Home |
Search |
Today's Posts |
#1
![]() |
|||
|
|||
![]()
NOW AVAILABLE ** New Program "RADIALS2.exe"
This program takes a fresh, revolutionary look at the design and performance of a set of shallow-buried ground radials. Gone at last are the days when 118.5 was a sacred number. A radial wire is considered as a lossy transmission line, there being no point in having it any longer than that at which its input impedance Zin has converged on its characteristic impedance Zo. The current flowing in the line at that distance from the input end is clearly small enough not to warrant extending the radial any further. With a crude knowledge of the resistivity and permittivity of the soil the greatest practical length of radial wires can be calculated. The number of radials can then be estimated on the logical grounds of economics versus antenna + transmitter radiating efficiency. Download program RADIALS2, 53 kilobytes, in a few seconds from website below and run immediately. ---- .................................................. .......... Regards from Reg, G4FGQ For Free Radio Design Software go to http://www.btinternet.com/~g4fgq.regp .................................................. .......... |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Inverted ground plane antenna: compared with normal GP and low dipole. | Antenna | |||
QST Article: An Easy to Build, Dual-Band Collinear Antenna | Antenna | |||
ground radials? | Antenna |