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OT: Oh the lovely noise

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Thom Durfee

OT: Oh the lovely noise

Just hooked up my Ten-Tec RX340D SDR to my 40 meter dipole.

from all the new CFL lightbulbs in my neighborhood I get more than S9
+40db of noise.

looks like no ham radio at home.

maybe I will have better luck at my daughters 75 miles away.

73

Thom WI8W

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Bob K6UJ

Re: OT: Oh the lovely noise

Dont give up in despair Thom ! It may not be as bad as you think.
If you can run the Ten Tec off of a 12v battery, turn off the main breaker to your home
and see if it is still there. If it goes away, then one by one turn on each breaker to see which
circuit has the offender, then check everything on that circuit. That seems pretty strong
to me and sounds like what I have experienced in the past at my place. One time it turned
out to be a DirecTV receiver, which power supply runs all the time even when it is off. It was
very strong like what you have. Another time it was a Makita battery charger for a portable drill.

73,
Bob
K6UJ

On Nov 18, 2012, at 9:32 AM, Thom Durfee wrote:

> Just hooked up my Ten-Tec RX340D SDR to my 40 meter dipole.
>
> from all the new CFL lightbulbs in my neighborhood I get more than S9
> +40db of noise.
>
> looks like no ham radio at home.
>
> maybe I will have better luck at my daughters 75 miles away.
>
> 73
>
> Thom WI8W
>
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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ke9uw

Re: OT: Oh the lovely noise

In reply to this post by Thom Durfee

Seems unlikely. I have a number of these bulbs in my home and see nothing like that. There is some noise from these but manageable. Look further for your sources of noise.

Sent from my iPad
Chuck, KE9UW
(Jack for BMW motorcycles)

On Nov 18, 2012, at 11:33 AM, "Thom Durfee" <[hidden email]> wrote:

Chuck, KE9UW

Mike B-12

Re: OT: Oh the lovely noise

Agreed. I've been using an increasing number of CFLs since the mid-90s, and
despite testing, I've never really had a problem with them. Not to say there
aren't some brands out there that truthfully started the stereotype, but I
haven't found them. OTOH, there was a plasma TV in a work rental house in
Hawaii one time, that obliterated everything on HF.

73,

Mike, KW1ND

On 11/18/2012 01:02 PM, hawley, charles j jr wrote:

> Seems unlikely. I have a number of these bulbs in my home and see nothing like that. There is some noise from these but manageable. Look further for your sources of noise.
>
> Sent from my iPad
> Chuck, KE9UW
> (Jack for BMW motorcycles)
>
> On Nov 18, 2012, at 11:33 AM, "Thom Durfee" <[hidden email]> wrote:
>
>> Just hooked up my Ten-Tec RX340D SDR to my 40 meter dipole.
>>
>> from all the new CFL lightbulbs in my neighborhood I get more than S9
>> +40db of noise.
>>
>> looks like no ham radio at home.
>>
>> maybe I will have better luck at my daughters 75 miles away.
>>
>> 73
>>
>> Thom WI8W
>>
>>
>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
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>
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>

Stephen G4SJP

Re: OT: Oh the lovely noise

In reply to this post by ke9uw

I agree. I have a house full of CFLs and have had for many years. I don't
believe I have every come across a noisy one. Some of the LED lamps are
horrendous however.

73 Stephen G4SJP

On 18 November 2012 18:02, hawley, charles j jr <[hidden email]>wrote:

> Seems unlikely. I have a number of these bulbs in my home and see nothing
> like that. There is some noise from these but manageable. Look further for
> your sources of noise.
>
> Sent from my iPad
> Chuck, KE9UW
> (Jack for BMW motorcycles)
>
> On Nov 18, 2012, at 11:33 AM, "Thom Durfee" <[hidden email]> wrote:
>
> > Just hooked up my Ten-Tec RX340D SDR to my 40 meter dipole.
> >
> > from all the new CFL lightbulbs in my neighborhood I get more than S9
> > +40db of noise.
> >
> > looks like no ham radio at home.
> >
> > maybe I will have better luck at my daughters 75 miles away.
> >
> > 73
> >
> > Thom WI8W
> >
> >
> >
> >
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

David Gilbert

Re: OT: Oh the lovely noise

In reply to this post by Bob K6UJ

I find it difficult to believe that you'd be getting noise levels that
high from CFLs. I have several in my home (different brands ... nothing
special) and I haven't experienced anything being even close to that
extreme. If you're getting S9+40 QRN you should be able to pinpoint the
cause, and I doubt you will find it coming from a CFL.

