Telecoms, Datacoms, Wireless, IoT


433 MHz modem delivers 'transparent' half-duplex wireless link

1 November 2006 Telecoms, Datacoms, Wireless, IoT

Radiometrix says that its 9600 baud TDL2A radio modem module is, for the first time, totally transparent, making it very simple to create a half-duplex link. The five-channel TDL2A effectively replaces a serial cable interface in a multitude of applications where trailing cables are impractical or undesirable, delivering a foolproof, low power, 100 m data link.

Unlike other solutions on the market that require the user to possess a considerable amount of radio expertise to successfully install, the company claims the TDL2A makes no such demands. Combining a sophisticated 433 MHz band five-channel transceiver with a dedicated data communication processor, the module deals with any 9600 baud asynchronous data stream issues without requiring any user intervention or interface, and provides all necessary buffering, packetisation, framing, coding, decoding and reconstitution. Further, the TDL2A does not require any additional software, and even eliminates the need for a transit-enable pin as it constantly monitors the channel for valid data. All the user has to do is add a 5 V power supply and aerial says Radiometrix.

Unlicensed operation is permitted throughout Europe under EN300-220. For multiple radio systems (polled networks) the TDL2A can be set to one of eight unique addresses. Additonally, as the TDL2A modules operate on one of five non-overlapping pre-set frequencies in the 433 MHz band, several modules can be in use simultaneously in the same area without interference.

Housed in an industry-standard 33 x 25 x 7 mm BiM2 footprint case, the TDL2A has a transmit power of only 10 mW. The units feature good RF specifications, including a receiver blocking performance of 84 dB. Receiver sensitivity is


-107 dBm (1%BER), adjacent channel rejection is 65dB at ±320 kHz and spurious emission is less than 65 dBm.

Applications are numerous and varied, but include machine to machine interfaces, industrial control and telemetry, handheld portable terminals, medical equipment and environmental monitoring and control systems.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Quectel partners with GEODNET
Quectel Wireless Solutions Telecoms, Datacoms, Wireless, IoT
Quectel Wireless Solutions has partnered with GEODNET to deliver Quectel’s Real-Time Kinematic (RTK) correction services, enabling high-precision positioning for IoT applications.

Read more...
Bringing Bluetooth Channel Sounding to automotive and beyond with KW47
Altron Arrow Telecoms, Datacoms, Wireless, IoT
NXP’s new Channel Sounding-certified KW47 and MCX W72 wireless MCUs are set to help automakers with distance measurement, bringing an additional ranging solution for car access and autonomous systems, and will be utilised across a broader spectrum of applications.

Read more...
Dual-band GNSS antenna
RF Design Telecoms, Datacoms, Wireless, IoT
The Taoglas Accura GVLB258.A, is a passive, dual-band GNSS L1/L5, high-performance antenna for high precision GNSS accuracy and fast positioning.

Read more...
What is Wi-Fi HaLow and why choose it for IoT?
iCorp Technologies Editor's Choice Telecoms, Datacoms, Wireless, IoT
Wi-Fi HaLow introduces a low power connectivity option that, in contrast to other Wi-Fi options, offers greater range of approximately 1 km, which opens up a raft of IoT use cases.

Read more...
Wi-Fi 6 and Bluetooth LE coprocessor module
Altron Arrow Telecoms, Datacoms, Wireless, IoT
The ST67W611M1 from STMicroelectronics boasts an all-in-one design which, together with its capabilities, contribute to making it an attractive choice for IoT edge devices requiring a single-chip solution.

Read more...
Futureproofing IoT connectivity
SIMcontrol Telecoms, Datacoms, Wireless, IoT
A managed private APN assigns every device to an isolated carrier slice, producing a single ingress to the enterprise network, with traffic bypassing shared internet paths and reducing exposure.

Read more...
Extra slim 2,4 GHz radio module
Telecoms, Datacoms, Wireless, IoT
The Thyone I radio module from Würth Elektronik now has a little sibling: Thyone-e, which takes up 30% less space and represents a cost-effective alternative for applications in which the long-range mode is not required.

Read more...
Wi-Fi 6 plus Bluetooth LE SoC
Altron Arrow Telecoms, Datacoms, Wireless, IoT
Silicon Labs’ SiWx917M SoC is the company’s lowest power Wi-Fi 6 SoC, ideal for ultra-low power IoT wireless devices using Wi-Fi, Bluetooth, Matter, and IP networking for secure cloud connectivity.

Read more...
Two Bluetooth protocols – one module
Telecoms, Datacoms, Wireless, IoT
Würth Elektronik has introduced its Skoll-I, a compact wireless module that combines both Bluetooth Classic and Bluetooth Low Energy version 5.4 into a single solution.

Read more...
Compact high-performance antennas
Electrocomp Telecoms, Datacoms, Wireless, IoT
KYOCERA AVX offers a variety of extremely compact and high-performance internal, on-board, multiprotocol 2,4 GHz antennas ideal for use in SiP applications.

Read more...









While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved