Calculating SWR

Discussion in 'Homework Help' started by retired flyer, Aug 5, 2014.

  1. retired flyer

    Thread Starter New Member

    Aug 3, 2014
    5
    0
    The question reads: A 150 ohm line is terminated by an antenna of unknown impedance. Power delivered to the antenna is 600 watts. What is the SWR on the line? How do I solve this? Dividing 150 into 600 just seems to easy although 4:1 is one of the answer choices. Thanks for the help.
    Regards,
    Walter
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,135
    1,786
    I think you need the amount of reflected power to solve this one, since the impedance of the antenna is unknown. It is possible that if the antenna impedance was 150 Ohms there would be no reflected power and the SWR would be 1:1
     
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  3. crutschow

    Expert

    Mar 14, 2008
    12,977
    3,220
    Yes, you did not post enough info to determine the SWR.
     
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