Rick,
Before you invest time searching for the RFI outside your home, you should be
certain that its not originating from inside your own home. You don't have to
introduce a new device for RFI to originate from your home, RFI can be caused
by many chenges that can heppen to your existing devices and infrastructure.
Shut off all of the breakers except the breaker feeding your radio, and don't
forget to turn off all UPSs too. If the RFI is still there, then you know
you're ready to look outside your home.
73
Frank
W3LPL
---- Original message ----
>Date: Wed, 26 Jan 2011 09:05:59 -0800 (PST)
>From: Rick Scott <w7psk@yahoo.com>
>Subject: Re: [RFI] Old RFI back and a new one help please
>To: "Battles,Richard" <Battles.Richard@lee.k12.al.us>, "rfi@contesting.com"
><rfi@contesting.com>
>
>Well I have not added a power supply here.
>
>All our lines are underground until the top of the hill. Would that make a
>difference>
>
>
>
>
>----- Original Message ----
>> From: "Battles,Richard" <Battles.Richard@lee.k12.al.us>
>> To: "rfi@contesting.com" <rfi@contesting.com>
>> Sent: Wed, January 26, 2011 8:34:01 AM
>> Subject: Re: [RFI] Old RFI back and a new one help please
>>
>> Scott, this sounds like a switching power supply in you home, or near you
>> from
>>a neighbor. switching power supplies sound like a buzzsaw. the rfi from
>>the
>> supply will be conducted into the house wiring, then into the power lines
>> from
>>the power company. the rfi will not go past the transformer, on the pole,
>>but
>>will flow
>> into the ground system of the power system.
>>
>> a common mode choke will most likely fix the problem.
>>
>> richard
>> wb4byq
>>
>> ________________________________________
>> From: rfi-bounces@contesting.com [rfi-bounces@contesting.com] On Behalf Of
>>Rick Scott [w7psk@yahoo.com]
>> Sent: Wednesday, January 26, 2011 10:00 AM
>> To: rfi@contesting.com
>> Subject: [RFI] Old RFI back and a new one help please
>>
>> The noise I talked about a while ago is back. It was a blissful 2 weeks
>>without
>> it.
>> But last night It showed up again. This bites. Ive got the ARRL sending
>> me
>>a
>> helpful
>> gent soon. He isn't available right now due to family issues but I'm sure
>> he
>> can help.
>>
>> Ive got a new one that showed up too that's really strong. Hopefully some
>>have
>> heard it.
>>
>>
>> Its a buzzsaw sound that lasts for 1 second and cycles every 6 seconds. So
>> every 6 seconds
>> I get 1 second of extremely strong buzzsaw.
>>
>>
>>
>>
>> Whee I love city living.
>>
>> Scotty W7PSK
>>
>>
>>
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>
>
>
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