SATEL
SATEL is Finnish radio modem manufacturer that specializes in developing and selling of independent radio networking technology solutions for i.a. land survey, SCADA, traffic control and telemetry applications.
| Industry | Telecommunications Automation SCADA Land Surveying Real Time Kinematic Intelligent Transportation Systems Telemetry |
|---|---|
| Founded | Salo, Finland (1986) |
| Headquarters | , Finland |
Area served | Worldwide |
| Products | Radio modems |
| Website | satel.com |
About the Company
SATEL develops and sells high quality private radio technology solutions that enable secure, mission critical connections. 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.
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 35 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.
Products
Serial and TCP/IP communication
The SATEL 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 SATEL-TR4+ / SATEL-TR49 modules are designed to be integrated into a host device, for instance for transfer of GNSS correction data in a land surveying rover or real-time kinematic (RTK) base station.
The SATEL XPRS IP radio router 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.[1]
Setup made easy with license-free products
SATELLINE-EASy 869 and SATEL Compact-Proof 869 modems operate in the Europe-wide license-free 869.400 - 870 MHz band. Both have a maximum transmit power 500 mW, which enables coverage up to 5 km. Both models are also available for Indian licence-free 865 - 867 MHz frequency band, with max 1 W output power. 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 and SATEL-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 high 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.
For outdoor usage other good options are SATEL Proof-TR4 / -TR9 heavy-duty radio modems with the IP69K rating, which is the highest protection available. It protects against ingress of dust, high temperature and high-pressure water. The products consist of the IP69K sealed housing and a radio module from the following frequency variants: 403–473 MHz and 902–928 MHz ISM licence-free band.
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.[2]
External links
References
3. <http://www.gim-international.com/news/id4710-Transceiver_Radio_Modem.html/>
4. <http://www.hydro-international.com/news/id3927-Transceiver_Radio_Modem.html/>