[RFI] Guidance on finding noise?

Kenny Silverman kenny.k2kw at gmail.com
Sun Jan 12 10:25:42 EST 2020


It’s a 130’ shunt fed tower.  The closet beverage is about 20’ from the 100’ radius radial field.  The noise only comes on at night and goes off at dawn  so we didn’t consider this reradiation from the vertical. And the strongest signal is not towards the vertical. 

Regards , Kenny K2KW 

> On Jan 12, 2020, at 7:12 AM, WW3S <ww3s at zoominternet.net> wrote:
> 
> What is the transmit antenna(s) ? Need to make sure it’s not noise reradiated by a vertical or inverted L 
> 
> Sent from my iPad
> 
>> On Jan 11, 2020, at 11:03 PM, Kenny Silverman <kenny.k2kw at gmail.com> wrote:
>> 
>> The noise is mainly on 160. Slight to no noise on 80/40, and no detection at AM VHF. 
>> 
>> Regards , Kenny K2KW 
>> 
>>>> On Jan 11, 2020, at 10:16 PM, AA5CT <jwin95 at yahoo.com> wrote:
>>> 
>>> 
>>> Kenny, 
>>> 
>>> Did you whip out your VHF and UHF beams with an AM rx
>>> mode receiver once close to the suspect poles? That is the
>>> only way, and it is a conclusive way, that I have found to ID 
>>> noisy power poles once the HF DF loop gets you in the
>>> area of the noise source.
>>> 
>>> de AA5CT
>>> 
>>> .
>>> .
>>>> On Saturday, January 11, 2020, 9:03:04 PM CST, Kenny Silverman <kenny.k2kw at gmail.com> wrote:
>>> 
>>> 
>>> KC4D,N3AC and N3CW went hunting with a KX3 and a DX Engineering Amplified RX loop and again didn’t find anything conclusive. Basically they said the loop performed about the same as one of the AM radios we have that’s fairly directional.
>>> 
>>> We’ve been looking so many times that we’re getting frustrated.  There are a few noisy clusters, but we can’t find a specific pole or house.  Nor can we assess if the noisy areas are actually the key offender(s)
>>> 
>>> Do we call in the clusters we found ?  Or do we really need to pinpoint the source(s) better before we ask for crews to come out?  We’re concerned about crying wolf and/or giving a list of more than a dozen poles for the power company to look at. 
>>> 
>>> Regards , Kenny K2KW 
>>> 
>>> P.S.  the only success so far is fixing my subject line typo 🤓
>> _______________________________________________
>> RFI mailing list
>> RFI at contesting.com
>> http://lists.contesting.com/mailman/listinfo/rfi
> 


More information about the RFI mailing list