Page layout (for design only)

1. Page layout (for design only) GPS Pocket Guide 3 1/2” fold lines 5 1/2” 14” Gutters Print margin Template: Width: 14”; height: 5 ½”. Each panel is 3 ½”.Gutters: ¼” (red lines). Fold lines in dashes. Inside margins: 1/4” (extent of text blocks – red lines). Font: Arial, 10 pt. (except mission checklist). Headers in bold.

2. Receiver Operation Datum & Position Format Waypoint Naming Suggestions AR Archeological Site AS Accident Site BR Bridge CA Camp DB Division Break DL Dozer Line DP Drop Point ER Escape Route FB Fuel Break (Natural) FL Fire Line* FO Fire Origin GT GateHB Helibase HS Helispot HZ Hazard** IC ICP MP Milepost MV Medivac Site OP Observation Point PR Protected Resource RD Road, Trail, Track RH Rehab Site*** RJ Road Junction RS Radio Site SA Staging Area SC Stream Crossing SF Spot Fire ST Structure SZ Safety Zone WS Water Source Button Layout Update Almanac GPS Information Page Always operate receiver in either “3D GPS Location”or “3D Differential” mode (if receiving WAAS signal). Avoid using receiver in 2D mode due to reduced position accuracy. Note receiver mode information on the mission metadata form. Front Field Reference for the Garmin GPSMAP 76S Map Page • The federal datum standard for geospatial data is North American Datum 1983 (NAD83). The position format and datum should be set to match the communication used on the incident, typically Degrees,Minutes,Seconds (hddd°mm’ss.s”), NAD83 datum or Degrees,Decimal Minutes (hddd°mm.mmm’), WGS 84 datum when working with air resources.But… • If using GPS receiver with a paper map, set receiver datum to match map datum. Possibly NAD27! • If hand entering waypoints from other sources, (e.g., GIS, air resources) change coordinate system format and datum to match before creating points. Press Menu button once to open Map Setup. Set desired map display preferences. Use Map to visually monitor track log collection. Download Garmin MapSource maps for greater receiver map detail. Electronic Compass Page Press Menu button once to open Compass Setup menu. Select Calibrate Compass to calibrate the compass (do this regularly to maintain compass accuracy). Symbol indicates electronic compass is on (red arrow). Download a new almanac if GPS receiver has been moved more than 300 miles while turned off OR if off for a couple of weeks. Turn receiver on and place in location with clear view of sky, allow 15 minutes for download. The almanac is automatically updated whenever the receiver is in use. * B – Blasted, D – Dozer, H – Hand, W – Wet ** M – Mine Shaft, S – Snag, W – Well *** F – Fence, R – Road, W – Water Example: DBXY = X - Y division break. Select Main Menu, Setup, Location tab to set compass NorthReference to True, Magnetic, Grid or User.From any page press and hold Page button to turn compass on or off at any time. Caution: Compass on consumes more battery power. Receiver Setup Main Menu From any page, press Menu button twice. Toggle to Setup, press Enter button once. Lamp: Turn receiver on; adjust backlight/contrast.NAV: Go to navigation page; man overboard.ZOOM: Map page zoom in or out.PAGE: Advance to next page. Turn compass on/off. MENU: Once to open active page menu; twice to open Main Menu.ENTER: Selects a menu option. Mark waypoint.QUIT: Exit any menu. Return to previous page. Wide Area Augmentation System (WAAS) Setup Page WAAS improves accuracy of GPS positions but relies on direct line of sight to one of two geostationary satellites. Ensure GPS is held upright (use bracket in aircraft or external antenna) to maximize view of southern sky for highest accuracies. Go to Time and set to Central. Go to Location tab and set Position Format hddd°mm’ss.s”and Map Datum to NAD83. This Pocket Guide was originally created as a supplement to the GPS for Fire Management & ICS course. Garmin™ and MapSource™ are registered trademarks of Garmin International™. Monitor power and memory use from Main Menu.

3. Average Position of Waypoint Collect New Waypoint Collecting Lines and Polygons Track Log Setup Mission Checklist Area Calculation Back Collect line and polygon features using the “Active” Track Log. To start collecting an active track log, go to Setup Track Log Menu and set Recording to Stop When Full. Don’t select Wrap When Full. To pause logging either during the same track log or Toggle to select Tracks from Main Menu list. Press Enter button to open Tracks page menu. Press Menu button to open Tracks menu. Set Record Mode to OFF for setup. Press and hold Enter button to create a new waypoint. Do not edit date/time field (this information is needed for GIS). Select Ok and press Enter button to save waypoint. Or, press Menu button once to access waypoint options menu. • The Federal datum standard for geospatial data is NAD83. When reporting position of Lat/Long in degrees minutes seconds, degree decimal minutes, or decimal degrees, include all decimal places available to improve precision. • Briefing • Plan mission to achieve the objectives. • Are mission logistics in place to effectively complete the mission? • Is delivered GPS data or product format understood? Equipment • Select appropriate GPS receiver for the mission. • Use an external antenna whenever possible. • Have adequate battery supply or power source. • Take paper map and compass. • Take notebook and pencils. • Take GPS metadata form. • Prepare GPS receiver • Set correct datum and coordinate system to NWCG (see above) or incident standard. • Update receiver almanac for the local area. • Clear memory: download and delete waypoints, active log and saved tracks if not needed for next mission. • Set up Track Log recording interval based on method of travel, speed, and size of area to be mapped. • Check wires, connections and power source. • Verify all GPS settings are correct prior to mission. Aerial mapping mission • Brief pilot on mission prior to takeoff. • Ensure reliable external antenna connection. • Carry spare GPS receiver and extra batteries. between different track log segments, set Track Log to Off. Tracks Menu displays percentage of Active Track Log memory used. Monitor memory usage to complete the mission. When collecting polygons, turn track log off just shy of starting point. Overlap causes GIS issues and miscalculates area if you save track log. Clear Active Log and Delete All Saved Tracks. Select Setup Track Log and press Enter button once. Mark waypoint (press and hold Enter button). Name waypoint if desired. Do not edit date/time field. Press Menu button once to open Waypoint Options menu. Set Interval to Time. Set Interval Value based on speed of travel during data collection, and size of area to be mapped. A total of 10,000 track points are available. Select Average Location and press Enter button once. Averaging begins automatically. Saving the Active Track Log can be done for area calculation, but Active Track Log should be used for download to GIS. After collecting a perimeter track, open Tracks page and select Save. Select log from list and press Enter button. Area will be displayed in selected format. Press Quit button Approximate log times (with empty Track Log): One second interval: 2 hours, 42 minutes log time. Three second interval: 8 hours, 18 minutes log time. Five second interval: 13 hours, 48 minutes log time. Suggested log rates (varies by speed of travel): Helicopter: 1 - 2 second log interval. Vehicle: 2 - 3 second log interval. Walking: 2 - 5 second log interval.Logging interval can be changed at any time while collecting a track log. Note Measurement Count for each waypoint on metadata form. Select and press Save when done. Positions will be averaged into a single waypoint. Average waypoint for a minimum of 30 positions (collection rate is one second per position). to exit without saving. A saved track log will have fewer track points, reducing the quality.