Although sometimes called a scanner antenna the discone antenna receives its name from its shape.
Discone antenna sheet metal.
The cone section below the disk will have the cone apex angle changed in a suite of tests.
The disc and cone can be made from solid metal sheet but this would increase the windage i e.
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This simplifies construction and reduces wind loading.
This antenna is often implemented in a skeleton form.
At lower frequencies a sufficient number of metal wires or rods in a spoke configuration is often used to approximate a solid surface.
At lower frequencies a sufficient number of metal wires or rods in a spoke.
Wire antennas assembled from expanded metal or even poultry netting.
Figure 2 return loss of aor da3000 discone antenna.
Ed figure 5 shows the simulated.
Gra d220 144 440 900 1200mhz 2m 70cm 33cm 25cm mini discone multiband wideband mobile scanner antenna 38 19 inch.
These antennas include the bicone discone helix and oth ers.
Small uhf forms may be constructed of sheet metal and thus exhibit the distinctive disk and cone.
A discone may be made from solid metal sheet often copper which is practical for small indoor uhf antennas such as for wi fi.
Rust free stainless steel is employed in major component parts making the antenna rust resistant and durable.
Jan feb 2007 39 figure 7 wire table of an eznec discone model.
Each of these broadband antennas has.
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.
A discone antenna is a version of a biconical antenna in which one of the cones is replaced by a disc.
The aor da3000 uses 16 while the diamond.
Sheet metal as illustrated in figure 1.
It consists of a top disc underneath which is a cone.
This is the basic form for a 16 spoke discone antenna.
Gnec is only available to user s who are licensed from lawrence livermore national labs to use nec4.
Sirio antenna sd2000n 100 mhz 2 ghz discone wide band 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.
Figure 3 return loss of radioshack 20 043 discone antenna.
Wind resistance or wind loading and its weight.
