I've heard the "squeaky wheel" from listening to shortwave before. I found this interesting. I know one is MHZ and the other KHZ but it's an odd coincidence they are the same frequency number of 3828.
You can go to any SDR thats available online to listen to shortwave. I use this one a lot-http:// sdr.hu/
It's a tone broadcast on a frequency that no one can exactly pin point the source of. There are many like this on shortwave. Some come and go at random times. I said nothing about Chernobyl. Considering we are talking about possible triggering signals here, I think it might be worth digging in to.