3/28/2021 0 Comments Quarter Wave Antenna Calculator
The distance between the peaks of two consecutive cycles is measured in meters, hence usage by hams. The relationship between a radio signals frequency and its wavelength can be found by the industry accepted formula wavelength equals 300 divided by the frequency in megahertz.
![]() Citizens Band Radio Service. You may also wish to see other allocated US and International frequencies.) Click the button for a measure of a full wave, three quarter wave, five eights wave, half wave or quarter wave length. The length is returned in U.S. You may change the entered frequency value or click on Clear Values to try again. Quarter Wave Antenna Calculator Full Wave ToBe sure to click on Full Wave to see the actual frequency band designation and frequency wavelength verified as the wavelength itself is displayed. The Frequency Designation and Frequency Wavelength will vary according to the wave selection. The obvious need for that information is that the Frequency Wavelength is where you may expect to see harmonic or rf interference from the broadcast Frequency Designation. For example, we could say that a station is operating on 27185 kilohertz (kHz), 27.185 megahertz (MHz), or on 11 meters, which is where the CB frequencies are. Quarter Wave Antenna Calculator Series Of CyclesAll three ways of expressing the frequency are correct Radio waves are transmitted as a series of cycles, also known as hertz, one after the other. You may have noticed that the electric power supplied to your home is rated at 60 Hz. Electric power is distributed by the power company as alternating current ( AC ), meaning it goes through a sine wave cycle of changing directions of flow. When we say that electric power is 60 Hz, we mean it changes the direction of flow (cycles or hertz) 60 times in one second. Radio waves go through far more cycles in a second than electric current, and we need to use bigger designation units to measure them. We have chosen to use the metric system for such designations. One is the kilohertz (kHz), which is equal to 1000 cycles per second. Another common one is the megahertz (MHz), which is equal to 1,000,000 cycles per second, which is the equivalent of also 1000 kHz. The obvious relationship between these units is typical of metric designation changes, being a factor of 1000. The generic term wavelength is left over from the very early days of radio. Frequencies were measured in terms of the distance between the peaks of two consecutive cycles of a radio wave instead of the number of cycles per second. Hams still designate ranges of frequencies in the same manner. ![]() The distance between the peaks of two consecutive cycles is measured in meters, hence usage by hams. The relationship between a radio signals frequency and its wavelength can be found by the industry accepted formula wavelength equals 300 divided by the frequency in megahertz.
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