[Elecraft] Help with noise on 40m

[Don Wilhelm]

Zac,

The dimmer switches can be 'fixed' - remove them, place on a solid 
surface and swing at them full force with a hammer :-) .  Replacement 
with regular light switches will cure their noise.  If the CF advocates 
have their way, you will have to get rid of them anyway, the CF lamps 
that I have encountered do not work with dimmers.

Seriously, I do believe replacement of those particular dimmers is in 
order.  I have three in the house that do not make apparent RF noise 
(but then the antennas are 100 feet away too, which helps).  The ones I 
have use a slider next to the switch, so they can be turned completely 
off.  In the past, I have had trouble with ones which have only a slider 
or knob for both the 'OFF' position and the adjustment - they never turn 
completely off.

73,
Don W3FPR

Zac Brown wrote:
> After shutting off the circuits in my house, it appears that most of the noise is coming from two dimmer switches and a switching power supply.
> The dimmer switches are for lighting and I'm not sure what the power supply is for.  It's plugged into an outlet in my closet and is screwed to the wall.
>