User's Manual

Revision 0.2
06/24/15 Revision 0.2
Subject To Change without Notice
Messages are composed of 1 or more 9-
byte payloads. The
payloads greater than 9 bytes will require multiple on
There are brief periods of time w
here there is no satellite in range of the simplex transmitters due to obstructions
and/or
satellite coverage geometry. Since a simplex device has no way of knowing if a transmitted message has been
successfully received, the STINGR
device is designed to
sent over the Globalstar network. The default value for the number of redundant
means that each message sent to the
STINGR
data payload.
The redundant transmissions
The transmission sequence for a single-
packet message using the default setting of 3 redundant
below.
Revision 0.2
STINGR Users Manual
Subject To Change without Notice
P a g e
Figure 3 Simplex Messaging
byte payloads. The
STINGR can only transmit 9-
byte on
payloads greater than 9 bytes will require multiple on
-air packets
to be transmitted for each user payload.
here there is no satellite in range of the simplex transmitters due to obstructions
satellite coverage geometry. Since a simplex device has no way of knowing if a transmitted message has been
device is designed to
send
multiple (redundant) transmissions
sent over the Globalstar network. The default value for the number of redundant
transmissions
STINGR
will be transmitted 3 times. E
ach transmission will contain the exact same
The redundant transmissions
of each message will be sent on a randomized 5-
minute
packet message using the default setting of 3 redundant
P a g e
| 6
byte on
-air messages, so user
to be transmitted for each user payload.
here there is no satellite in range of the simplex transmitters due to obstructions
satellite coverage geometry. Since a simplex device has no way of knowing if a transmitted message has been
multiple (redundant) transmissions
for each message being
transmissions
per message is 3. This
ach transmission will contain the exact same
minute
nominal interval.
packet message using the default setting of 3 redundant
transmissions is shown