Additional Ground Parameters (GD)

Purpose: To specify the ground parameters of a second medium which is not in the immediate vicinity of the antenna. This card may only be used if a GN cart has also been used. It does not affect the field of surface patches Card:
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    /2|  5|   10|   15|   20|    30|    40|    50|    60|    70|    80|
   /  |   |     |     |     |      |      |      |      |      |      |
  |   |   |     |     |     |      |      |      |      |      |      |
  |GD |I1 | I2  | I3  | I4  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |
  |   |   |     |     |     |      |      |      |      |      |      |
  |   | B | B   | B   |  B  |  E   |  S   | CLT  | CHT  |  B   |  B   |
  |   | L | L   | L   |  L  |  P   |  I   |      |      |  L   |  L   |
  |   | A | A   | A   |  A  |  S   |  G   |      |      |  A   |  A   |
  |   | N | N   | N   |  N  |  R   |  2   |      |      |  N   |  N   |
  |   | K | K   | K   |  K  |  2   |      |      |      |  K   |  K   |
  |   |   |     |     |     |      |      |      |      |      |      |
  |  The numbers along the top refer to the last column in each field |
  |   |   |     |     |     |      |      |      |      |      |      |
Parameters:
Integers
All integer fields are blank..
Floating Point
EPSR2 (F1) - Relative dielectric constant of the second medium.
SIG2 (F2) - Conductivity in mhos/mecer of the second medium.
CLT (F3) - Distance in meters from the origin of the coordinate system to the join between medium 1 and 2. This distance is either the radius of the circle where the two media Join or the distance out the plus X axis to where the two media join in a line parallel to the Y axis. Specification of the circular or linear option is on the RP cart. see figure 16.
CHT (F4) - Distance in meters (positive or zero) by which the surface of medium 2 is below medium 1.
(FS) & (F6) - Blank.
Notes:

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