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Chapter 3

Chapter 3. Message Sending. Radio Checks. SIGNAL STRENGTH LOUD The strongest signal GOOD WEAK VERY WEAK The weakest signal FADING Loud to Very Weak. Radio Checks. READABILITY CLEAR Excellent Signal READABLE Satisfactory UNREADABLE Not readable DISTORTED Difficult to hear

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Chapter 3

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  1. Chapter 3 Message Sending

  2. Radio Checks SIGNAL STRENGTH LOUDThe strongest signal GOOD WEAK VERY WEAKThe weakest signal FADING Loud to Very Weak

  3. Radio Checks READABILITY CLEARExcellent Signal READABLESatisfactory UNREADABLE Not readable DISTORTEDDifficult to hear INTERMITTENTGoes on and off INTERFERENCEBackground noise

  4. Radio Checks Radio checks can be with a known station. For example: MRG91 This is MRG84 Radio check - over. MRG84 This is MRG91 Good Readable radio check - over. MRG91 This is MRG84 Loud clear - out

  5. Radio Checks Radio checks can also be obtained generally For example: Alpha Charlie This is MRG84 Radio check - over MRG84 This is MRG77 Good readable radio check - over. MRG77 This is MRG84 Weak readable - out.

  6. Messages The Call MRG 02 This is MRV12 – Over MRV 12 This is MRG 02 – Over The Text MRG 02 This is MRV 12 – Arrange for the mini bus to be sent to this location – Over The Ending MRV 12 This Is MRG 02 - Wilco - Out

  7. Abbreviated CallsignsFixed Stations The Call G 02 This is V12 – Over V 12 This is G 02 – Over The Text G 02 This is V 12 – Arrange for the mini bus to be sent to this location – Over The Ending V 12 This Is G 02 - Wilco - Out

  8. Abbreviated CallsignsMobile Stations The Call G 02A This is V 12Z - message - over. V 12Z This is G 02A - send you message - over. The Text G 02 A This is V12 Z - request minibus to pick up party at GRID - TQ 888 999 - over The Ending V 12Z This is G 02A - wilco - out

  9. Authentication Away of checking that a Station genuine

  10. Authentication • Alpha • Bravo • Charlie • Delta

  11. Authentication AUTHENTICATE:- ALPHA Station’s Squadron Number MRC 28 Callsign list shows Sqn No as : 378

  12. Authentication AUTHENTICATE:- BRAVO MRC 28Callsign list shows Sqn No as : 378 -Sqn number in reverse 873 Reverse the Number

  13. Authentication Authenticate:- CHARLIE- Sqn number added to date MRC 16Callsign list shows Sqn No as : 5 F + 12 = 17 Date is 12 April

  14. Authentication Authenticate:- CHARLIE- Lets do another one! Sqn number added to date MRL 47 Callsign list shows Sqn No as : 1374 + 30 = 1404 Date is 30 November

  15. Authentication Authenticate:- How will it sound? • MRC 16 This is MRC 56 Authenticate Charlie Over. • MRC 56 This is MRC 16 I Authenticate Charlie 17 Over. • MRC 16 This is MRC 56 Correct out

  16. Authentication Authenticate:- DELTA-Callsign Number added to date Callsign MRV 92 Date is 21 July 92 + 21 = 113

  17. Authentication • If the reply is wrong • Unit not in the Callsign list • Do not contact them again • Refer the matter to your Radio Communications Officer

  18. Authentication • Mobile Stations • Use only • Alpha and Delta • Special Stations, Wing/Region HQ • Use Only • Delta

  19. Message Sending End Message Handling

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