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Old 10-11-2016, 07:14 PM   #11
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Join Date: Nov 2007
Location: Fayetteville, GA, USA
Posts: 3,017
Default RFI testing

Had some time this afternoon so more out of curiosity than concern I went out to the trailer to do some RFI testing of all the LEDs I have recently installed.

Starting with all the LEDs off I monitored the VHF/UHF amateur bands with the Kenwood V7A that lives in the trailer permanently. I opened the squelch on both bands and turned on all the LEDs. I did not notice a perceptible rise in background noise. A local repeater gave its voice ID and sounded just fine.

So I moved on to the Concertone AM/FM/WX radio.

I started the test of each band with all LEDs off and then turned them all on. Again, no rise in noise. I listened to weak stations and empty channels. No appreciable noise that I thought I could blame on the LEDs.

And then finally the off-air TV. No problems. Even with all 10 remaining $1.50 Chinese E-bay LEDs lit, no detectable RFI.

I didn't test amateur HF radio as it was just too much trouble to drag the TS-570 out to the trailer and set all that up. Maybe next time we go camping. But I don't think there will be an issue.
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KU4OJ "Wade" Ships Captain, CFO, Chief Engineer
KG4DQQ "Kathy" 1st Officer, Navigator, Best Friend
2007 F-150 SuperCab - 2009 Rockwood 8280SS
Lot's of mostly Kenwood stuff

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