Specifications

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RM2151 - USING THE RADIOTELEX SYSTEM Page 3-17

Activating an ARQ Call

An ARQ call can be activated to a coast station transmitting a channel free signal -i.e. the station (channel) is free

to receive a call. This will be illustrated below in the section: CALL CALL procedure.

An ARQ call can be activated to a coast station or a mobile station not transmitting a free signal. This type of call

will be illustrated later in the section: CALL ARQ procedure.

CALL CALL Procedure.

To activate an ARQ call to a coast station transmitting a free signal when the station (channel) is free to receive a

call, enter the menus:

F3 The radiotelex menu is selected.

DIRECTCALL The directcall menu is selected.

CALL The directcall call menu is selected.

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Call Commands Over End Frequency

CALL...

ARQ...

FEC (Collective)

FEC (Selective)...

High-light CALL... and press ENTER.

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Call Commands Over End Frequency

CALL..

ARQ... Selcall or station name: Lyngby

FEC (C Rx. frequency:

FEC (S ^PTx. frequency:

Approve ? YES

Alt+F1 to show list

Status: Scanning ARQ Rx: 22370.0 Tx: 22370.0

You can now type in the name of the coast station you want to call.

If the coast station is in the stations table, use the key Alt+F1 to get a station summary and choose the station you

want to call. On the line ‘Selcall or station name:’ Key in the four or nine digit selcall number of the station table, if

you prefer that in stead of the station name.

Press ENTER to jump to the next line.

On the next two lines your Rx and Tx frequency can be entered. Either direct from the keyboard or from the station

frequency table by using the keys Alt+F1.

If the station to be called is in the station table and you do not have a specific choice of the frequency pair, it is not

necessary to key in the frequencies.

Press ENTER, and to answer ‘Approve ? Yes’ press ENTER once more. The MUF programme will choose four

frequencies and the frequencies marked with a + sign from the called station’s frequency table and starts scanning

these frequencies to locate a frequency which is transmitting a free signal.

The directcall menu will now show the line “Waiting for free channel”.

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Call Commands Over End Frequency

Call in progress 14:35

Waitin

for free channel