Dave AB7E

>> Just hooked up my Ten-Tec RX340D SDR to my 40 meter dipole.
>>
>> from all the new CFL lightbulbs in my neighborhood I get more than S9
>> +40db of noise.
>>
>> looks like no ham radio at home.
>>
>> maybe I will have better luck at my daughters 75 miles away.
>>
>> 73
>>
>> Thom WI8W
>>
>>
>>

AJ8MH-Radio.Joe.Hutchens

Re: OT: Oh the lovely noise

In reply to this post by ke9uw

I use them and don't have any issues. Grow lamps are a different story. Anybody growing pot in your neighborhood? Bad news!

Sent from Pam's iPad...

On Nov 18, 2012, at 1:02 PM, "hawley, charles j jr" <[hidden email]> wrote:

N0AZZ

Re: OT: Oh the lovely noise

In reply to this post by ke9uw

I have 9 of them installed in my house with 2 in the shack and have none of
the problems your having. I would advise to look beyond for some other
problems yours seem quite bad.

73,
Fred/N0AZZ

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of hawley, charles j jr
Sent: Sunday, November 18, 2012 12:02 PM
To: Thom Durfee
Cc: [hidden email]
Subject: Re: [Elecraft] OT: Oh the lovely noise

Seems unlikely. I have a number of these bulbs in my home and see nothing
like that. There is some noise from these but manageable. Look further for
your sources of noise.

Sent from my iPad
Chuck, KE9UW
(Jack for BMW motorcycles)

On Nov 18, 2012, at 11:33 AM, "Thom Durfee" <[hidden email]> wrote:

> Just hooked up my Ten-Tec RX340D SDR to my 40 meter dipole.
>
> from all the new CFL lightbulbs in my neighborhood I get more than S9
> +40db of noise.
>
> looks like no ham radio at home.
>
> maybe I will have better luck at my daughters 75 miles away.
>
> 73
>
> Thom WI8W
>
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net Please help support this email
> list: http://www.qsl.net/donate.html

Mike Sanders

Re: OT: Oh the lovely noise

Yes, I have 33 in service including in the shack. No problems.
As Fred says your probably looking at a very local single signal
source. It can be tough but then again you might get lucky. How
about a close in plasma TV?? GL es 73

Mike Sanders
KOAZ

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]]On Behalf Of Fred Smith
Sent: Sunday, November 18, 2012 14:05 PM
To: 'hawley, charles j jr'; 'Thom Durfee'
Cc: [hidden email]
Subject: Re: [Elecraft] OT: Oh the lovely noise

I have 9 of them installed in my house with 2 in the shack and have none of
the problems your having. I would advise to look beyond for some other
problems yours seem quite bad.

73,
Fred/N0AZZ

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of hawley, charles j jr
Sent: Sunday, November 18, 2012 12:02 PM
To: Thom Durfee
Cc: [hidden email]
Subject: Re: [Elecraft] OT: Oh the lovely noise

Seems unlikely. I have a number of these bulbs in my home and see nothing
like that. There is some noise from these but manageable. Look further for
your sources of noise.

Sent from my iPad
Chuck, KE9UW
(Jack for BMW motorcycles)

On Nov 18, 2012, at 11:33 AM, "Thom Durfee" <[hidden email]> wrote:

> Just hooked up my Ten-Tec RX340D SDR to my 40 meter dipole.
>
> from all the new CFL lightbulbs in my neighborhood I get more than S9
> +40db of noise.
>
> looks like no ham radio at home.
>
> maybe I will have better luck at my daughters 75 miles away.
>
> 73
>
> Thom WI8W
>
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net Please help support this email
> list: http://www.qsl.net/donate.html

______________________________________________________________
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Post: mailto:[hidden email]

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Please help support this email list: http://www.qsl.net/donate.html

______________________________________________________________
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k6dgw

Re: OT: Oh the lovely noise

In reply to this post by AJ8MH-Radio.Joe.Hutchens

On 11/18/2012 11:46 AM, AJ8MH wrote:
> I use them and don't have any issues. Grow lamps are a different
> story. Anybody growing pot in your neighborhood? Bad news!

Or become friends with him. ;-)

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2013 Cal QSO Party 5-6 Oct 2013
- www.cqp.org

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