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@vitelcom.net> wrote:
From: Herb Schoenbohm <herbs@vitelcom.net>
Subject: Re: Topband: Home Depot LED bulb interference.
To: topband@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@bresnan.net> wrote:
From: Wayne Mills<n7ng@bresnan.net>
Subject: RE: Topband: Home Depot LED bulb interference.
To: "'Jim F.'"<j_fitton@yahoo.com>, "'top Band'"<topband@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@contesting.com
[mailto:topband-bounces@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
_______________________________________________
_______________________________________________
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
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
|