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

(1) Type of Service. Before placing the call, use the proper DAMA port
configuration preset (from the service state display screen) for the service needed. On
changing the port configuration preset with a connected terminal, the radio sends a
status report B RCCOW to the notify channel controller of the new configuration. For
DASA dedicated calls in 25-kHz AC DAMA, use a port configuration preset with a
configuration code to signify DASA. 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 restricted 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) Select the destination to be called. Use the left/right arrow keys to
select the DAMA destination preset number field, then enter the preset number needed.
As an alternative, select the destination name field or scroll through the DAMA
destination presets names with the up/down arrow keys. Press ENT when proper
destination preset number or name is in view. The TBAs associated with this
destination preset are shown at the bottom of the display.
(d) At the next display screen, choose the precedence of the call and press
ENT.
Note: When the channel controller places system restrictions, it sets the
minimum precedence required to place a call on the DAMA channel. The
call precedence not authorized is no longer shown on AN/PRC-117F call
menus.
(e) Enter the required call duration in number of seconds, minutes, hours,
or days (or input 0000 for indefinite). Use the left/right arrow keys to select either the
unit digits field or the units field. Press ENT when correct time and units are selected.
(f) The display returns to the main operational display. Service state
changes to PENDING. Wait for the radio to send the request to the channel controller.
(g) Observe the following service states:
• PENDING—Radio terminal is negotiating the sending of the call
request and action on it from the channel controller. Wait until it becomes active or a
system message is received concerning the request.
C-21