[HCDX]: Re: Noise from power lines

[jerry.monroe@xxxxxxxxxxxxxxxxxxxxx]

re: I live about 400 meters from two 400 kV power supply lines

Bjarke,
400 KV lines are serious stuff, I have had good luck with my local power
company and RF leakage team in finding and repairing local "noisy" power
lines.

It is a concern to them, as it points to possible  problems in the future
(i.e. cracked insulators,etc.).

But 400,000 volt power lines are a different matter, even if their "hf
noise" is down 100 decibals the noise emitted is still many volts running
down their "suspended long wires" !

If the Power Company folks say all is in order,  than I would suggest ,
perhaps phasing two antennas to put a null in the direction of the power
lines (MFJ has a box for this), or perhaps use low frequency loop antennas
(major nulling antennas) of which they're are plenty of do-it-yourself
projects out there for you to try.

good luck,

Jerry (central NY)


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