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FREQ. Help

  1. Sep 5, 2012 #1
    I have a Shortwave Radio that tunes in on Kilo Herts.

    So my display says
    1015 kHz

    Now if I want to write this out I would write
    101,500,000 Hz

    Now if I am on a Radio that tunes in on MHz and the display says
    101.5 MHz

    Now if I want to write this out I would write
    101,500,000 Hz

    Now this is what I do not understand they are both the same FREQ but I do not get how you tune them in on MHz and kHz?

    I know MHz meens it will tune in at 1,000,000 Hz and if you tune in at Kilo Hz it will be 1,000 Hz

    I hope I am asking in the right way if not please tell me?
     
  2. jcsd
  3. Sep 7, 2012 #2

    NascentOxygen

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    Staff: Mentor

    I'd write 1015 kHz as 1,015,000 Hz
     
  4. Sep 7, 2012 #3

    Mech_Engineer

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    Science Advisor
    Gold Member

    You're losing track of decimal places, the 'k' in kHz moves the decimal point 3 digits to the right of a number to go to just Hz. Therefore 1015. kHz = 1015000. Hz = 1,015,000 Hz.

    Likewise, converting to MHz from kHz is as simple as moving the decimal point 3 digits to the left, so 1015. kHz = 1.015 MHz.
     
  5. Sep 7, 2012 #4
    Ok so if I see a readout of
    1015. kHz
    I would say
    1015,000. Hz

    And if I see a readout of
    1.015 MHz
    I would say
    1,015,000,000 Hz

    Do I have it?
     
  6. Sep 7, 2012 #5

    Mech_Engineer

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    Gold Member

    Not exactly... MHz is 10^6, so 1.015 MHz is 1,015,000 Hz. You might be just better off quoting all the frequencies as MHz or kHz though.
     
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