FR490

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The FR490 antenna is a high-performance radio frequency (RF) antenna widely used in medium- and long-range communication systems. It is a wideband directional antenna, designed for transmitting and receiving signals in multiple frequency bands, operating from 60 MHz to 400 MHz. It is well-suited for applications such as public safety, local television (TV) broadcasting, and amateur radio.

The FR490 antenna is typically constructed from aluminum and uses a closed-end dipole design, which consists of two metal rods of equal length that are fed with a single coaxial transmission line. The open-circuit ends of the dipole are shorted together to form a symmetrical antenna structure, which is then enclosed in an aluminum housing. By adjusting the length of the dipole elements, the antenna can be tuned to a wide range of frequencies, from different transceiver bands to UHF TV channels.

The main advantage of the FR490 antenna is its versatility. It can be used in applications ranging from public service communications to ham radio and local TV broadcasting. The dipole elements of the antenna can readily be adjusted to match the required transmission frequency range, and the antenna can be easily installed in many different environments.

The FR490 antenna\'s performance depends on its construction and configuration. The dipole elements should be precisely tuned and the aluminum housing properly sealed in order to ensure optimal signal reception. The antenna must also be properly aligned with the main transmitter or receiver in order to achieve maximum performance. In addition, feed line length and other parameters must be taken into account in order to properly tune the antenna.

The FR490 antenna can be used in both mobile and stationary applications. It is widely used in portable radios, main transmitter arrays and repeater systems. It is also popular for public emergency services and other mission-critical applications, where wideband coverage, reliability and long-range performance are desired.

In summary, the FR490 antenna is a high-performance RF antenna used for transmitting and receiving signals in multiple frequency bands. Its enclosed dipole design provides excellent signal coverage over a wide range of frequencies, and its versatility makes it suitable for many applications ranging from public service communications to amateur radio and local TV broadcasting. Its performance is affected by its tuning and construction, and feed line length and other factors must be taken into account in order to properly configure the antenna.

The specific data is subject to PDF, and the above content is for reference