Linx Technologies' 250 Series High Power Wireless UART
RF Transceiver Module Offers Exceptional
250 Series High Power
Wireless UART RF Transceiver Module Offers Exceptional Range
July 8, 2013 — The
250 Series RF transceiver module is designed for reliable bi-directional transfer of digital
data over distances of up to 4 miles (6.4 km), line of sight. Operating in the 902
to 928 MHz ISM (Industrial Scientific and Medical) frequency band, the module is capable
of generating +23.5 dBm into a 50-ohm load and achieves an outstanding typical sensitivity
of –105 dBm. This high output power gives the module remarkable range and also helps overcome
noisy environments at shorter ranges. Regulations in the country of operation dictate the maximum
legal output power, so the final system range may be less depending on the country of operation.
250 Series module implements a Frequency Hopping Spread Spectrum (FHSS) protocol along with
networking and assured delivery features. It has a Universal Asynchronous Receiver Transmitter
(UART) serial interface that can be connected directly to microcontrollers, RS-232, RS-485 converters
or USB adaptors. The module automatically handles all radio functions resulting in a UART-to-antenna
The transceiver has a robust built-in protocol. A Carrier Sense Multiple
Access (CSMA) algorithm assures the channel is clear before sending data. Networking and assured
delivery enable many system configurations. The transceiver contains several registers, accessed
through the UART, that control its configuration and operation.
Low power modes as well
as adjustable transmitter output power allow the designer to optimize the current consumption
for the available power supply in the application. Compared to XBEE and WIT900 products, current
consumption on both the transmit side and receive side is significantly less; as low as 25%
of these products’ current requirements. In addition, the 250 Series Transceiver is a lower
cost solution to other similar products, such as XBEE or WIT910.
for the 250 Series transceiver module that require reliable long range digital date transfer
include long range data links, wireless sensors, asset tracking, automated meter reading, industrial
automation as well as home automation.
An evaluation module is available that has the
module on a board with an antenna connector and voltage regulator. There are variants with United
States FCC, Industry Canada, and Mexico COFETEL certifications. This greatly reduces the expense
and time to implement a wireless solution.
About Linx Technologies
makes wireless simple by developing and manufacturing wireless products that are easy
engineers of all skill levels to use. The company’s RF modules, remote controls, antennas and
connectors make it easy for engineers to integrate wireless features without the hassle and
expense of engineering RF functionality from scratch.
For customers who need help implementing
Linx modules, Linx offers design services including board layout assistance, programming, certification
advice and packaging design. For more complex RF solutions, Apex Wireless, a division of Linx
Technologies, creates optimized designs with RF components and firmware selected for the customer’s
159 Ort Lane
Merlin, OR, US 97532
Phone: +1 800 736 6677
+1 541 471 6256 (outside U.S.)
Fax: + 1 541 471 6251