Know my DFX has issues with it but what about the other whites detectors and
how are you dealing with it.

I've got a great hunting spot that sits next to a factory and can only hunt it on Sundays when the factory is closed as the overhead power lines feeding the plant generate so much EMI its unhuntable. I've tried running at 15khz only
and reducing the sensitivity but nothing helps. Even went to a small coil. Know its an extreme case but it can happen.

Got this from another forum member. Something to try when hunting under power lines.
For the powerlines hunt I used the "frequency offset" mode on the VX3 and tried each offset setting until the machine ran quiet and stable. I was in Hi Pro mode for that hunt. It's a very convenient feature, and I was amazed I was able to detect so close to the hi voltage lines without interference! Mark used his MXT Pro and ran it in saltwater mode, which also worked very well.