Magnetic antenna 86.79 MHz
A magnetic antenna with an operating frequency of 86.79 MHz, which is used, for example, in a railway communication system. This frequency belongs to the VHF (very high frequency) band, which is characterized by good coverage over long distances and reliable transmission even in rugged terrain, which is ideal for the needs of railway traffic. It is also used for remote control of acoustic information devices for the blind (SRD) and in urban public transport systems.
The base of the antenna consists of a magnetic base, thanks to which it is possible to place the antenna on any metal base. An RG58 cable with a length of 1 m is brought out from the antenna, which is terminated with a BNC (m) connector.
Connector specifications BNC:
BNC high-frequency coaxial connectors are manufactured with an impedance of 50 or 75 Ohm. They are designed for use with various types of coaxial cables, eg types RG-58, RG-59, to RG-179, RG-316. The operating frequency range is up to 4 GHz and operating temperature - 40 °C to + 155 °C. Mounting the connector is quick and easy, thanks to the snap-in bayonet, the connection is firm and solid. The connection and disconnection of the connectors is guaranteed for up to 500 cycles. These connectors are most often used in radio telecommunications, television technology or test equipment.
Cable specifications RG58/U:
The RG58 coaxial cable is compatible with connectors applicable to a 5 mm cable diameter. It is mainly used for the 0-1 GHz frequency range, it can also be used for higher frequencies, but at the cost of higher attenuation. The characteristic impedance of the cable is 50 Ω. The reduction factor is fixed at 0.66. The most common cables of this type have a temperature range of -20 to 75 ° C. This cable is suitable for external WiFi / GPS / GSM antennas. It is also often used for creating cable adaptors with connectors such as BNC / FAKRA / FME / N / SMA / TNC and others. There are also specially modified types of RG58 cables for outdoor use, which are UV resistant, as well as for use in extreme conditions. There are made of different materials, different qualities.
Technical parameters can be found in the attached datasheet.