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Amateur Radio Technician Class Element 2 Course Presentation

Amateur Radio Technician Class Element 2 Course Presentation. ELEMENT 2 SUBELEMENTS T1 - FCC Rules, station license responsibilities T2 - Control operator duties T3 - Operating practices T4 - Radio and electronic fundamentals T5 - Station setup and operation

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Amateur Radio Technician Class Element 2 Course Presentation

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  1. Amateur Radio Technician ClassElement 2Course Presentation • ELEMENT 2 SUBELEMENTS • T1 - FCC Rules, station license responsibilities • T2 - Control operator duties • T3 - Operating practices • T4 - Radio and electronic fundamentals • T5 - Station setup and operation • T6 - Communications modes and methods • T7 - Special operations • T8 - Emergency and Public Service Communications • T9 - Radio waves, propagation, and antennas • T0 - Electrical and RF Safety

  2. SUBELEMENT T6 - Communications modes and methods[3 exam questions – 3 groups] T6A – [1 exam question] • Modulation modes, descriptions and bandwidth (AM, FM, SSB) • Phone transmissions are voice transmissions by radio. • Single sideband (SSB) is a form of amplitude modulation. • A gateway is a name given to an amateur radio station that is used to connect other amateur stations to the Internet. • Single sideband (SSB) voice modulation is most often used for long distance and weak signal contacts on the VHF and UHF bands. • Frequency Modulation (FM) is most commonly used for VHF and UHF voice repeaters. • The emission type, CW, has the narrowest bandwidth. • Upper sideband is normally used for VHF and UHF SSB communications. • The primary advantage of single sideband over FM for voice transmissions is that SSB signals use much less bandwidth than FM signals. • The approximate bandwidth of a single-sideband voice signal is between 2 and 3 kHz. • The approximate bandwidth of a frequency-modulated voice signal is between 5 and 15 kHz. • The normal bandwidth required for a conventional fast-scan TV transmission using combined video and audio on the 70-centimeter band is about 6 MHz.

  3. SUBELEMENT T6 - Communications modes and methods[3 exam questions – 3 groups] T6B – [1 exam question] • Voice communications, EchoLink and IRLP • Information is transmitted between stations via the Internet using Echolink. • Internet Radio Linking Project (IRLP) • Any licensed amateur radio operator may operate on the Echolink system. • Echolink and IRLP have in common Voice over Internet protocol technology. • Voice over Internet protocol is the method used to transfer data by IRLP. • IRLP is a method of linking between two or more amateur stations using the Internet. • EchoLink allows computer-to-radio linking for voice transmission. • If you hear a brief tone and then a station from Russia calling CQ on a 2-meter repeater you are listening to an Internet linked DX station. • You might find a list of active nodes using VoIP in a repeater directory or the Internet. • When using a portable transceiver you select a specific IRLP node by using the keypad to transmit the IRLP node numbers.

  4. SUBELEMENT T6 - Communications modes and methods[3 exam questions – 3 groups] T6C – [1 exam question] • Non-voice communications - image communications, data, CW, packet, PSK31, Morse code techniques, Q signals • Packet Radio is an example of a digital communications method. • Automatic Position Reporting System (APRS) • A global positioning system receiver is required along with your normal radio for sending automatic location reports. • A standard fast scan color television signal transmission is indicated by the term NTSC. • Point-to-point digital message forwarding emission mode may be used by a Technician class operator in the 219 - 220 MHz frequency range. • Phase Shift Keying (PSK) • PSK31 is a low-rate data transmission mode that works well in noisy conditions. • Any sending speed at which you can reliably receive is recommended when using Morse code. • A practical reason for being able to copy CW when using repeaters is to recognize a repeater ID sent in Morse code. • QRM is the "Q" signal used to indicate that you are receiving interference from other stations. • QSY is the "Q" signal used to indicate that you are changing frequency.

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