44 Astro 320 and DC40 Owner’s ManualDevice Tools3. Select an option:• To apply the filter to thegeocache list, select Search.• To save the filter, press BACK .After it is saved, the filter isautomatically named.Editing a Custom geocache Filter1. From the main menu, select Setup> Geocaches > Filter Setup >Create Filter.2. Select a filter.3. Select Edit Filter or Edit Name.chirpA chirp™ is a small Garmin accessorythat you can program and leave in ageocache. Only the owner of the chirpcan program a chirp, but anyone canfind a chirp in a geocache. For moreinformation about programming achirp, see the chirp Owner’s Manual atwww.garmin.com.Enable chirp Searching1. From the main menu, select Setup> Geocaches.2. Select chirp™ Searching > On.Finding a geocache with a chirp1. From the main menu, select Find> Geocaches > Show chirp™Details.2. Begin navigating to a geocache.When you are within 32.9 feet (10m) of the geocache that containsa chirp, details about the chirpappear.3. If available, select Go to navigateto the next stage of the geocache.