Many thanks to SWLing Post contributor, Alexender (DL4NO), who shares the following comment in response to our recent post about LED bulb QRM:
The DARC does even more: It is planning a long-term project with some 50 automatic monitoring stations with standardized, calibrated antennas and according to standardized methods to document the changes.
Every monitoring station will scan the bands for free frequencies and measure the background noise there. Every 15 min it will send its findings to a central database where the data will be collected and evaluated.
This way the DARC wants to document the ever increasing interferences in a way that is valid according to the relevant standards. Most monitoring stations are planned to be placed at fixed locations all over Germany. But a few are planned to be placed for a limited time in especially interesting locations.
Presently relevant findings are collected. If you live in Germany see https://www.darc.de/der-club/referate/emv/emv-abhilfemassnahmen/. Also see the DARC magazine cqDL 12-2017, p. 15.
To emphasize it again: Informal reports to your radio club are good. But if you wish to communicate with the legislative bodies you must do your measurements according to the standardized rules using calibrated equipment. Otherwise the authorities will not accept your findings.
Most impressive, Alexander! I love the fact that DARC is using objective observations to support their initiative. The concept is a fascinating one that I should hope other national radio clubs could copy. I will certainly send this to the ARRL.
Thanks again, Alexander!
(Source: Southgate ARC via Mike Hansgen)
LED Bulb RF Pollution – Elektor Magazine investigates
DARC, the German national amateur radio society, are requesting amateurs to send LED bulbs which pollute the RF spectrum to the magazine Elektor for investigation
A Google English translation reads:
Elektor-Verlag GmbH calls all readers and especially all radio amateurs to send non-compliant LED bulbs including power supplies. Elektor wants to investigate this EMC-technical and then forward it to the competent market surveillance of the BNetzA.
The reason for the action: As a result of a press release of the DARC in September 2017 on the significantly increasing interference of radio communications, other radio services and the DAB reception by non-EMC compliant LED bulbs Elektor had investigated such lamps (as well as LED strips). The result showed a progressive electromagnetic pollution.
The Federal Network Agency as competent authority for market surveillance in accordance with the EMVG has welcomed the call for the submission of suspicious copies. In addition, the Federal Agency would like to be informed if disturbing lamps attract attention. She then wants to investigate this situation and take the products out of the market, if they are still offered.
Please send suspicious copies
Please enclose a note with the words “EMC LED lamp” so that everything runs correctly in the inbox. You can also announce your submission via e-mail to email@example.com with the subject “EMC-LED-Lamp”. Elektor Verlag GmbH then checks the lamp, publishes an update if necessary and informs the Federal Network Agency.
Here the link to the Elektor article from 23.04.2018
Source DARC http://darc.de/
2017 RF pollution from LED bulbs in Elektor Magazine
(Source: Southgate ARC via Thomas Ally)
Cambridge 105 goes pirate – including on 6,070 kHz – for Good Friday
Community broadcast radio station Cambridge 105 is throwing away the modern technology and returning to the era of pirate radio for Good Friday.
Setting up turntables and cart machines on the Riverboat Georgina on the River Cam, we’ll be broadcasting from 10am to 10pm, covering everything from the early days of offshore radio in the 1960s to the end of the era in the early ’90s.
We’ve also teamed up with the DARC-run Channel 292 shortwave transmitter on 6070kHz for the day, so SWLs should be able to hear us there across much of Europe.
Dom M0BLF will be handling QSL cards for anyone who does hear us on HF.
Cambridge 105 is run entirely by volunteers, including a good number of licensed amateurs, both on the engineering and presentation side of the station.