tag:blogger.com,1999:blog-3380839830287420877.post5510254650063099911..comments2024-03-26T07:29:36.610-07:00Comments on VE7SL - Steve - Amateur Radio Blog: An RF-Quiet LED 'Fluorescent' BulbSteve McDonaldhttp://www.blogger.com/profile/06229640265009249231noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-3380839830287420877.post-60645476306684222042021-04-12T15:40:04.865-07:002021-04-12T15:40:04.865-07:00When you're looking for rf pollution from LED ...When you're looking for rf pollution from LED systems, make sure you check more than HF. You'd better look from LF-UHF. I've seen "crawlers" running through sdr waterfalls from LED replacement 60 w bulb lamps on 2200m and also LED's are notorious for VHF pollution. Like Dave did... back to incandescents... if you can still find them. I guess it's theoretically possible to find some that don't pollute from LF-UHF, but it's a crapshoot.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3380839830287420877.post-7537416385801442832021-04-12T01:38:10.276-07:002021-04-12T01:38:10.276-07:00Interesting post. Except for outdoor LED ('se...Interesting post. Except for outdoor LED ('security') lights, I have not seen any RFI from LED products of a fair few varieties by now. And I am very strict with the RF conditions at home; I'm a fairly serious WSPRer! <br /><br />The odd thing is that we don't see articles like your post on the 'mainstream' ham press. I've asked repeatedly for a database of RFI-quiet products to be listed by national societies, etc. But this seems to be like asking for a lift to Mars by 2pm. I never understood why...Photonhttps://www.blogger.com/profile/10137649851898638015noreply@blogger.comtag:blogger.com,1999:blog-3380839830287420877.post-91830164025542299652021-04-11T15:03:00.844-07:002021-04-11T15:03:00.844-07:00Some light electronics definitely can produce enou...Some light electronics definitely can produce enough RF noise to cause problems! I recently replaced a CFL bulb in my garage door opener with a NEW OUT OF the BOX FEIT Electric LED bulb, 800Lu Soft white. The next day I noticed we were having problems getting the door to open with any of the remote openers. My first thought was - well it's time to change the batteries. Well that didn't change a thing. Good thing I am a HAM and think about things RF, others might have thought the opener electronics went bad. My next thought was what did I change? I first removed the culprit bulb and everything started working again, great. I tried several different bulbs before deciding to use an incandescent bulb from way back in the closet. Davehttps://www.blogger.com/profile/06363685287529011526noreply@blogger.com