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

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

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ee. Receive a data message using 5-kHz DAMA message service. Depending on operation of the particular data device, the radio is programmed to either automatically download a received message from the radio buffer to the data device, or manually download a received message after the data device is ready to accept it from the radio. When using manual message release, remember to download messages so additional messages are received without losing important data. When using 5-kHz message service, the AN/PRC-117F is operated with a network state of CONNECTED and a service state of IDLE. When a sender initiates sending a data message to the terminal, the channel controller looks for the presence of the destination terminal and sets up a service between the two terminals. On successful transmission, the AN/PRC-117F indicates (in its message buffer) that it is holding a message for downloading. If the 5kHz MSG mode is set to AUTO instead of MANUAL, it sends the message immediately to the interfaced output data device. Perform the following procedure to download a message using 5-kHz message service with manual message mode: (1) Verify there is a buffered message in the radio and the radio is in MSG mode. (2) Connect the data device to either the J1 ADF connector or J3 data port, as applicable, and ensure it (connector or port) is ready to receive the message. (3) Press the CALL key and bring up SELECT REQUEST TYPE display. (4) Select DOWNLOAD MESSAGE and press ENT. (5) The service state changes to DOWNLOAD and the message is sent to the data device. When complete, the service state changes back to IDLE. (6) Check the data device for proper reception of the message. The incoming message number is decremented. C-31

C-32 Figure C-12. MSG Service Call Menu, 5-kHz DAMA ff. Log out of 5-kHz DAMA. To leave the 5-kHz DAMA channel, the terminal must log out with the channel controller. Also, this is required if shutting the radio off for any reason (such as changing the batteries or adjusting the antenna). Perform the following procedure to log out of a 5-kHz DAMA net: Note: If the radio goes off the net without logging out, the channel controller automatically logs it out after it missed 200 ROWs (approximately 30 minutes). Until it logs out, the channel controller considers the terminal logged in. If the terminal attempts to log in a second time, the channel controller may reject the second log in attempt. If a log in is rejected, go into net preset programming (Figure C-6) and change log in type to preassigned. The terminal is connected again. Return setting to overthe-air after the net connects again. (1) Press the CALL key to bring up the SELECT REQUEST TYPE display screen.

ee. Receive a data message using 5-kHz DAMA message <strong>service</strong>. Depending on<br />

operation of the particular data device, the radio is programmed to either automatically<br />

download a received message from the radio buffer to the data device, or manually<br />

download a received message after the data device is ready to accept it from the radio.<br />

When using manual message release, remember to download messages so additional<br />

messages are received without losing important data. When using 5-kHz message<br />

<strong>service</strong>, the AN/PRC-117F is operated with a network state of CONNECTED and a<br />

<strong>service</strong> state of IDLE. When a sender initiates sending a data message to the terminal,<br />

the channel controller looks for the presence of the destination terminal and sets up a<br />

<strong>service</strong> between the two terminals. On successful transmission, the AN/PRC-117F<br />

indicates (in its message buffer) that it is holding a message for downloading. If the 5kHz<br />

MSG mode is set to AUTO instead of MANUAL, it sends the message immediately<br />

to the interfaced output data device. Perform the following procedure to download a<br />

message using 5-kHz message <strong>service</strong> with manual message mode:<br />

(1) Verify there is a buffered message in the radio and the radio is in MSG mode.<br />

(2) Connect the data device to either the J1 ADF connector or J3 data port, as<br />

applicable, and ensure it (connector or port) is ready to receive the message.<br />

(3) Press the CALL key and bring up SELECT REQUEST TYPE display.<br />

(4) Select DOWNLOAD MESSAGE and press ENT.<br />

(5) The <strong>service</strong> state changes to DOWNLOAD and the message is sent to the<br />

data device. When <strong>com</strong>plete, the <strong>service</strong> state changes back to IDLE.<br />

(6) Check the data device for proper reception of the message. The in<strong>com</strong>ing<br />

message number is decremented.<br />

C-31

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