SATEL is Finnish radio modem manufacturer specialising in design and manufacture of radio modems for land survey, SCADA, traffic control and telemetry applications.
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About the Company
SATEL specializes in designing and manufacturing radio modems for long range wireless data transmission. The company was founded in 1986. SATEL's first product was a wrist alarm, shortly followed by production of the first radio modem. Product development has been guided by emphasizing RF sensitivity and ensuring reliability and durability.
Both SATEL's product development and factory are located in Finland. The distribution network of SATEL covers over 100 countries. Approx 90% of sales is exported.
Satel Radio Video
Radio modems in general
A radio modem transmits data over a wireless connection to another radio modem over a point-to-point or -multipoint link. Radio modems are independent of mobile and satellite network operators and no cost is thus associated with transferring data. Private radio modem networks can use either unlicensed (e.g. ISM band) or licensed frequency bands (UHF, VHF).
The operation range of a radio modem varies depending on the transmission power, antenna gain and mast height, and environment. In rural areas a 1 W radio modem with a line-of-sight radio link may range over 20 km and even up to 50 km in exceptionally amicable environments. In dense metropolitan areas, a corresponding range may vary from several kilometers to over 10 km. With a 10 W radio modem, a range of up to 80 km can be reached in favorable environments. By using radio modem repeaters, much broader areas can be covered.
http://www.satel.com/products/radio-modems/
Products
Serial and TCP/IP communication
The SATELLINE radio modem family offers transparent serial data communication (RS-232, RS-485, RS-422). These products are used in applications ranging from Mt Everest to power distribution networks and from professional motor sports to runway telemetry at airports. Lightweight SATELLINE-M3-TR3 / -TR4 modules are designed to be integrated into a host device, for instance for transfer of GNSS correction data in a land surveying rover or RTK base station.
The SATELLAR Digital System radio modem family, which was introduced in November 2008, broadened the offering to TCP/IP based applications. It is based on a Linux operating systems and enables customer specific applications.
Setup made easy with license-free products
SATELLINE-1870E and SATELLINE-EASy 869 modems operate in the Europe-wide license-free 868 - 870 MHz band. Both have a maximum transmit power 500 mW, which enables coverage up to 2.5 km. By setting up a network with repeater radio modems, much longer distances can be achieved. The radio modems can accommodate point-to-point as well as point-to-multipoint communications.
Higher power - longer range
The radio modems of the SATELLINE-EASy -family are suitable for high-end applications requiring a longer range. With these radio modems, a reliable radio modem network can be built across vast areas.
Radio modems are available for both the UHF (330 - 473 MHz) and VHF (135 - 174 MHz and 218 - 238 MHz) frequency bands. The modems using the VHF frequencies are specifically designed for data applications, where large distances with obstacles such as Mountains and valleys are to be spanned.
Different channel widths (12.5 / 20 / 25 kHz) and data rates (9.600 / 19.200 bit/s) are available in order to meet both the needs of the system and the requirements of the local authorities. The transmit power is adjustable between 100 mW and 1 W. In addition, radio modems with 1W, 10W and 35W transmitter power are available. This allows transmission distances of up to several tens of kilometers, depending on the environment and the used antenna type. Typical applications include machine control, utility distribution networks, water facilities, precision farming and land surveying.
Keeps wind and weather
In many applications, radio modems are used in the field and must withstand wind and weather conditions. Offshore installations pose the additional burden of salt water and mist. In such harsh environments, the SATELLINE-EASy Pro, in its rugged aluminum case with IP67 rating, can be used. Thanks to the maximum output power of 25 or 35 W it can range up to 80 km at transmission speeds of up to 19200 bit/s.
Compatibility
As there is no de facto standard for long range narrow band data communication, cross brand compatibility is an important aspect for radio modem deployers. In 2009, SATEL introduced product variants that are compatible with products from other manufacturers who use the so-called PCC protocol.
Source of the article : Wikipedia
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