In article ,
dave wrote:

Bushcraftgregg wrote:
On Mar 6, 8:20 pm, Telamon
wrote:
In article ,





dave wrote:
Telamon wrote:
In article ,
"McFerg" wrote:
These new energy efficient household bulbs really cause a lot
interference on my medium wave and the lower short wave bands.
Is there anything I can do to eliminate it, short of switching
back to the old filament type
No easy way. You are better off with the incandescent bulbs as
those screw type florescence are a mercury hazard and depending
on the instillation they will not last long. The best use for
the energy efficient bulbs are ones that are not switched on/off
often and are mounted upright. That eliminates most uses. A
better system would be low voltage quartz or LED type lighting
but that takes rewiring the house.
Incandescent bulbs release way more mercury than the occasional
broken CFL.
You will have to explain that one.

Most electricity is produced by burning coal, which contains mercury.
There is mercury in the smokestack emissions from coal plants. The
extra mercury released by the power plant in the lifetime of an Edison
lamp is more than that spilled by a broken CFL. Simply a matter of
arithmetic.

That's sounds like environmental BS arithmetic like the man made global
warming BS. I don't want a broken bulb with mercury in it in my house
and that doesn't take any BS arithmetic.

I turn mine on and off just like any other lamp; no ill effects.
If you use them upside down in any ceiling fixture you will shorten the
life of the bulb.

That's a heat thing. You can use them ballast up, but you have to
ensure adequate ventilation of the ballast.

I posted that already. The electronics up will be hotter than down and
this shortens the life of the bulbs as people are finding out.

I use them vertically, horizontally, and at various angles
in-between. Again, no ill effects.
If you are turning them on and off all the time you will shorten
the life of the bulb.

You're turn for a scientific explanation.

I already explained this. Your longest life will occur with the bulb
pointed up, which is contrary to ceiling mount bulbs. You will have
longer life in a standard table lamp.

There are LED lamps that run on 110 VAC.
Those have switching power supplies that should be avoided.

Modern switch-mode power supplies are usually carefully tailored to
the load and any RF emission is minimized; not just for Part 15, but
because it is less efficient to waste power making radio waves.

Only some of the more expensive brands have done this. Other brands
(most) made in China haven't bothered.

I would only buy these bulbs by manufacturers that guarantee the spectra
of the bulbs. Some of these bulbs put out more UV than they are supposed
to, which can cause cancer.

--
Telamon
Ventura, California