Chapter 3Chapter 3

MESSAGE SENDING

RADIO CHECKSRADIO CHECKS

SIGNAL STRENGTHSIGNAL STRENGTH

LOUDLOUD The strongest signalThe strongest signal

GOODGOOD

WEAKWEAK

VERY WEAKVERY WEAK The weakest signalThe weakest signal

FADINGFADING Loud to Very WeakLoud to Very Weak

Assessment Start

RADIO CHECKSRADIO CHECKS

READABILITYREADABILITY

CLEARCLEAR Excellent SignalExcellent SignalREADABLEREADABLE SatisfactorySatisfactoryUNREADABLE UNREADABLE Not readableNot readableDISTORTEDDISTORTED Difficult to hearDifficult to hearINTERMITTENTINTERMITTENT Goes on and offGoes on and offINTERFERENCEINTERFERENCE Background noiseBackground noise

Assessment

RADIO CHECKSRADIO CHECKS

MRG91 This is MRG84 Radio check - over.MRG91 This is MRG84 Radio check - over.

MRG84 This is MRG91 Good Readable radio check - MRG84 This is MRG91 Good Readable radio check - over.over.

MRG91 This is MRG84 Loud clear - outMRG91 This is MRG84 Loud clear - out

Radio checks can be with a known station.

For example:

Assessment

RADIO CHECKSRADIO CHECKS

Alpha Charlie This is MRG84 Radio check - overAlpha Charlie This is MRG84 Radio check - over

MRG84 This is MRG77 Good readable radio check - MRG84 This is MRG77 Good readable radio check - overover..

MRG77 This is MRG84 Weak readable - out.MRG77 This is MRG84 Weak readable - out.

Radio checks can also be obtained generally

For example:

Assessment End

MESSAGESMESSAGESTHE CALLTHE CALL MRG 02 This is MRV 12 - OverMRG 02 This is MRV 12 - Over MRV 12 This is MRG 02 - Send - OverMRV 12 This is MRG 02 - Send - Over

THE TEXTTHE TEXT MRG 02 This is MRV 12. Arrange for mini MRG 02 This is MRV 12. Arrange for mini

bus to be sent to this location - Over.bus to be sent to this location - Over.

THE ENDINGTHE ENDING MRV 12 This is MRG 02 - Wilco - OutMRV 12 This is MRG 02 - Wilco - Out

Assessment Start

ABBREVIATED CALLSIGNSABBREVIATED CALLSIGNSFixed StationsFixed Stations

G 02 This is V 12 - OverG 02 This is V 12 - Over

V 12 This is G 02 - Send - OverV 12 This is G 02 - Send - Over

G02 This is V 12 – Arrange for minibus G02 This is V 12 – Arrange for minibus to be sent to this location - Overto be sent to this location - Over

V 12 This is G 02 - Wilco - OutV 12 This is G 02 - Wilco - Out

Assessment

ABBREVIATED CALLSIGNSABBREVIATED CALLSIGNSMobile StationsMobile Stations

G 02A This is V 12Z message - over.G 02A This is V 12Z message - over.

V 12Z This is G 02A send you message - over.V 12Z This is G 02A send you message - over.

G 02 A This is V12 Z request minibus to pick G 02 A This is V12 Z request minibus to pick up party at GRID - TQ 888 999 up party at GRID - TQ 888 999

V 12Z This is G 02A - wilco - outV 12Z This is G 02A - wilco - out

Assessment End

AUTHENTICATIONAUTHENTICATION

Away of checking that a Station Away of checking that a Station

genuinegenuine

AUTHENTICATIONAUTHENTICATION AlphaAlpha

BravoBravo

CharlieCharlie

DeltaDelta

AUTHENTICATIONAUTHENTICATION

AUTHENTICATE:-AUTHENTICATE:-

ALPHAALPHA

Callsign list shows Sqn No as :MRC 28

378

Station’s Squadron Number

AUTHENTICATIONAUTHENTICATIONAUTHENTICATE:-AUTHENTICATE:-

BRAVOBRAVOMRC 28MRC 28 Callsign list shows Sqn No as :Callsign list shows Sqn No as :

378378

- Sqn number in reverse

878733

Reverse the Number

AUTHENTICATIONAUTHENTICATION

AUTHENTICATE:-AUTHENTICATE:-

CHARLIECHARLIE -- Sqn number Sqn number added toadded to datedate

MRC 16 Callsign list shows Sqn No as :

5 FDate is 12 April

+ 12 = 17

AUTHENTICATIONAUTHENTICATIONAUTHENTICATE:-AUTHENTICATE:-

CHARLIECHARLIE -- Sqn number Sqn number added toadded to datedate

Callsign list shows Sqn No as :

MRL 47

1374 +Date is 30 Date is 30 NovemberNovember

30 = 1404

AUTHENTICATIONAUTHENTICATIONAUTHENTICATE:-AUTHENTICATE:- How will it sound?How will it sound?

MRC 16 This is MRC 56 Authenticate Charlie MRC 16 This is MRC 56 Authenticate Charlie Over.Over.

MRC 56 This is MRC 16 I Authenticate Charlie 17 Over.

MRC 16 This is MRC 56 Correct outMRC 16 This is MRC 56 Correct out

AUTHENTICATIONAUTHENTICATIONAUTHENTICATE:-AUTHENTICATE:-

DELTADELTA -- Callsign Callsign NumberNumber

added to dateadded to date

92 + 21 = 113

Date is 21 JulyDate is 21 July

Callsign MRV92

Group DiscussionGroup Discussion

Learning OutcomesLearning Outcomes

11 Understand how to conduct a Understand how to conduct a Radio Check.Radio Check.

22 Understand how to send a Understand how to send a message.message.

Assessment CriteriaAssessment Criteria

Demonstrate how a Radio Check is Demonstrate how a Radio Check is done..done..

HelpHelp Explain how a simple message is Explain how a simple message is

sent.sent.

HelpHelp