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QRN on 4 metres

I was hoping that the QRN on 4 metres would be less for the cumulative
contest yesterday as the weather was warmer and there would be less
thermostat and boiler control noise.

How wrong I was, it was far worse than usual making operating over a
120 degree segment impossible. It was peaking in one particular
direction. OK, there are houses in that direction but there is also a
CCTV distribution cabinet and I remembered seeing someone working
inside the box last week.

The question, eventually, is; has anyone else suffered QRN from
equipment installed in such a cabinet?

Am trying to purloin a portable receiver to confirm it as the source
and as to if the radiation is on 70 MHz or a harmonic or getting into
the 28MHz IF.

Anyone had any joy with cable companies taking action on radiating
equipment?

Thanks,

David

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