3 ms·
There are serious RF interference problems with some LED, CFL lights and dimmer products. Even low power (5W) lights can swamp the spectrum badly enough to jam
by topspin 8y ago
There are serious RF interference problems with some LED, CFL lights and dimmer products. Even low power (5W) lights can swamp the spectrum badly enough to jam out DAB and FM radio receivers.
[1] http://www.ledbenchmark.com/faq/LED-interference-issues.html http://www.ledbenchmark.com/faq/LED-interference-issues.html
- xxpor 8y agoI wish the FCC would crack down. These devices are in violation of Part 15.
- tzs 8y agoAlso from some monitors and TVs. My Samsung monitor spews all across the 1.25 meter ham band. The form of the interference is a serious of regularly spaced narrow spikes across the whole band.
- topspin 8y agoYou might try adding snap-on ferrite beads to the power cord. If the monitor has an external switching power supply you could try replacing it; some of those are noisy. Otherwise, if it's an older monitor, the noise is probably coming from the CCFL power inverter (an internal AC power supply that powers the fluorescent backlight.) New monitors usually use LED backlighting.
- oh_sigh 8y agoYes, I just installed new LED headlights in my car[0], and my FM radio gets staticy when I turn them on. [0] https://www.amazon.com/gp/product/B07D3H1HWL https://www.amazon.com/gp/product/B07D3H1HWL
- topspin 8y agoThere is a lot of information available about this problem and how to solve it. Read this for starters [1]. The cause is the LED "driver" (power supply) and power cables; the PWM supply is making your LED power cables radiate RF energy. [1] https://betterautomotivelighting.com/2014/12/31/how-to-remove-radio-interference-using-ferrite-coils-for-hid-and-led-headlights/ https://betterautomotivelighting.com/2014/12/31/how-to-remov...