I agree with Dave, an audio dish would be the last thing I would buy
(lowest priority item). A problem I found while working with the local
power company that had an ultrasonic dish is that we could detect arcing on
every pole we checked, but out of all the poles we checked there was only
one pole that was the root cause of the RFI I was hearing at my house 1.1
miles away.
The most important feature I have found on any of my portable radio
direction finding systems (HF or VHF) that I use for tracking down RFI is
the ability to throw in a lot of attenuation when I get close to the
source. If you get close to the source and the signal is full strength
even on the nulls of the antenna, there is then no way you can do
additional direction finding.
Don (wd8dsb)
On Wed, Jan 17, 2018 at 8:23 AM, Dave Cole (NK7Z) <dave@nk7z.net> wrote:
> Hello Mike,
>
> No need for the dish, it just locates arcing, and that is the Power
> companies job. Across the two years I had a dish, I think I used it once
> or twice.
>
> Better you save your bucks and build a loop with the saved cash. You will
> get a lot more use out of the loop than the dish.
>
> 73s and thanks,
> Dave
> NK7Z
> http://www.nk7z.net
>
> On 01/16/2018 08:36 PM, W0MU Mike Fatchett wrote:
>
>> Thanks all!
>>
>> Other than the ultra sonic dish I have most of the other pieces parts.
>>
>> Appreciate all the links and hints too!
>>
>> W0MU
>>
>>
>> On 1/16/2018 9:17 PM, Dave Cole (NK7Z) wrote:
>>
>>> Hi,
>>> See:
>>>
>>> http://nk7z.net/rfi-now-house-cleaning/
>>>
>>> for a three part series on how I managed to calm down my RFI
>>> environment. Also see:
>>>
>>> http://nk7z.net/sdr-rfi-survey-p1/
>>>
>>> for a tool to characterize your RFI.
>>>
>>> 73s and thanks,
>>> Dave
>>> NK7Z
>>> http://www.nk7z.net
>>>
>>> On 01/16/2018 11:39 AM, W0MU Mike Fatchett wrote:
>>>
>>>> What are people using for noise sniffing? I saw the MFJ dish but I try
>>>> to avoid their stuff.
>>>>
>>>> I know there is no one perfect tool.
>>>>
>>>> W0MU
>>>>
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>>>>
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>>
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