Calling on VHF Radio

The calling examples used are sample call signs only.

Before transmitting, listen for a period long enough to ensure that harmful interference to transmissions already in progress is not likely to occur. If such interference seems likely, wait until the transmissions in progress are completed before making your call.

A station having a distress, urgency or safety message to transmit is entitled to interrupt a transmission of lower priority.

Single Station Call

When establishing communications with a specific station, transmit the call sign of the station being called, followed by the call sign of the station making the call, as shown in the following example.

Example

Sea Wolf (said once or if communication conditions are difficult not more than 3 times)

THIS IS

Riding Hood

OVER

Reverse Calling example – This is Riding Hood calling Sea Wolf

Avoid REVERSE calling as this is incorrect procedure.

Remember that the identifier of the station being called is always spoken first, followed by THIS IS and your own station’s identifier.

Replying

When you hear a call directed to your station, reply as soon as possible. Advise the calling station to proceed with the message by means of the words GO AHEAD, or, if you are occupied, by saying STAND BY followed by the estimated number of minutes until your reply. Do not ignore the call. This may result in unnecessary calling, which uses up valuable air time in a crowded environment.

Example

Riding Hood

THIS IS

Sea Wolf

GO AHEAD

OVER

Replying to Calls when Information Is Missing

When you hear a call, but are uncertain the call is intended for your station, do not reply until the call is repeated and understood.

When your station is called but the identity of the calling station is uncertain, you should reply immediately, using the words:

STATION CALLING (your station’s identification)

SAY AGAIN

OVER

Termination of Communications

To terminate communications, simply conclude your transmission with the command OUT (which means “conversation is ended and no response is expected”).

Example

Sea Wolf

THIS IS

Riding Hood

RECEIVED MESSAGE REGARDING DINNER

Riding Hood

OUT

Corrections and Repetitions

Corrections and Repetitions during Transmission

When an error has been made in transmission, the word CORRECTION should be spoken, the last correct word or phrase repeated and the correct version transmitted.

Examples

AT DOCK ALPHA ONE

CORRECTION DOCK ALPHA TWO

Repetitions after Completion

If the receiving operator desires a repetition of a message, the words SAY AGAIN should be transmitted. If repetition of only a portion of a message is required, the receiving operator should use the following appropriate phraseology:

SAY AGAIN ALL BEFORE … (first word satisfactorily received).

SAY AGAIN ALL BETWEEN … (last word correctly received prior to the missing segment) and … (first word

correctly received after the missing segment).

SAY AGAIN ALL AFTER … (last word satisfactorily received).

Examples

Riding Hood

THIS IS

Sea Wolf

SAY AGAIN ALL BEFORE “DOCK”

OVER

Riding Hood

THIS IS

Sea Wolf

SAY AGAIN ALL BETWEEN “PROCEED” AND “TIME”

OVER

Sea Wolf

THIS IS

Riding Hood

SAY AGAIN ALL AFTER “LOCATION”

OVER

Request for repetition of specific items of a message should be made by speaking the words SAY AGAIN followed by the identification of the message desired.

Examples

SAY AGAIN LOCATION

SAY AGAIN TIME

Unsuccessful Call

When a station called does not reply to a call sent three times at intervals of two minutes, the calling station shall cease and not renew the call until after an interval of three minutes. Before renewing the call, the calling station shall attempt to ascertain that the station being called is not in communication with another station.

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