EW
N
Issue B, 17 March 2005
Radiometrix
Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England
Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233
NTX2/NRX2
UHF Narrow Band FM TX & RX
The NTX2 transmitter and NRX2
receiver offer a low power, reliable
data link in a Radiometrix SIL
standard pin out and foot print. This
makes the NTX2/NRX2 pair ideally
suited to those low power applications
where
existing
single
frequency
wideband
UHF
modules
have
insufficient range.
Figure 1: NRX2-434.650-10
NTX2-434.650-10
Features
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Conforms to ETSI EN 300 220-3 (radio) and EN 301 489-3 (EMC)
Standard frequencies: 434.075MHz, 434.650MHz and 458.700MHz
Custom frequencies available in 433MHz (EU) and 458MHz (UK) band
Data rates up to 10kbps
Usable range over 500m
25kHz Channel spacing
Longer range compared to Wide Band FM modules
Available for licence-exempt operation in the 433MHz (EU) and 458MHz (UK) bands, the NTX2 &
NRX2 modules combine effective screening with internal filtering to minimise spurious radiation and
susceptibility thereby ensuring EMC compliance. They can be used in existing low data rate (<10kbps)
applications where the operating range of the system using TX2 transmitter and RX2 receiver need to
be extended. They are particularly suitable for point-to-point and point-to-multipoint wireless links
where longer ranges are required at low data rates. Applications include sensor nodes, EPOS and
inventory tracking, remote industrial process monitoring, telemetry, telecommand and telecontrol.
Because of their small size and low power consumption, both modules are ideal for use in battery-
powered portable applications such as handheld terminals.
Transmitter – NTX2
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3 stage crystal controlled VCXO
Supply 2.9V - 15V @ 18mA (internal 2.8V voltage regulator)
Data bit rate: 10kbps max.
Transmit power: +10dBm (10mW)
Receiver – NRX2
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Double conversion FM superhet
SAW band pass filter, image rejection: 50dB
Intermediate Frequencies (IF): 21.4MHz, 455kHz
Supply range: 2.9V - 15V @ 14mA (internal 2.8V voltage regulator)
Data bit rate: 10kbps max.
Receiver sensitivity: -118dBm (for 12dB SINAD)
Receiver sensitivity: -112dBm (for 1ppm BER)
Local Oscillator (LO) re-radiation: <-60dBm
Adjacent Channel: -70dBm
Blocking: -84dB
NTX2/NRX2 data sheet
Page 1
Radiometrix Ltd.,
RADIOMETRIX [ RADIOMETRIX LTD ]
