I see the following list of signals on my SDRs over the last few months but I cant identify them. Can anyone help?
1. 6.486 mhz - I think it is rtty 75w but i cant decode it.
2. 6.385 and 6.423 mhz. These look like some kind of OFDM.
I have scoured the internet for these frequencies but I havent been able to turn up any leads.