The ARRL's Tech Q&A: Your Quick and Easy Path to a Technician Ham License |
Common terms and phrases
10-meter band 2-meter amateur license Amateur Radio amateur station amplifier antenna switch antenna tuner ARRL audio call sign capacitor circuit coaxial cable communications connected controlled RF radiation D region dipole antenna driven element dummy antenna emission explanation for question FCC Rules feed line feet field strength filter half-wavelength dipole antenna HF bands impedance inductor input interference ionosphere maximum permissible exposure microphone milliwatts per square minimum safe distance Morse code MPE limits mW/cm² Ohm's Law ohms operating frequency packet radio peak envelope power permissible exposure MPE power density power supply propagation receiver region repeater resistance resistor RF energy RF exposure RF radiation environment RF radiation exposure RTTY satellite Section signal subelement SWR meter Symbol Table NT0-1 Technician transceiver transmission transmitter is operating uncontrolled environment Uncontrolled limit vertical antenna voltage volts watts PEP output wavelength wire Yagi antenna