[GreenKeys] Off Topic: Curly-Q light bulbs

Sun Jun 10 10:29:50 EDT 2018

Very interesting.

Two things:

o I use the (I can't think of the name - too early
   and not enough coffee) bulbs made for environments
   that have vibration - like garage door motor units.

o If we can come up with a way for them to interfere
   with satellite and cable TV, the problem will be
   remedied in a matter of minutes...

Hey, - now that I think about it, who's heard the latest
on broadband power lines? It was "a thing" a few years ago
but I don't think there's been anything in QST about it.

UE,
K2EAA - TONY
NNNN
ZCZC

On 06/10/2018 07:08 AM, Ralph Irish wrote:
> *I installed two 60W equivalent LED bulbs in my Garage Door Opener last
> year.  In a few seconds, the usefulness of the*
> *remote opener was gone.  I would go into the garage, hit the wall
> button to open the door.  I would get into the car and
> *
> *start up, buckle up and (try) to close the door with the remote.
> NOTHING!
> *
> **
> *I took the remote into the garage, clicking the 'Operate' button every
> few steps.  It was not until I got the remote less
> *
> *than 1 foot from the antenna on the device would respond.
> *
> **
> *The attached image shows one of the offending bulbs.  They were
> purchased from a national chain of stores, with the
> *
> *words "Depot" and "Home" in their name.  Note the plastic sleeve
> between the threaded metal base and the glass
> *
> *globe.  THAT part of the device gets very  HOT  after a few minutes of
> operation.  I'm guessing that there is a lot of
> *
> *electronics in there that produce the heat.  The glass bulb is only
> slightly warm.
> *
> **
> *I replaced the two bulbs with older, less light output LED bulbs.  The
> opener now works from over 100 feet away, as it
> *
> *did before the 'event'. *
> **
> *I've not done a lot of shopping for LED bulbs, so I don't know if this
> 'design type' is common or not.  If you can find
> *
> *suitable LED bulbs with an 'all glass' bulb, they might not be "RF
> Generators."  Don't buy in quantities unless you know*
> *they can be returned, if they cause RF problems.*
> *
> *
> *Installing this type in your home might make radio operating difficult,
> if not impossible.  I've done  NO  TESTING  of
> *
> *the freq. range of these 'offenders'.  I just know that they disrupt my
> Garage Door Opener.  It might be just 'narrow
> *
> *band' radiation, or it might be wide band and random, depending on what
> the manufacturer could purchase in large
> *
> *quantities for production.
> *
> *
> *
> *Time for the FCC to step in?
> *
> *
> *
> *73,
> *
> *
> *
> *Ralph - W8ROI
> *
> **
> *-    -    -    -*
> **
> *
> *
>
> ------------------------------------------------------------------------
> *From: *"Steve Garrison" <steve.n4tty at gmail.com>
> *To: *"Jim Haynes" <jhhaynes at earthlink.net>
> *Cc: *greenkeys at mailman.qth.net, "tony podrasky" <tony.podrasky at gmail.com>
> *Sent: *Sunday, June 10, 2018 7:43:37 AM
> *Subject: *Re: [GreenKeys] Off Topic: Curly-Q light bulbs
>
> That is a concern!
>
> Our radio club has a 2 meter repeater on top of Stone Mountain (since
> 1969) and every year the Park creates a "Christmas Tree" with strands of
> lights running from near the top to the ground all around the radio
> tower on the mountain top.  Around 1350 bulbs in the display makes for a
> quite impress tree for miles.  About 3 years ago they changed to LED
> bulbs the purchased from Home Depot.
>
> Wow, did out repeater coverage suffer!  But working with the park we
> were able to show them proof of the LED issue in regards to RFI.  And we
> worked out a temporary work around with them for the nearly two months
> the "Christmas Tree" is lit up (24 hours a day). They even wrote a
> letter to the FCC explaining the results of our study and how the two of
> us had worked out a yearly solution.
>
> And LED street lights were installed in my neighborhood about a year ago
> (one of the is at the end of my drive way) and I see no difference on
> the spectrum display of my FlexRadio when the street lights come on.
>   Sure can't say that about the fluorescent light in the laundry room
> right outside my ham shack!
>
> Steve G./N4TTY
> Sent from my iPhone
>
>  > On Jun 9, 2018, at 4:28 PM, Jim Haynes <jhhaynes at earthlink.net> wrote:
>  >
>  > Any info about RFI generation?  Important to us radio guys.
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