Add a rule that returns true if none of the conditions are true. For example, I have an alert set for 4U1UN, however it often gets triggers for 4U1UN/B. I'd like it to alert for any other possible suffix except for /B by using the callsign rule for 4U1UN followed by an exclusion filter for the /B suffix.
Add a rule that returns true if none of the conditions are true. For example, I have an alert set for 4U1UN, however it often gets triggers for 4U1UN/B. I'd like it to alert for any other possible suffix except for /B by using the callsign rule for 4U1UN followed by an exclusion filter for the /B suffix.