Topband: Home Depot LED bulb interference.

[Jim F.]

The Home Depot $9.99 lamps do not emit a lot of radiation but cause
noise when located near my FM and 160m radios.
 
And the large heatsink located above the base gets quite hot to the touch. 
 
I bought a new LED lamp in original packing,  and had it delivered to
 Ed Hare (RFI guru) at ARRL headquarters as an inexpensive ($10)  
white noise generator, but have heard nothing back yet.  
 
73,
 
jim / W1FMR
 
 
 


--- On Thu, 4/5/12, Herb Schoenbohm <herbs at vitelcom.net> wrote:


From: Herb Schoenbohm <herbs at vitelcom.net>
Subject: Re: Topband: Home Depot LED bulb interference.
To: topband at contesting.com
Date: Thursday, April 5, 2012, 5:16 PM


I just don't understand physics it seems....as how can there be that 
much energy savings if so much heat is produced and must be dissipated?  
Here in the VI when the power company increased the rates to over $40 
per KWH everyone bought the cheap CFL bulbs after the energy office made 
a big promotion on radio and TV about how much money would be saved in 
the process.  Well there was less consumption and people bills were 
slightly lower with this and other energy saving moves like turning of 
the electric water heater, going to gas stoves, and unplugging the 
freezer part of the day.  OK fine but when the power company noticed a 
reduction on accounts receivables, and found it difficult to make bond 
payment on debt service...guess what?  They just increased the per KWH 
charge to about 50 cents per KWH!

So whats the point in saving a few watts anyway if these LED beasties 
cause RFI?  in fact i like the old incandescent bulbs that haven't 
changed much since Thomas Edison and others in UK and Russia invented 
them.  plus i like the fact that when I key my rig on TB the outside 
lights at night go off and on.  (Just kidding of course)


Herb, KV4FZ

Wayne.. Good info...Thanks....

Hmmm..  the heatsink base of this 40 watt bulb also gets too hot to touch
and feels like more than 40 watts also.



--- On Thu, 4/5/12, Wayne Mills<n7ng at bresnan.net>  wrote:


From: Wayne Mills<n7ng at bresnan.net>
Subject: RE: Topband: Home Depot LED bulb interference.
To: "'Jim F.'"<j_fitton at yahoo.com>, "'top Band'"<topband at contesting.com>
Date: Thursday, April 5, 2012, 12:32 PM


FWIW: for the last six weeks, I've been experimenting with three LED
lamps,
40, 60 and 75 watts, Sylvania and UtilitechPro from Lowes and so far
haven't
noticed anything on Topband. I even disconnected the shield on the RX
input
this morning and still don't hear anything.

Wayne, N7NG

p.s. That 75 watt equivalent lamp seems to put out MORE than 60 watts of
heat. It really gets hot.

-----Original Message-----
From: topband-bounces at contesting.com
[mailto:topband-bounces at contesting.com]
On Behalf Of Jim F.
Sent: Thursday, April 05, 2012 9:22 AM
To: top Band
Subject: Topband: Home Depot LED bulb interference.







I bought two  LED  40 watt equivalent 110V. light bulbs from Home Depot
that
use
only 9 watts of power, for $9.99 ea.

They seemed like a good deal but cause noise interference on 160m and the
FM
radio band.
(I did not try other bands.)

I like the bulbs but best use them away from your radio station and have
someone turn them off and on while monitoring your favorite
frequencies/bands.

73,

jim / W1FMR
_______________________________________________
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UR RST IS ... ... ..9 QSB QSB - hw? BK


_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK

>
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK

_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK