. Learning about electronics through hands-on activities appeals to folks from all ages. Amateur radio is an ever-evolving hobby that will remain relevant for quite some time to come. SOURCE: https://electronics360.globalspec.com/.../yes-amateur... Submitted by: VE3OHS Wayne D. Anderson - VE3OHS Mobile: 613-453-7791 Email: ve3ohs@gmail.com Kingston, ON HamSphere North American Rag Chew Net Net Manager For HamSphere4.0 Private Message: http://hs40.hamsphere.com/pm.php Reply Quote Report |
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