Who Is Monitoring 2m Simplex?

How can Amateur Radio Operators find out who—in their vicinity or at another location—might be monitoring the 146.520 MHz National FM Simplex Calling Frequency?

Jeremy KK4FPK can help answer this question with his map of stations whose operators claim that they routinely monitor 146.520 MHz.

Do you regularly monitor 146.520 MHz? Add your callsign to this map using the KK4FPK contact page.