That 146.550 Wed, 7:30pm simplex net is the "Preparedness Educational Network' group. Topics cover many aspects of prepping. I like the simplex aspect of the net; it shows me what parts of the front range I can hear directly.
Its my understanding the weekly sessions topics are random in nature changing from week to week with each station hosting. I have not participated in this net yet, got tied up this last Wednesday and forgot about it.