The Miscellaneous filters provide 4 means of restricting displayed
- Filtering by message age, specified in 15 minutes steps for
up to 5 hours old.
- Showing only messages from stations that are
operator-attended. Operator-attended stations are indicated by an
alternate symbol table's symbol code, and an overlay character of
capital 'O' (for Operator). Stations that have other or no overlays
will not be displayed when this filter is checked.
- Showing only messages with priority or emergency precedence.
Emergency precedence is indicated by the text "Emergency"
(upper, lower, or mixed-case) or the Emergency A/B/C bits = 000 in
the Mic-E destination "callsign". Priority precedence is
indicated by using lower-case 'n' or 's' (instead of the
conventional uppercase 'N' or 'S') in an uncompressed position
message's latitude, or specifying the Priority value in the Mic-E
- Showing only stations that are directly heard by this station,
or local or one-hop from this station.