NRX1-173.250-10 RADIOMETRIX, NRX1-173.250-10 Datasheet

RECEIVER, 173.25MHZ

NRX1-173.250-10

Manufacturer Part Number
NRX1-173.250-10
Description
RECEIVER, 173.25MHZ
Manufacturer
RADIOMETRIX
Datasheet
The NRX1 is a VHF radio data
receiver and it offers a low power,
reliable data link in a Radiometrix
SIL standard pin out and footprint.
It is an enhanced, low cost version of
the Radiometrix RX1, but in a slightly
larger dimension.
NRX1 is compatible with the TX1
series of transmitters, and the BiM1
transceiver.
Features
NRX1 is a VHF equivalent of Radiometrix UHF NRX2 receiver and it is available for licence-
exempt operation in the UK 173MHz bands and European 169MHz band. It is also available
in the Australian frequency of 151.300MHz. NRX1 modules combine effective screening with
internal filtering to minimise spurious radiation and susceptibility thereby ensuring EMC
compliance. They are particularly suitable for one-to-one and multi-node wireless links where
longer ranges are required at low to moderate data rates. Applications include building
security, EPOS and inventory tracking, remote industrial process monitoring and data
networks. Because of their small size and low power consumption, these modules are ideal for
use in battery-powered portable applications such as handheld terminals.
Technical Summary
Radiometrix Ltd.
Issue 1, April 2007
Designed to comply with harmonised radio standard EN 300 220-3 and EMC standard
EN 301 489-3
Frequencies available as standard: 151.3000MHz, 169.4125MHz, 173.2250MHz and
173.2500MHz
Other custom frequencies from 120MHz to 180MHz available to order
Data rates up to 10 kbps with 25kHz channel spacing
Usable range to 10km+ with matching transmitter
Fully screened
Double conversion FM superhet
Supply range: 2.9V - 15V @ 10mA (internal 2.8V voltage regulator)
Data bit rate: 10kbps max.
Receiver sensitivity: -120dBm (for 12dB SINAD)
Local Oscillator (LO) re-radiation: <-60dBm
Adjacent Channel: -70dBm
Blocking: -86dB
Low cost VHF Narrow Band FM receiver
Radiometrix
Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England
Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233
NRX1 receiver data sheet
Figure 1: NRX1-173.225-10
NRX1
Page 1

Related parts for NRX1-173.250-10

NRX1-173.250-10 Summary of contents

Page 1

... Usable range to 10km+ with matching transmitter Fully screened NRX1 is a VHF equivalent of Radiometrix UHF NRX2 receiver and it is available for licence- exempt operation in the UK 173MHz bands and European 169MHz band also available in the Australian frequency of 151.300MHz. NRX1 modules combine effective screening with internal filtering to minimise spurious radiation and susceptibility thereby ensuring EMC compliance ...

Page 2

... Radiometrix Ltd. NRX1 receiver data sheet Page 2 ...

Page 3

... Power on to valid audio Power on to stable data out Radiometrix Ltd. 47mm Radiometrix 30.48mm (1.2" holes of 0.7mm dia pin spacing 2.54mm (0.1") Figure 3: NRX1 pin-out and dimension 151.3000MHz 169.4125MHz 173.2250MHz 173.2500MHz (other VHF 120-180MHz by special order) ±2.5kHz 25kHz 1 2.9 – 15V 10mA ...

Page 4

... RX Received Signal Strength Indicator (RSSI) The NRX1 has a wide range RSSI which measures the strength of an incoming signal over a range of 60dB or more. This allows assessment of link quality and available margin and is useful when performing range tests. The output on pin 11 of the module has a standing DC bias 0.5V with no signal, rising to 2.4V at maximum indication. ∆ ...

Page 5

... Loops are relatively inefficient but have good immunity to proximity detuning, so may be preferred in shorter range applications where high component packing density is necessary. Integral antenna summary: Ultimate performance Ease of design set-up Size Immunity to proximity effects Radiometrix Ltd. whip helical *** ** *** ** * *** ** * NRX1 receiver data sheet ), tuned and 2 loop * * ** *** Page 5 ...

Page 6

... RF trim wire length or expand coil for best results track width = 1mm RF min. area 500mm capacitors may be variable or fixed C match (values depend on loop dimensions) tune RF GND Figure 5: integral antenna configurations NRX1 receiver data sheet 2 Page 6 ...

Page 7

... PCB area around the module with ground plane. Variants and ordering information The NRX1 receiver is manufactured in the following variants as standard: NRX1-151.300-10 NRX1-169.4125-10 NRX1-173.225-10 NRX1-173.250-10 Matching transmitter: TX1-xxx.xxx-10 (where xxx.xxx is the operating frequency) Radiometrix Ltd. 1/4-wave whip (151.300MHz Australian licence exempt frequency) (169.4125 European licence exempt frequency -169MHz band) (for UK alarm applications on 173 ...

Page 8

... Copyright notice This product data sheet is the original work and copyrighted property of Radiometrix Ltd. Reproduction in whole or in part must give clear acknowledgement to the copyright owner. Limitation of liability The information furnished by Radiometrix Ltd is believed to be accurate and reliable. Radiometrix Ltd reserves the right to make changes or improvements in the design, specification or manufacture of its subassembly products without notice ...

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