Are discone antennas any good?
Few discone antennas are as reliable as this one. The frequency coverage of this antenna is also remarkable. Used with a broadband scanner radio, it can pick up signals 200 miles away. Of course, that’s no surprise considering it has a 325-1300 MHz receive.
Does a Discone antenna have any gain?
The specs for the discone are unity gain with a maximum VSWR or 1.5:1 accross 132 Mhz – 3 GHz.
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.
Is a Discone antenna omnidirectional?
Discone antennas are wide bandwidth and omnidirectional radiation antennas that are widely used in VHF and UHF broadcasting systems. The antenna consists of a circular disc and a cone whose apex approaches the centre of the disc.
Can you use a TV antenna for a scanner?
Yes as long as the cable is 75 ohm it will work fine. You will need to inspect the antenna and connections for damage or bad wiring. If it has 300 ohm line then you will need a 300 to 75 ohm transformer. Just buy a pl-259 to solder to the 75 OHM line and connect that to the scanner.
What is the polarization of a 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.
Do you need to ground a Discone antenna?
Member. NEC (and R56 Manual) do not allow soldering of ANY ground wires. Under most conditions an indoor antenna is not required to be grounded.
What is a Marconi antenna?
The Marconi antenna is a vertical wire with a length of 1/4 of the working wavelength, feeded through its lower end. It needs a ground plane with very good conductivity. The Marconi radiator is resonant to any odd multiple of a quarter-wave length.
How does a Discone antenna work?
Discone antennas are vertically polarized, but the vertical radiation pattern very narrow. This makes discone antennas most sensitive to signals coming from the horizon rather than a nearby RF source. The gain of discone antennas is similar to that of a dipole antenna. Yet they can have a gain of less than zero.