Product category:
Wireless Communications
News Release from: Radiometrix | Subject: NTX2 and NRX2
Edited by the Electronicstalk Editorial
Team on 27 July 2005
Narrowband radio modules go a long way
A true narrowband transmitter/receiver pair offers a low power, reliable datalink for applications where longer ranges (over 500m) are required at low datarates.
For all those manufacturers who require a wireless interface for their latest remote handset, diagnostic tool, or sensor head interface product, the new NTX2 transmitter and NRX2 receiver pair by Radiometrix is ideal Such an interface allows full remote operation and removes the need for awkward and expensive trailing cables
This article was originally published on Electronicstalk on 15 Jul 2008 at 8.00am (UK)
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This true narrowband NTX2/NRX2 pair offers a low power, reliable datalink for many applications, especially point-to-point and point-to-multipoint wireless links where longer ranges (over 500m) are required at low datarates (below 10Kbit/s).
The pair is therefore ideal for low power applications where existing wide band FM UHF modules have insufficient range or in an application where more than one transmitter-receiver pair needs to be operated simultaneously on two or more different frequencies without interfering with each other.
Other salient points of the NTX2/NRX2 include 25kHz channel spacing and feature-rich RSSI, analogue and digital baseband interfacing.
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Narrowband transceiver boosts range to 5km
The BHX2 transceiver is ideal for low-power applications, and can be used to overcome the operating range inadequacies of existing multichannel narrowband devices.
The company's SIL standard pinout and footprint is used, so easing incorporation into products and on to PCBs.
The pair has been designed to operate at the standard 434.075, 434.650 and 458.700MHz frequencies, with custom frequencies being available in the licence-exempt 433MHz (EU) and 458MHz (UK) band, helping to avoid overcrowding problems.
Specific applications include sensor nodes, EPOS and inventory tracking, remote industrial process monitoring, telemetry, telecommand and telecontrol.
Moreover the modules' small size and low power consumption lend them for to battery-powered portable applications, such as handheld terminals.
Radiometrix's NTX2/NRX2 pair conforms to ETSI EN300 220-3 (radio) and EN301 489-3 (EMC).
The NTX2 transmitter features a three-stage crystal controlled VCXO, a maximum datarate of 10Kbit/s, and a transmit power of +10dBm (10mW).
It operates on a 2.9-15V at 18mA supply with internal 2.8V voltage regulator.
The NRX2 receiver features a double conversion FM superhet design with SAW bandpass filter (image rejection 50dB).
Intermediate frequencies are 21.4MHz and 455kHz, and the supply range is 2.9-15V at 14mA, with internal 2.8V voltage regulator.
The NRX2's maximum datarate is 10kbit/s, and receiver sensitivity for 12dB SINAD is -118dBm.
For 1ppm BER, the sensitivity is -112dBm.
The local oscillator (LO) reradiation is less than -60dBm; adjacent channel is -70dBm, and blocking is -84dB. Request a free brochure from Radiometrix ...
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