[RFI] RFI location finders

W0MU Mike Fatchett w0mu at w0mu.com
Mon May 26 22:10:17 EDT 2014


I have a handy talkie and a mobile rig with AM.  I have a directional 
2/440 Arrow beam that I can use.

I am pretty sure what I have is power line noise.  One of the major 
source was fixed but might be acting up again and then I just noticed 
some noise in another direction.

They don't seem to come and go on a regular basis so I doubt it is my 
neighbors growing the wacky weed.

Thanks for all the replies.

Mike W0MU

On 5/26/2014 4:15 PM, Jim Brown wrote:
> I'll repeat my recommendation of a VHF/UHF radio that has an AM 
> detector. I have two -- a Kenwood TH-F6A talkie, and a Kenwood TM-V71A 
> (I think that's the model number) mobile rig.
>
> I drive around monitoring around 160 MHz, then when it gets really 
> loud, switch to a frequency in the 450-525 MHz to nail the source when 
> I'm close.
>
> This only works for arcing (mostly power lines), which is extremely 
> broad band. It does NOT work for electronically generated trash.
>
> Also, remember that you can hold a talkie close against your chest to 
> form a half-space antenna that will help with DFing.  I once won our 
> Chicago club's annual foxhunt using nothing more than a TH-F6A with a 
> duckie.
>
> 73, Jim K9YC
>
>> On 26 May 2014 at 13:01, W0MU Mike Fatchett wrote:
>>
>>> >http://www.nationalrf.com/type_hfdf_vector.htm.
>>> >
>>> >This is one option.  What are the others?
>>> >
>>> >I recall reading about a dish type that is more directional.
>
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