9 novembre 2024, 16:33
ENAMS 2.0 available for pre-orders
Nov 8, 2024 - HF, Spectrum - Sylvain, F4GKR
What is ENAMS ?
ENAMS stands for Electrical Noise Area Measurement System. It is a network of receivers that automatically measures and records the background noise level in the radio frequency spectrum from 66 kHz to 31 MHz. This data is used to track the increasing levels of radio frequency interference and its impact on radio communication, particularly shortwave broadcasting and amateur radio.
Why was ENAMS created?
ENAMS was initiated by the German Amateur Radio Club (DARC) in response to the growing concern over rising noise levels in the shortwave bands. The lack of reliable and up-to-date interference measurements highlighted the need for a system like ENAMS to document and analyze the problem.
How does ENAMS work?
ENAMS utilizes Red Pitaya SDR receivers equipped with preamplifiers to cover the entire frequency range from 66 kHz to 31 MHz. These receivers are strategically located and measure the RF spectrum every ten minutes, recording both RMS and peak noise levels. The data is then collected and processed to generate statistical information and visualizations of the noise levels across different locations.
What are the key features of ENAMS 2.0?
ENAMS 2.0 is an improved version of the original system with several enhanced features:
Local Data Storage: ENAMS 2.0 receivers can store up to 5 years of raw and calibrated data locally on a 256 GB disk. This allows for offline operation and easier relocation of the stations.
I/Q Data Retrieval: ENAMS 2.0 stores I/Q data from recent measurements, allowing for retrieval and further analysis.
Increased Computing Power: An additional Raspberry Pi provides more processing power for handling the increased data storage and processing requirements.
Enhanced Reliability: The system has been designed for continuous 24⁄7 operation with improved reliability.
Offline Operation: ENAMS 2.0 units can operate without a continuous internet connection. They only need to connect periodically to upload data.
Why is ENAMS 2.0 important for the amateur radio community?
ENAMS 2.0 provides crucial data that can be used to advocate for better protection of amateur radio frequencies. The statistically sound information gathered by the system demonstrates the inadequacy of previous ITU noise measurements in today’s environment, where cumulative noise from various sources is significantly impacting radio communication.
How can I contribute to the ENAMS project?
The IARU R1, in collaboration with DARC and the ENAMS team, is planning to make a second batch of ENAMS 2.0 units available by late 2024. Amateur radio operators and organizations can contribute by:
Purchasing an ENAMS 2.0 Unit: If you are interested in supporting the project and hosting an ENAMS 2.0 receiver, you can pre-order a unit from the DARC here https://darcverlag.de/ENAMS-20
Spreading Awareness: Raising awareness about the ENAMS project within your local amateur radio community and encouraging participation.
Where can I find more information about ENAMS?
More information, including technical details, data visualizations, and the latest updates on the ENAMS project, can be found on the ENAMS website: http://www.enams.de.
Preorder your unit here : https://darcverlag.de/ENAMS-20
What is ENAMS ?
ENAMS stands for Electrical Noise Area Measurement System. It is a network of receivers that automatically measures and records the background noise level in the radio frequency spectrum from 66 kHz to 31 MHz. This data is used to track the increasing levels of radio frequency interference and its impact on radio communication, particularly shortwave broadcasting and amateur radio.
Why was ENAMS created?
ENAMS was initiated by the German Amateur Radio Club (DARC) in response to the growing concern over rising noise levels in the shortwave bands. The lack of reliable and up-to-date interference measurements highlighted the need for a system like ENAMS to document and analyze the problem.
How does ENAMS work?
ENAMS utilizes Red Pitaya SDR receivers equipped with preamplifiers to cover the entire frequency range from 66 kHz to 31 MHz. These receivers are strategically located and measure the RF spectrum every ten minutes, recording both RMS and peak noise levels. The data is then collected and processed to generate statistical information and visualizations of the noise levels across different locations.
What are the key features of ENAMS 2.0?
ENAMS 2.0 is an improved version of the original system with several enhanced features:
Local Data Storage: ENAMS 2.0 receivers can store up to 5 years of raw and calibrated data locally on a 256 GB disk. This allows for offline operation and easier relocation of the stations.
I/Q Data Retrieval: ENAMS 2.0 stores I/Q data from recent measurements, allowing for retrieval and further analysis.
Increased Computing Power: An additional Raspberry Pi provides more processing power for handling the increased data storage and processing requirements.
Enhanced Reliability: The system has been designed for continuous 24⁄7 operation with improved reliability.
Offline Operation: ENAMS 2.0 units can operate without a continuous internet connection. They only need to connect periodically to upload data.
Why is ENAMS 2.0 important for the amateur radio community?
ENAMS 2.0 provides crucial data that can be used to advocate for better protection of amateur radio frequencies. The statistically sound information gathered by the system demonstrates the inadequacy of previous ITU noise measurements in today’s environment, where cumulative noise from various sources is significantly impacting radio communication.
How can I contribute to the ENAMS project?
The IARU R1, in collaboration with DARC and the ENAMS team, is planning to make a second batch of ENAMS 2.0 units available by late 2024. Amateur radio operators and organizations can contribute by:
Purchasing an ENAMS 2.0 Unit: If you are interested in supporting the project and hosting an ENAMS 2.0 receiver, you can pre-order a unit from the DARC here https://darcverlag.de/ENAMS-20
Spreading Awareness: Raising awareness about the ENAMS project within your local amateur radio community and encouraging participation.
Where can I find more information about ENAMS?
More information, including technical details, data visualizations, and the latest updates on the ENAMS project, can be found on the ENAMS website: http://www.enams.de.
Preorder your unit here : https://darcverlag.de/ENAMS-20
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