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Are discone antennas good?

A discone antenna is a version of a biconical antenna in which one of the cones is replaced by a disc. It is usually mounted vertically, with the disc at the top and the cone beneath.

What is a discone antenna used for?

The discone antenna or discone aerial is often used where an omnidirectional wide band or bandwidth RF antenna design is needed. The discone antenna is used for many radio communication applications from radio scanning and monitoring for the commercial or military services to the home scanner enthusiasts.

Does a discone antenna have any gain?

The mobile antenna lists gain as unity and VSWR as 2:1 typical and 2.5:1 max. The specs for the discone are unity gain with a maximum VSWR or 1.5:1 accross 132 Mhz - 3 GHz.May 21, 2020

What is the Polarisation of Discone antenna?

It is usually mounted vertically, with the disc at the top and the cone beneath. Omnidirectional, vertically polarized and with gain similar to a dipole, it is exceptionally wideband, offering a frequency range ratio of up to approximately 10:1.

How does a horn antenna work?

A horn antenna is used to transmit radio waves from a waveguide (a metal pipe used to carry radio waves) out into space, or collect radio waves into a waveguide for reception. ... The waves then radiate out the horn end in a narrow beam.

image-Are discone antennas good?
image-Are discone antennas good?
image-Are discone antennas good?
image-Are discone antennas good?
image-Are discone antennas good?
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How does a biconical antenna work?

Biconical antennas (also known as Bowtie or Butterfly antennas) are broadband dipole antennas that are made up of two roughly conical conductive objects, nearly touching at their points. ... A coaxial feed is connected to the center of the antenna (where the two cones meet).Jul 26, 2017

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How does a ground plane antenna work?

As the name indicates the antenna ground plane acts as a simulated ground. It is found that for a monopole antenna like a quarter wavelength vertical, the ground acts as a plane to reflect the radio waves so that an image of the top half of the antenna is seen in the Earth.

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What is a horizontal antenna?

Horizontal polarisation: This form of antenna polarisation has horizontal elements. It picks up and radiates horizontally polarised signals, i.e. electromagnetic waves with the electric field in the horizontal plane. Vertical polarisation: This form of antenna is typified by the vertical elements within the antenna.

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How does a Slim Jim antenna work?

SLIM JIM ANTENNA PROJECT. The Slim Jim is a vertically polarized omnidirectional end-fed antenna having considerable "gain" and this is concentrated almost parallel to ground toward the horizon rather than skyward making it more efficient than a ground plane type antenna by about 50 percent better.

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How does a ferrite rod antenna work?

The ferrite rod antenna operates using the ferrite material to "concentrate" the magnetic component of the radio waves through the pick-up coil. ... The fact that this RF antenna uses the magnetic component of the radio signals in this way means that the antenna is directive.

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What is a Yagi type antenna?

A Yagi–Uda antenna or simply Yagi antenna, is a directional antenna consisting of two or more parallel resonant antenna elements in an end-fire array; these elements are most often metal rods acting as half-wave dipoles.

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What happens when horn antenna is made large?

Horn antenna gain

As antennas tend to have higher gain levels as they become larger, so it can intuitively be seen that the gain and directivity of the horn antenna will increase with frequency.

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Is horn antenna directional?

Horn antennas often have a directional radiation pattern with a high antenna gain, which can range up to 25 dB in some cases, with 10-20 dB being typical. ... Horn antennas are somewhat intuitive and relatively simple to manufacture.

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What is dual band antenna?

  • Dual-Band Blade Antenna, a type of commercial RF "Blade antenna" that uses a "plane and slot design" to get efficient omni-directional coverage at two distinctly different RF bands. It has additive properties similar to a monopole antenna.

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Can TV antenna be used as radio antenna?

  • The frequencies used for FM radio transmission are very close to those used for VHF television signals, and an ordinary TV antenna will work beautifully with your FM radio or your stereo tuner. You can use either an indoor or outdoor antenna, though the outdoor variety often provides better reception.

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What is a s-band antenna?

  • The S-band, with the large antenna on the satellite and the circular polarization, allows communicating on ground (Earth) with small omni-directional antennas: this means that antennas of few centimetres can move in any direction and continue receiving the satellite signal.

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What is bi directional antenna?

  • A Bi-Directional Amplifier (BDA) can be a very effective component of a distributed antenna system (DAS). A BDA allows cell phone users to access service in locations that are completely obstructed from a cell tower.

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Can you transmit on a discone antenna?

Although it is widely used for receiving applications, the discone antenna is less commonly used for transmitting. ... Although it offers a wide bandwidth, it is not optimised for a particular band of frequencies and is less efficient than many other types of RF antenna design that can be used.

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How does a discone antenna work?

A discone antenna is a version of a biconical antenna in which one of the cones is replaced by a disc. It is usually mounted vertically, with the disc at the top and the cone beneath.

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Where is discone antenna used?

The discone antenna or discone aerial is often used where an omnidirectional wideband or bandwidth RF antenna design is needed. The discone antenna is used for many radio communication applications from radio scanning and monitoring for commercial or military services to the home scanner enthusiasts.

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Can you use a TV antenna for a scanner?

TV antennas, depending of the type, have been known to work well with a scanner since they are sensitive to the UHF/VHF bands too. You'll have to give it a go and see if yours will work for you, there is no harm in trying.

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What is omnidirectional radiation pattern?

In radio communication, an omnidirectional antenna is a class of antenna which radiates equal radio power in all directions perpendicular to an axis (azimuthal directions), with power varying with angle to the axis (elevation angle), declining to zero on the axis.

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What is a discone antenna?

  • A discone antenna derives its name from its unique appearance. The antenna is composed of a disc shaped radiator on top of a cone shaped ground plane. The two elements can be either solid or composed of separate elements. An antenna constructed from separate elements is lighter and more cost effective to construct.

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How do you make a HF discone?

  • The main part is the "cone" which provides wideband coverage. So a simple HF discone can be made using two tall supports, one wire hang between them. to the center of that line the feedpoint is attached (center of coax) and two wires are going down just like Inv V antenna and are attached to coax braid.

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Where are all the HF discones?

  • There are HF discones installed all over the place, mostly at military installations (or government-funded scientific research locations). First, don't be misled by the "50 MHz to 1.2 GHz" stuff. It's all nonsense. Those antennas are discones for 150 MHz through 1.2 GHz (3 octaves coverage).

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What is the best wideband scanner antenna on the market?

  • Skyscan Desktop 25-1300MHZ Scanner Antenna - Discone. This is the best all round wideband desktop scanner antenna on the current market, keeping within the famous discone design but smaller for internal u... A wide band base station scanner antenna that is much easier to install than any discone type antenna.

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