Cold Start Procedure

TM 11-5820-890-10-8

4.5e.

Cold Start Procedure

FORMER PRIMARY

Prior to the fielding of ANCDs and PLGRs, the Cold Start procedure was

the primary method of net opening.

NCS RESPONSIBILITIES

The NCS is responsible for announcing the date-time of net opening,

ensuring net members have all required COMSEC key and FH data,

and for sending the net opening ERF.

LOADING THE RT

Net operators are required to load COMSEC key and FH data into their

radios in preparation for the Cold Start ERF. Each receiving radio must

have a TSK loaded in order to receive other required FH data by ERF

SENDING THE ERF

At the prescribed time, the NCS calls the net and announces that the

net opening ERF will now be sent. To do so, the NCS merely retrieves

appropriate data from the channel where it was stored and presses

[ERF] on the RT keypad. (See Figure 4-9 below or NCS Primary Task 4

for detailed procedures.)

RECEIVING THE ERF

Receiving operators standby at the announced time with FCTN set to

LD and MAN channel selected. When the ERF is received, operators

will note the signal display jump and the RT display will show "HF XXX".

The operator then presses [STO] followed by the channel number in

which the ERF data is to be stored.

ICOM FILL MINUS

If operators use ICOM fill procedures for their Cold Start net opening

preparations, but omit sync time, their radios will be fully operational

once the ERF loads sync time into the base clock

load SC frequency in MAN channel.

(1)

load COMSEC key and FH data into RT

(2)

Prepare radio to receive ERF: FCTN to LD,

(3)

COMSEC to CT CHAN to MAN, MODE to FH.

Standby for NCS to send ERF

(4)

When ERF is sent, note sig display activate and

(5)

display show "HF XXX."

Press [STO] and channel number for storage.

(6)

Set FCTN to SQ ON.

(7)

Call NCS and enter the net, or wait for NCS call.

(8)

When all operators have entered the net, the Cold

(9)

Start net opening is complete.

Figure 4-9. COLD START NET OPENING

SELECTIVE USE

The Cold Start method of net opening is more demanding than the Hot

Start procedure, but it can be useful in situations where the NCS

desires to bring all operators into the net at the exact same time.

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