The Radio Prepper channel is a technology and science channel with a focus on preparedness and use of radio technology for disaster relief and small group communications in times of need. Amateur Radio (ham radio) is a popular hobby and service that brings people, electronics and communication together. Just go a little extra far Its so worth it. Freedom means freedom from persecution based on any human trait or belief such as, non exhaustively, race, gender, religion, sexual orientation or nationality. Online and in-person tests are given regularly. Beginners Quick Guide | The Basics of DMR Digital Mobile Radio (Update As a result, SSB audio will sound a bit thinner and less rich, but it is still quite intelligible and more than sufficient for weak signal phone communications. 0:00 / 5:07 Amateur Radio Bands and Frequencies Explained - DX Engineering DXEngineering 10.6K subscribers Subscribe 21K views 3 years ago Rod, K8RR and Mark, W8BBQ discuss the different. Since VHF and UHF frequencies are desirable for many uses in urban areas, in North America some parts of the former television broadcasting band have been reassigned to cellular phone and various land mobile communications systems. For example, the approximate geometric mean of band7 is 10MHz, or 107Hz. The higher the frequency is, the "shorter" the wavelength is. It has the advantage of having small antennas and is able . [6] As frequency increases above 30GHz (the beginning of the millimeter wave band), atmospheric gases absorb increasing amounts of power, so the power in a beam of radio waves decreases exponentially with distance from the transmitting antenna. The 2 meter HAM radio band is part of a very high-frequency radio spectrum consisting of frequencies ranging from 144 MHz to 148 MHz in the International Telecommunication Union (ITU) Territory. Find helpful advice for your first ham stationand how to get on the air and be sure to join ARRL to take advantage of the numerous membership benefits, including technical support from our Technical Information Service. Even within the allocation still dedicated to television, TV-band devices use channels without local broadcasters. dates for each individual contest. hello, I hope to see you soon . A look at the Amateur Radio (HAM) Bands: LF Bands: Low Frequency We also look at antennas for s. PDF The HF Bands - QSL.net Click to enlarge. if you ever would like to take a look there it may help you with the questions on the test. The trade-off with SSB as compared to conventional double-sideband AM and especially to FM phone mode is the quality of the audio. The term "ham" as a pejorative nickname for amateur radio operators was first heard in 1909 by operators in commercial and professional radio communities. Good amateur practice also requires that you be considerate on the air, taking care to ensure adequate unused band near your selected carrier frequency before you transmit in order to minimize interference with others.