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FCC regulation operating on Unlicensed MURS band.

Thursday, June 16th, 2011

Multi-Use Radio Service (MURS)

In the Memorandum Opinion and Order and Second Report and Order (pdf) released May 23, 2002, the Commission updated the service rules regarding five Industrial/Business Pool VHF frequencies known in the PLMR community as the VHF “color dot” frequencies. These frequencies were moved from Part 90 to Part 95 and became a new Citizens Band Radio Service (CB) named the Multi-Use Radio Service (MURS). The Commission defines MURS as a private, two-way, short-distance voice or data communications service for personal or business activities of the general public.

Licensing

No licenses are issued for this service. An entity is authorized by rule to operate a MURS transmitter if it:

  • is not a foreign government or a representative of a foreign government;
  • uses the transmitter in accordance with 47 CFR. 95.1309;
  • otherwise operates in accordance with the rules contained in Sections 95.1301-95.1309.

Operations

TXL2 & RXL2 Make EDN Magazine’s Hot 100 Products

Tuesday, March 15th, 2011

Radiometrix is please to announce that our TXL2 and RXL2 radio modules have been included in EDN magazine’s Hot 100 Products, covering the most innovation electronics products of 2010. The multi-channel TXL2 transmitter and RXL2 receiver modules offer users reliable, high performance, wireless communication with low power consumption.

Available on the 433MHz European ISM Band and custom frequencies, these modules can be used to establish transparent one-way radio data links that support data rates of 9600 bps, with a line-of-sight range of 500m.

Unlike raw FM radio module alternatives, these modules take care of preamble, synchronization, bit balancing, error checking, and noise squelching, as well as all transmit timing, valid data identification and datastream buffering activities, allowing data links to be set up with the minimum of engineering effort. Each module can be assigned 1 of 8 unique addresses, so that a multiple radio link network can be established, provided no two modules are attempting to transmit at the same time on the same channel.TXL2 & RXL2

The transmitter has an output power of 10 dBm (10 mW) and the receiver has a sensitivity of -107 dBm. The modules require a 5V power supply and draw just 28 mA for transmitting and 22mA for receiving. They have an operating temperature range of -20 °C to +70 °C. These modules are ideally suited for fast prototyping and a variety of applications including industrial telemetry, data logging and remote data acquisition.

Radiometrix MURS Compliant Modules

Monday, November 2nd, 2009

2 Watt Multi-channel VHF Transceiver

The QPX1 transceiver module offers a 2 watt RF output VHF radio link, in a robust aluminium extruded casing. This unit is ideally suited to applications where existing lower powered transceivers provide insufficient range. The QPX1 is a multi-channel, narrowband design, suitable for licensed and unlicensed VHF allocations, FCC part 90 operation, and the 2M amateur band.

MURS Compliant QPX1

MURS Compliant QPX1

VHF Narrow Band FM 2 Watt Multi-channel transmitter

The QPT transmitter module offers a 2 watt RF output VHF radio link, in either a robust aluminium extruded casing, or a smaller footprint PCB mounted shield can. This unit is ideally suited to applications where existing lower powered transmitters provide insufficient range. The QPT1 transmitter is a multi-channel, narrowband design, suitable for licensed and unlicensed VHF allocations, FCC part 90 operation, and the 2M amateur band. Together with a matching LMR1 or RX1M receiver a one-way radio data link can be achieved over a distance of well over 10km (with a suitable antenna).

MURS Compliant

MURS Compliant

FCC Part 90 Compliant Modules

Thursday, June 18th, 2009

Radiometrix low power radio modules are available on FCC Unlicensed band frequencies. Many modules operate under FCC Part 15.231 (315MHz, 418MHz or 433MHz) and FCC Part 15.249 (915MHz), subject to limitations on Effective Radiated Power (ERP) or Electric Field Strength at 3 metres.

FCC Part 90 Compliant modules, 914MHz/915MHz products and custom frequencies are also available.
NEW

2 Watt Multi Channel VHF Transceiver

2 Watt Multi Channel VHF Transceiver

See our lastest product for the North American market, the FCC Part 90 Compliant QPX1 Transceiver.
This 2 Watt Transceiver is ideally suited to long range telemetry and command applications.

The following 12.5kHz channel spacing Narrow Band FM Radiometrix Modules can be customised to operate on one of the above bands.

 

TRANSCEIVERS  
BHX2 Narrowband Multi-channel 500mW UHF
QPX1 2 Watt RF output, VHF, FCC Part 90 Compliant, 10km range
SMX1 VHF, 128 channel, 10mW, usable range over 1km
SMX2 UHF, 128 channel, 10mW, usable range over 500m
UHX1 500mW RF power output, dual frequency capability (transmit on one frequency, receive on different frequency), range over 1km
USX2 UHF, 100mW, 128 channels, dual VCO allows transmitter section to operate on one frequency while receiver on another, usable range over 500m
TR1M VHF, 100mW RF output, 128 channels, usable range over 1km
TR2M UHF, 128 channels, usable range over 1km (100mW version)
   
TRANSMITTERS  
TX1M VHF, 100mW, 128 channels, matching receiver RX1M, usable range over 1km
TLC2H UHF, low cost, 32 channels, matching receiver RLC2H, 10mW, usable range over 500m
LMT2 UHF, low cost, 32 channels, 10mW & 100mW versions, usable range over 500m
LMT1 VHF, low cost, 10mW, usable range over 1km
TX2M UHF, 100mW, usable range over 1km
QPT1 2 Watt, FCC Part 90 Compliant, range over 10km
   
RECEIVERS  
RX1M Matching Transmitter TX1M
RLC2H Matching Transmitter TLC2H
LMR2 Matching Transmitter LMT2
LMR1 Matching Transmitter LMT1
RX2M Matching Transmitter TX2M

Radiometrix releases UHF radio data receiver

Saturday, April 18th, 2009
The  RX3G is a PLL synthesiser-based miniature PCB-mounted UHF radio data receiver device.

When used in conjunction with the matching TX3B-869-64 transmitters, the RX3G receiver can facilitate the implementation of wireless infrastructure that is capable of supporting speeds of 64kbits/s and transmission ranges up to 75 meters in buildings or 300 meters over open ground.

RX3G

RX3G

 RX3G-869.85-64

TX3B

TX3B

 TX3B-869-64

 The device has a receive sensitivity of -102dBm at 1ppm BER for 64kbits/s operation and -108dBm sensitivity at 1ppm BER for 15kbits/s operation and incorporates a wide range RSSI (Received Signal Strength Indicator) that measures the strength of an incoming signal over a range of approximately 50dB.

This allows assessment of the link quality and available margin with which the network can operate, so that a judgment can be made on what distances can be supported.

The device requires a regulated 5V supply with ripple content of less than 100mV peak-to-peak. The RX3G  complies with both the EN 301 489-3 EMC (thanks to internal filtering) and EN 300 220-3 radio standards.

It is suitable for one-to-one and multi-node wireless link topologies, and can be employed in a variety of applications, including automobile security, building security, environmental monitoring, inventory tracking, remote industrial process control and computer networking.

With its dimensions of 47mm x 16.8mm x 2.5mm and low power requirements (current consumption typically 10mA), the RX3G is optimised for use in portable, battery-powered wireless design such as hand-held terminals.

CONTACT LEMOS

Please contact headquarters in Barrington:
580 Maple Avenue, Suite 1
Barrington, RI 02806
Tel: 866-345-3667
Fax: 401-289-2382
sales@lemosint.com

For California enquiries please contact:
James R. McAuley
Sales Manager
jmcauley@lemosint.com

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