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Thread: Wavelength Help Needed

  1. #1
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    Wavelength Help Needed

    How do I calculate the wavelength of an 1800 MHz signal
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  2. #2
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    Velocity, wavelength, and frequency of a wave relate by the following rule:

    $\displaystyle v = \lambda f$, where $\displaystyle \lambda$ is the wavelength.

    If the wave is a signal, as in radio or television or whatever signal, it is a eletromagnetic wave. Does this ring a bell for you as to the velocity of the wave?
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  3. #3
    A riddle wrapped in an enigma
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    Quote Originally Posted by drew1000 View Post
    How do I calculate the wavelength of an 1800 MHz signal
    $\displaystyle \lambda=\frac{c}{v}$ where c=speed of light in a vacuum ($\displaystyle 3 \times 10^8 \ \ m/s \ \ or \ \ 3 \times 10^{10} \ \ cm/s)$ and v = frequency in hertz (hz).

    $\displaystyle 1800 \ \ Mhz \ \ =1.8 \times 10^9 \ \ hz$
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    What is the answer if it is a mobile phone signal
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  5. #5
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    Quote Originally Posted by drew1000 View Post
    What is the answer if it is a mobile phone signal
    A mobile phone signal is a eletromagnetic wave, and as 'masters' correctly pointed out, and all eletromagnetic waves have the speed of light, $\displaystyle c$, in the vacuum. This speed is very similar to that in the air, so you just ignore the difference.
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