A simple answer- I hope.
All RF follows the inverse square law, BUT RF can be carried on any
electrical conductor. Power lines, telephone line, and fences, along
with other conductors can act as transmission lines and/or antennas. A
rusty connection on a fence, or guy wire can become an RF generator
Sometimes a power line may carry a signal quite some distance, and as
Jim said, the power transformer(s) may limit the distance the signal may
travel on the power lone.
On 6/11/2018 5:36 PM, Tony wrote:
All:
These might be a silly questions, but given how complex this subject
is, I thought I'd ask anyway.
1. Does the inverse square-law apply to all devices that emit RFI
where the RF energy emanating from the device falls off exponentially
with distance?
2. Is it common for power and other utility cables to carry and
radiate RFI from a device located in a neighbors home over long
distances before being attenuated?
In a case like that, I would imagine locating the source of
interference would be nearly impossible with all that RFI being
radiated by utility lines.
73, Tony -K2MO
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Roger (K8RI)
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