5
Brevity Messages
—A brevity message is activated by pressing and releasing buttons A
through D or any 2-, 3-, or 4-button combinations. Each brevity message can be assigned a
specific meaning or code via Gotham, with the exception of the A&D button combination.
The A&D button combination is reserved for Emergency Mode. Button combinations should be
entered by pressing all buttons simultaneously. This ensures that the combination will be
reliably registered. After releasing the buttons, four options are available to the user:
Option
Description
Wait
If BAT already has a GPS fix at the time of the button
press, transmissions typically occur within 4 seconds;
otherwise, BAT waits for a GPS fix prior to sending—up to
120 seconds in Normal Mode.
Abort
Press and release Power. The transmission may be
cancelled at any time while the TX LED is still flashing.
Force
Press the button again. This forces BAT to transmit
regardless of GPS fix status.
Power Off
Press and hold Power until a short vibration occurs and all
LEDs extinguish.
Button Options
The optimum orientation of BAT during transmission is face up (the side with the LED
indicators) toward the sky, held at arm’s length away from the body. Completion of brevity
message transmission is indicated by a single vibration.
NOTE: To transmit a brevity message and position with Normal settings, BAT should remain
outdoors in a location with a clear view of the sky. This typically takes 15 seconds to complete.
Beacon Mode
—BAT can be configured to beacon at a set interval.
1. Power off BAT.
2. Power BAT on while holding A. Release Power button after a single vibration
occurs, then release the A.
3. Upon releasing the buttons, both GPS and TX LEDs illuminate and a short vibration
occurs.
