uhf tacsat /dama multi-service tactics, techniques ... - UHF-Satcom.com

(4) Press the circular change key to see that the proper DAMA port configuration
preset is selected for the intended DAMA service request. If a different DAMA port
configuration preset is desired, use the left/right arrow keys on the KDU to scroll to the
preset number. Enter the required preset number and press ENT.
(5) Begin radio operation. View main screen for network status changes in the
order listed:
(a) ACQUIRING.
(b) RANGING (active ranging method only).
(c) LOGGING IN (5-kHz only).
(d) CONNECTED.
(6) Network status of CONNECTED indicates the terminal is ready to request or
receive services in the DAMA network. If terminal does not become connected, check
antenna pointing, loading, and programming assignment of the proper EOW TSK and
TBA. ERROR network status indicates that no DAMA EOW TSK is loaded.
l. The 25-kHz DAMA has two modes of operation: AC or DC. The channel
controller determines the frame format of the channel and the radio operates
accordingly.
m. Calls in 25-kHz AC DAMA may be made from one to five terminal or network
addresses. A network address is a predetermined group of terminals operated together
as a network. Determine the following before making a call request:
(1) Type of Service. Before placing the call, use the proper DAMA port
configuration preset for the service needed from the service state display screen. On
changing the port configuration preset with a connected terminal, the radio sends a
status report B RCCOW to the channel controller for notification of the new
configuration. For DASA dedicated calls in 25-kHz AC DAMA, a port configuration
preset with a configuration code to signify DASA must be used. Refer to current
configuration codes.
(2) Station(s) to be Called. DAMA destination presets are used in call menus to
select station(s) to be called. TBAs associated with this destination preset are shown on
the line below the DAMA destination preset name.
(3) Precedence of the Call. Use the proper precedence for the importance of the
required service. If a higher precedence than authorized is used, the call is denied. Not
all terminals have access to every precedence level. Check with organization DAMA
planners and authorization documents. At certain times, the channel controller can
place precedence restrictions. The AN/PRC-117F does not allow calls below this
precedence during these times.
(4) Duration of the Call. Request enough time to complete the required
communications; service is terminated automatically at the end of this time. See Figure
C-9. Perform the following procedure to place a call using 25-kHz AC DAMA:
(a) Press CALL key to bring up SELECT REQUEST TYPE.
(b) Select PLACE A CALL and press ENT.
C-19