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The screen also shows that the signal from satellite 6 is the
weakest received. The satellite is currently located at an
elevation of 41° from a horizon azimuth of 341° and is
being tracked by the receiver.
Use the LEFT or RIGHT ARROW keys to check
signal strengths from other received satellites.
Important: When signals from fewer than
four satellites are being received, a 3D position
fix is not possible. GPS altitude cannot be
accurately calculated by the receiver.
Managing
Messages
The Apollo handheld GPS receiver helps you
navigate by informing you of important events.
These events are announced by alert messages
which show on the display anytime the receiver is
operating. An audible beep sounds and continues
until you press the ENTER key to acknowledge
the alert message.
Alert messages may alert you of:
airspace penetration
arrival at the destination
excessive course deviation
low battery power
parallel track navigation
loss of position fix
expiration of countdown timer
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