[RFI] Yagis and DFing

[Dave (NK7Z)]

Make that BORED, not BOARD...  Sigh...  Typo and a spell checker...

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 12/31/22 07:03, Dave (NK7Z) wrote:
> Ed,
> I was board one day a few years ago, and took out with my mobile rig, 
> and its rear mounted vertical...  I plotted signal strength points all 
> around a known RFI source to see if an isoline map might help locate a 
> hard to find source...  It actually did indicate the area for the source 
> quite accurately...  One of these days, I will actually use that process 
> in a locate...
> 
> I have this dream of a drone, a computer, more programming experience, 
> and money than I currently have...  Wouldn't it be cool to just let a 
> drone off, have it grid up an area, take signal strength readings at a 
> set altitude, then have a computer take the results and create either a 
> heat map, or an isoline map...
> 
> Anyway, someday I may tackle that project but not soon...
> 
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist, RFI
> ARRL Asst. Director, NW Division, Technical Resources
> 
> On 12/31/22 06:40, Hare, Ed, W1RFI wrote:
>> If you are trying to locate a noise source, if a directional antenna 
>> is available at the ham's QTH, that is the place to start. It will 
>> give a general direction for that walk-around.
>> ________________________________
>> From: RFI <rfi-bounces+w1rfi=arrl.org at contesting.com> on behalf of 
>> Pete Smith N4ZR <pete.n4zr at gmail.com>
>> Sent: Saturday, December 31, 2022 8:03 AM
>> To: rfi at contesting.com <rfi at contesting.com>
>> Subject: Re: [RFI] Yagis and DFing
>>
>> Or use a Moxon which has a deep null off the center of the back
>>
>> 73, Pete N4ZR
>>
>> On 12/30/2022 7:19 PM, David Eckhardt wrote:
>>> Use the sharp *nulls off the sides* of the Yagi.  They are far 
>>> sharper than
>>> the "gainy" front lobe.
>>>
>>> Dave - WØLEV
>>>
>>> On Sat, Dec 31, 2022 at 12:01 AM Jim Brown<jim at audiosystemsgroup.com>
>>> wrote:
>>>
>>>> Remember that Yagis only have their intended directivity in the
>>>> frequency range for which they are built.
>>>>
>>>> 73, Jim K9YC
>>>> _______________________________________________
>>>> RFI mailing list
>>>> RFI at contesting.com
>>>> http://lists.contesting.com/mailman/listinfo/rfi
>>>>
>>>
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