Unfortunately I have to run out of the door but I wanted to add this last long. I am hearing more Spanish language two-way comms, this time above the upper edge of the 20 meter amateur radio band, where lots of land mobile and military/government communications are heard.
These communications seem considerably more disciplined than other traffic heard this morning. Possibly government/military or NGO use (re: recent earthquake in Mexico City). Since I have to leave the radio for a little bit I'm just making the log, with the plan of coming back to see if the net is still active later on. Several numerical "strings" heard (possibly callsigns). Very professional sounding traffic. No whistling into microphones or "HOLA HOLA HOLA" heard.