Who polices radio frequencies in NZ?  Out about 30 minutes ago drove through an area of constant audible interference from my Vodafone cell phone.  It was the sound your phone makes occasionally when (I assume) the nearest tower is saying 'hello, where are you?'. No big deal, but it went on for >20 minutes, and covered an area at least half a kilometer across.  Probably more, but that's the area I drove through.

The were occasional undertones, that might have been Morse, but only brief snatches.  It was mostly fairly constant.  So it may have been Amateur  Radio with a dirty amp, or maybe a mucky arc welder perhaps radiating through a steel frame.  This was exactly near the 2, Rose street, Blenheim discussed in the GPS thread last week, so close to construction in the Bunnings, Pak & Save, and the still being built PGG buildings.

When engine management was first being developed, we had instances where an engine would stall if close to a radio transmission from something like a Taxi.  So to test efforts to harden the engine management electronics, the relevant section built a spark generator.  It was able to completely fill the spectrum analyzer display from 20 feet.  

Also reminds of when white asbestos was discovered in the main workshop adjacent to our section, and specialist were brought in to deal with it.  They seemed like cowboys to us, but they were annoying the heck out of us with a cheap transistor radio just the other side of the wall, and when we shouted through the wall they just swore at us.  So we rigged a small frequency generator close to the radio on our side of the wall, and set it to beat with the tranny's IF.  When they came to investigate we turned of the FG, and turned it back on again when they walked away.  They soon gave up. :-)

Anyway, sorry about the tangent.  If the interference is ongoing, who could I report it to?