Execute (XQ)

Purpose:   To cause program execution at points in the data stream where
           execution is not automatic.  Options on the card also allow for
           automatic generation of radiation patterns in either of two vertical
           cuts.

Card:

           Cols  Parameter
          ------------------
           1- 2     XQ
           3- 5     I1
           6-80     Blank

Parameters:
   Integers
      (I1)  Options controlled by (I1) are:
            0 - no patterns requested (normal case).
            1 - generates a pattern cut in the XZ plane, i.e., phi = 0 degrees
                and theta varies from 0 degrees to 90 degrees in 1 degree steps.
            2 - generates a pattern cut in the YZ plane, i.e., phi = 90 degrees
                theta varies from 0 degrees to 90 degrees in 1 degree steps.
            3 - generates both of the cuts described for the values
                1 and 2.
      The remainder of the card is blank.

Notes:
• For the case of a single frequency step, four cards will automatically produce program execution (i.e., the program stops reading data and proceeds with the calculations requested to that point); the four cards are the execute card (XQ), the near-field cards (NE,NH), and the radiation-pattern card (RP). Thus, the only time the XQ card is mandatory, for the case of one frequency, is when only currents and impedances for the structure are desired. On the other hand, for the case of automatic frequency stepping, only the XQ card and the RP card cause execution. Thus, if only near-fields or currents are desired, the XQ card is mandatory to cause execution. Furthermore, the XQ card can always be used as a divider in the data after a card which produces an execute. For instance, if the user wished to put a blank XQ card after an RP card to more easily divide the data into execution groups, the XQ card will act as a do-nothing card.
• The radiation-pattern generation option of the XQ card must not be used when a radial wire ground screen or a second medium has been specified. For these cases, the RP card is used where the presence of the additional ground parameters is indicated.

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