1-9 Thus, for a sine wave with a frequency of 1,000,000 hertz (1 megahertz), the wavelength would be 300 meters, as shown below: The higher the frequency, the shorter the wavelength of a sine wave. This important relationship between frequency and wavelength is illustrated in table 1-1. Table 1-1.—Radio frequency versus wavelength FREQUENCY WAVELENGTH METRIC U.S. 300,000 MHz .001 m .04 in EHF- 30,000 MHz .01 m .39 in SHF- 3,000 MHz .1 m 3.94 in UHF-- 300 MHz 1 m 39.37 in VHF--- 30 MHz 10 m 10.93 yd HF---- 3 MHz 100 m 109.4 yd MF---- 300 kHz 1 km .62 mi LF---- 30 kHz 10 km 6.2 mi VLF----- 3 kHz 100 km 62 mi Q-9. What is the instantaneous amplitude of a sine wave? Q-10. What term describes how much of a cycle has been completed? Q-11. What determines the frequency of a sine wave? Q-12. What is the period of a cycle?

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