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Circuit Design, Inc.
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Circuit Design GmbH
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Adiv Techno Services Inc.
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Telelink Communications
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http://www.telelink.com.au/
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Saelig Company, Inc.
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Austria
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Circuit Design GmbH
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Reimesch Kommunikationssysteme GmbH
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IDVISION bvba
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MICRORISC s.r.o.
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Acal BFi Nordic AB (Denmark)
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Acal BFi Nordic AB (Finland)
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Taiel Electronique
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Circuit Design GmbH
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FQ Ingenieria Electronica
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Low Power Radio Solutions Ltd.
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CIRCUIT DESIGN,INC. Radio module manufacturer
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Serial Data Transmission
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ON/OFF Transmission
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Audio Transmission
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Learn More
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Learn More
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Learn More
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LMD-401 High performance channel programmable transceiver
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/products/lmd-401/
MU-4 Embedded radio modem
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/products/mu-4/
NK-2.4Y 2.4 GHz telecommand module
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/products/nk-2-4y/
WA-TX-03S / WA-RX-03S Multi channel wireless audio transmitter and receiver (15 ch)
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/products/wa-txrx-03s/
CDP series
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STD series
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MU / SLR series
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CDT / NK series
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WA series
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EN
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ARIB
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419 MHz
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426 MHz
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429 MHz
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434 MHz
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447 MHz
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458 MHz
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458-462.5 MHz
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808 MHz
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863-865MHz
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869MHz
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915MHz
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2.4GHz
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Remote monitoring using long range wireless communication – System for monitoring sewage manhole pump MU-3-429, MU-2-429In the case where problems occur in infrastructure essential to daily living such as the sewage system’s water level or pump, a swift response is required. The ICT sewage monitoring system that uses low power radio makes this possible. By using long range wireless communication for monitoring, it is possible to identify the source of the problem as soon as it occurs. This allows the sewage system to be operated and maintained safely.
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https://www.cdt21.com/case/remote-monitoring-manhole-pump/
KANTARO system to detect ground slope collapse – transmitting the sensor data by wireless MU-2-429Gradual shifts in tilt can occur in natural or artificial ground slopes due to factors such as looseness and slipperage. The KANTARO was developed for capturing such shifts.Measurements from the tilt sensor driven into the ground slope are taken at regular intervals. Changes in the tilt and the speed of change are determined and the level of risk evaluated. The data from the tilt sensor and information that could indicate imminent ground collapse can be transmitted quickly by radio making this useful in disaster prevention.
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https://www.cdt21.com/case/slope-failur-monitoring-system/
RF modem using LoRa® in the 429 MHz band: Machine monitoring system SLR-429MThe system is capable of obtaining information about various machines in the factory while forwarding it to a central management system in order to visualise their status and in realtime. Collected data can be exported to CSV file and if a machine stops for any reason, it is possible to notify by email to the operator automatically. By using the long range SLR-429M LoRa modem operating in the 429 MHz band for machine monitoring, large scale cable installation for communication is not required. Such IoT system can be introduced in a short time and at low cost.
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https://www.cdt21.com/case/using-lora-machine-monitoring-system/
Even in areas with no access to a power supply, the solar powered radio warning system ensures complete safety management in dangerous construction areas such as disaster prone areas and erosion control works. CDT-TX-02M, CDT-RX-02M, WT-01The construction area on the river and the general mountainous area around it carry a high risk of mudflow and landslides. While keeping construction workers safe, for the local residents in the area an emergency warning system that can immediately supply a warning is used.
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Learn More
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German Website renewal
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https://www.cdt21.com/news/website-renewal-2/
New article added on RF Design Guide Page, “Digital modulation”
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Publication of the case study, “The Solar Powered Warning System”.
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New articles added on RF Design Guide Page, “Impedance and Standing wave ratio” and “Analogue modulation”
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https://www.cdt21.com/news/new-articles-added-20201207/
New articles added on RF Design Guide Page, “Radio waves and the EM spectrum” and “How antennas radiate?”
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https://www.cdt21.com/news/new-articles-added20201109/
RF measurement tools; VSWR checker
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https://www.cdt21.com/news/vswr-multi-test-device-vswr-checker/
See Back Numbers
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Wave propagation calculation tool (for free-space and 2 wave model)
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https://www.cdt21.com/technical_tools/wave-propagation-calculation-tool
Fresnel zone calculation tool
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Okumura-Hata curve calculation tool
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Creating a channel plan in order to avoid third-order intermodulation interference and the near-far problem tool
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Height pattern calculation calculation tool
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Mutual conversion of decibel value and true value
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Learn More
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[ Video ] [ SLR-434M ] – Introducing the evaluation software for the low power RF modem, SLR-434M
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https://www.cdt21.com/technical_blog/evaluation-program-slr434m/
[ Video ] [ CDP-TX-07MP, CDP-RX-07MP ] – Showing how to customise the channel table in the transmitter and receiver CDP-TX-07MP, CDP-RX-07MP using Windows setting program.
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[ Video ] [ SLR-434M ] – Demonstrating serial data communication with the low power RF modem SLR-434M.
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[ Video ] [ SLR-434M ] – Demonstrating the embedded radio modem SLR-434M: Development Kit
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Telecommand
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Audio Modules
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