Figure 4-15. RECEIVING MK OTAR

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RECEIVING MK OTAR

Target NCSs perform the steps shown in Figure 4-15, below (also see

Special NCS Task 5, "Receive and Store TEK Sent by MK Method of

OTAR," for detailed procedures).

Prepare radio to receive MK OTAR: FCTN to SQ

(1)

ON, COMSEC to CT and DATA to OFF.

Prepare ANCD to receive MK OTAR: Turn ANCD

(2)

ON, enter Radio, COMSEC, RV.

Connect ANCD to RT; ACK to NCS when ready for

(3)

MK.

When directed, set RT to Chan 6; press [RCV] on

(4)

ANCD.

Return to operational channel.

(5)

Enter Text ID; skip tag sequence.

(6)

New TEK is now stored in target NCS ANCD ready

(7)

for distribution when required.

Figure 4-15. RECEIVING MK OTAR

SENDING AK OTAR

To send a new TEK to net members by AK OTAR, the NCS will follow the

steps shown below in Figure 4-16 (also see Special NCS Task 4,

"Send TEK to Net Operators Using AK Method of OTAR"):

(1)

Prepare NCS radio for AK OTAR: FCTN to LD,

MODE to FH-M, COMSEC to CT and DATA to

OFF.

Prepare NCS ANCD to send AK OTAR: turn ON;

(2)

enter Radio, COMSEC, and AK; select key.

Alert operators to standby; press [SEND].

(3)

Load AK OTAR TEK into NCS radio: select key and

(4)

press [LOAD] / [STO]/[CHAN] on RT

Update KEK used for AK OTAR: enter VU, select

(5)

KEK; and press [RCV] on ANCD.

Load updated KEK into NCS radio: enter text ID,

(6)

Ld, and KEK; press [LOAD], [STO], and 6.

Figure 4-16. SENDING AK OTAR

The NCS sending an AK OTAR needs to do two things after sending the

FOLLOW UP ACTIONS

new TEK to net members. First, while the new TEK is automatically

loaded into receiving station radios, it must be loaded from the ANCD

into the NCS RT following the AK OTAR. Also, while the KEK in

receiving radios is automatically updated, it must be updated by the

sending NCS. (The NCS should always have his primary net's KEK in

his RT)

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