What is it?

Centered around 146.575MHz is this crazy signal. Sadly, my HT can't distinguish the signal beyond noise, while the big antenna is only connected to a program that can't demodulate (as of yet). So I'm left to wonder. It sure looks interesting though.

I've got all-day meetings going on in the office tomorrow, so I'm hopeful to be able to speak with someone who might be able to give me some filtering and demodulation tips that'll set me on the right path.

Until then I can only provide you with pretty pictures.