Home |
Search |
Today's Posts |
#11
![]() |
|||
|
|||
![]()
Richard Fry wrote:
. . . No, the BL&E paper (accurately) stated that 194.5 mV/m is the theoretical maximum field possible at 1 mile for 1 kW radiated by a perfect 1/4-wave monopole over a perfect ground plane. The peak values they measured came very close, but never quite achieved that value. Can you explain why they very nearly accomplished this perfect ground value even though the ground wave signal had to propagate one mile over ground of finite conductivity? What do you think would have happened to the signal strength if the mile of intervening ground had been replaced by a perfect ground? It would appear that with the average of the two distances, my model accords quite closely to BL&E. Mr. Clark - kindly note that in your first quote above you say that, if anything, "modelers" show MORE response than BL&E Then when pressed a bit you say that your model "accords quite closely" with BL&E. Yet the results of my EZNEC near-field model showed considerably LESS ground wave field at 1 km than either the FCC approach or the BL&E data. If you can answer the questions I asked above, you should understand why EZNEC doesn't predict the same value as the obviously (to me) normalized BL&E values. I'll look into the correspondence between EZNEC and FCC predictions. Roy Lewallen, W7EL |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Elevation Patterns of Ground Mounted Vertical Monopoles | Antenna | |||
FS: Hy-Gain AV-640 Vertical (Mint) | Swap | |||
Vertical ant gain vs No radials | Antenna | |||
FS: Hy-Gain AV-640 Vertical (Mint) | Swap | |||
1/4 wave vertical vs. loaded vertical | Antenna |