Gnec is only available to user s who are licensed from lawrence livermore national labs to use nec4.
Discone antenna sheet metal.
Jan feb 2007 39 figure 7 wire table of an eznec discone model.
At lower frequencies a sufficient number of metal wires or rods in a spoke.
Figure 3 return loss of radioshack 20 043 discone antenna.
A discone may be made from solid metal sheet often copper which is practical for small indoor uhf antennas such as for wi fi.
The d3000n super discone antenna is an ultra wideband antenna covering amateur radio commercial 2 way cellular air traffic control and various utility frequency bands.
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Sheet metal as illustrated in figure 1.
This antenna is often implemented in a skeleton form.
A discone may be made from solid metal sheet often copper which is practical for small indoor uhf antennas such as for wi fi.
Only 16 left in stock order soon.
At lower frequencies a sufficient number of metal wires or rods in a spoke configuration is often used to approximate a solid surface.
The cone section below the disk will have the cone apex angle changed in a suite of tests.
This simplifies construction and reduces wind loading.
Sirio antenna sd2000n 100 mhz 2 ghz discone wide band antenna.
Although sometimes called a scanner antenna the discone antenna receives its name from its shape.
Wire antennas assembled from expanded metal or even poultry netting.
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When using rods at least eight should be used.
The disc and cone can be made from solid metal sheet but this would increase the windage i e.
The aor da3000 uses 16 while the diamond.
It consists of a top disc underneath which is a cone.
4 8 out of 5 stars 22.
Each of these broadband antennas has.
Gra d220 144 440 900 1200mhz 2m 70cm 33cm 25cm mini discone multiband wideband mobile scanner antenna 38 19 inch.
Figure 2 return loss of aor da3000 discone antenna.
Ed figure 5 shows the simulated.
Rust free stainless steel is employed in major component parts making the antenna rust resistant and durable.
This is the basic form for a 16 spoke discone antenna.
These antennas include the bicone discone helix and oth ers.
