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
...........................................................
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Thierry
Hi reg,
Vos logiciels sont tjs les bienvenus.
You are everywhere. Even on french forums ! I 'm going to test immediately your software as I just have written some pages about "mysteries of radials..." Thanks for your help.
Thierry, ON4SKY http://www.astrosurf.com/lombry
"Reg Edwards" wrote in message news:cet0b1$a3g$
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 ...........................................................
Hi reg,
Vos logiciels sont tjs les bienvenus.
You are everywhere. Even on french forums !
I 'm going to test immediately your software as I just have written some
pages about "mysteries of radials..."
Thanks for your help.
Thierry, ON4SKY
http://www.astrosurf.com/lombry
"Reg Edwards" <g4fgq.regp@ZZZbtinternet.com> wrote in message
news:cet0b1$a3g$1@sparta.btinternet.com...
NOW AVAILABLE ** New Program "RADIALS2.exe"
This program takes a fresh, revolutionary look at the design and
performance
of a set of shallow-buried ground radials. Gone at last are the days when
118.5 was a sacred number.
A radial wire is considered as a lossy transmission line, there being no
point in having it any longer than that at which its input impedance Zin
has
converged on its characteristic impedance Zo. The current flowing in the
line at that distance from the input end is clearly small enough not to
warrant extending the radial any further. With a crude knowledge of the
resistivity and permittivity of the soil the greatest practical length of
radial wires can be calculated. The number of radials can then be
estimated
on the logical grounds of economics versus antenna + transmitter radiating
efficiency.
Download program RADIALS2, 53 kilobytes, in a few seconds from website
below
and run immediately.
----
...........................................................
Regards from Reg, G4FGQ
For Free Radio Design Software go to
http://www.btinternet.com/~g4fgq.regp
...........................................................
You are everywhere. Even on french forums ! I 'm going to test immediately your software as I just have written some pages about "mysteries of radials..." Thanks for your help.
Thierry, ON4SKY http://www.astrosurf.com/lombry
"Reg Edwards" wrote in message news:cet0b1$a3g$
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 ...........................................................
