Anatomy of a Philips LED Light

So, what’s inside one of these lights that has the potential to create so much HF interference?   We opened up a common Philips 10W lamp with an angle grinder to see what makes it tick.   There are fourteen LEDs wired in series, with a likely working voltage of around 35V.  However, the actual voltage […]

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LED Lights – Test Results

Some of the most common RF noisy products around the house are LED downlights.  We have had reports of banks of LED lights (60+ lights) causing QRM for HF radio at distances of up to 400 metres.   Plenty of retailers sell LED lights of various brands, but it is almost impossible to tell if these […]

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About RASA Product Review

RASA RF INTERFERENCE PRODUCT REVIEWS One of the new challenges to Amateur Radio is being able to deal with electrical noise that comes from domestic light fittings and electrical appliances. Sometimes the interference comes from neighbours and sometimes from our own equipment.  It is very difficult to purchase domestic appliances and be sure that they […]

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