

Brief rundown on the file format:

design frequency
C factor (~300 for meters, ~11811 for inches, ~984.25 for feet)
# of elements
x,y,d (for each element)

x - element length
y - distance to ordinal reflector
d - diameter

OK - Those exact type C factors:
299.792458 meters,
11802.829 inches,
983.56909 feet.

Sample file:

144.200
11802.829
3
42 0 .5
38.5 20 .5
34 40 .5


Note of course that the elements are wholly made up, and probably won't
work for bupkus.
