[Elecraft] Help with noise on 40m

[Leigh L Klotz, Jr.]

They probably aren't really off.  You might wanr to take this to RFI 
list (contesting.com), but some report particular brands of Lutron 
dimmers are quiet(er).  You might be able to justify (to a landlord or 
other financial approver) replacing them on an energy basis.
73,
Leigh/WA5ZNU
On Fri, 7 Sep 2007 11:33 am, Zac Brown wrote:
> After looking into this further - the noise is still there even with 
> the dimmer switches turned off (circuit is on).  Is this normal?
>
> Thanks,
>
> Zac
> KD5IEF
> K2 4907
>
> On Friday, September 07, 2007, at 09:50AM, "Dave Van Wallaghen" 
> <w8fgu at comcast.net> wrote:
>> Hey Zac,
>>
>> That sounds very similar to what my plasma TV emits. I have my window 
>> line
>> running along the outside wall where the TV is mounted and when it is 
>> on, I
>> can hear it very plainly. The tone fluctuates with changes with the 
>> picture.
>> I've also noticed that it peaks at certain frequencies as well.
>>
>> I was able to detect it as well when operating portable in my yard 100 
>> ft
>> away with a separate antenna in a tree. So I know it's not just in the 
>> power
>> line. It is considerably attenuated out there - but there none the 
>> less.
>>
>> BTW - I have a 50" Panasonic Plasma - beautiful picture and a great RF
>> generator.
>>
>> 73,
>> Dave W8FGU
>>
>>>  -----Original Message-----
>>>  From: elecraft-bounces at mailman.qth.net [mailto:elecraft-
>>>  bounces at mailman.qth.net] On Behalf Of Zac Brown
>>>  Sent: Thursday, September 06, 2007 11:48 PM
>>>  To: Elecraft reflector
>>>  Subject: [Elecraft] Help with noise on 40m
>>>
>>>  I made a few recordings of some noise that I hear on 40m tonight. The
>>>  .wav files can be downloaded at the address below. I have no idea 
>>> what's
>>>  causing this noise, or how to filter it out. Is this the type of noise
>>>  that the KDSP2 or KNB2 could remove?
>>>
>>>  Thanks,
>>>
>>>  Zac
>>>  KD5IEF
>>>
>>>  http://homepage.mac.com/zac_brown/FileSharing44.html
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>>
>>
>>
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