Radio Communications

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ACP 31 SECTION SIX – BASIC RADIO COMMUNICATIONS : 

ACP 31 SECTION SIX – BASIC RADIO COMMUNICATIONS INTRODUCTION TO RADIO RADIO PROCEDURE SECURITY RADIO EQUIPMENT SAFETY PRECAUTIONS

INTRODUCTION TO RADIO PROCEDURE : 

INTRODUCTION TO RADIO PROCEDURE

OBJECTIVES : 

OBJECTIVES BY THE END OF THIS LESSON YOU SHOULD BE ABLE TO: DESCRIBE THE BASIC FEATURES OF AN AIR CADET RADIO NETWORK USE THE PHONETIC ALPHABET FOR THE SPELLING OF WORDS AND THE CONVEYANCE OF FIGURES IN A RADIO MESSAGE USE RADIO PROCEDURES TO CONVEY A CLEAR AND BRIEF MESSAGE

INTRODUCTION : 

INTRODUCTION COMMUNIICATION IS VITAL IN A MILITARY ENVIRONMENT THE EFFECTIVE PASSAGE OF INFORMATION CAN DETERMINE THE SUCCESS OR FAILURE OF THE MISSION

THE AIR CADET RADIO NETWORK : 

THE AIR CADET RADIO NETWORK SET UP AFTER WW2 TO TRAIN CADETS ON HF (HIGH FREQUENCY) RADIO EQUIPMENT NETWORK IS EITHER CONTROLLED BY THE NETWORK CONTROL STATION (NCS) OR A FREE NETWORK (NO NCS) NCS ENSURES RADIO DISCIPLINE, PROCEDURES AND SECURITY IS MAINTAINED EITHER MOBILE OR FIXED (BASE STATION)

FREE NETWORK : 

FREE NETWORK

CONTROLLED NETWORK : 

CONTROLLED NETWORK

RADIO PROCEDURE : 

RADIO PROCEDURE CADET RADIO NETWORK ESTABLISHED TO TRAIN CADETS TO USE PROPPER SERVICE RADIOS AND PROCEDURES USED CORRECTLY THE NETWORK CAN GREATLY ASSIST ACTIVITIES USE OF INCORRECT PHRASEOLOGY AND NON-STANDARD PROCEDURES WILL DISRUPT AND CONFUSE

RADIO PROCEDURE : 

RADIO PROCEDURE WHO’S LISTENING IN?

RADIO PROCEDURE : 

RADIO PROCEDURE WHEN SENDING A TRANSMISSION ALWAYS REMEMBER: S – SECURITY A- ACCURACY D – DISCIPLINE

SECURITY : 

SECURITY ALWAYS ASSUME THERE ARE THREE PARTIES IN ANY RADIO TRANSACTION: SENDER RECEIVER INTERCEPTOR THE CADET RADIO NETWORK IS NOT SECURE! YOU CAN BE HEARD.

SECURITY : 

SECURITY THEREFORE TO PROTECT THE SENDER AND RECEIVER’S IDENTITIES FROM AN INTERCEPTOR CALLSIGNS ARE USED. ALSAGER SQUADRON’S CALLSIGN IS MRB24 M – DENOTES A UK CALLSIGN R – DENOTES AN RAF CALLSIGN B – DENOTES GEOGRAPHIC LOCATION 24 – DENOTES 2493 (ALSAGER) SQN MOBILE CALLSIGNS CARRY M1,M2,M3 ETC FOR EACH HANDSET

AUTHENTICATION : 

AUTHENTICATION AUTHENTICATIONS OCCUR WHEN YOU NEED TO VERIFY THE AUTHORITY OF AN UNKNOWN CALLISGN AND COME IN FOUR FORMS INCREASING IN DIFFICULCY FROM ALPHA TO DELTA ALPHA – CALLSIGN MUST GIVE SQN NUMBER BRAVO – CALLSIGN MUST GIVE SQN NUMBER BACKWARDS CHARLIE – CALLSIGN MUST GIVE SQN NUMBER PLUS TODAYS DATE DELTA – CALLSIGN MUST GIVE HQ NUMBER PLUS TODAYS DATE

AUTHENTICATION : 

AUTHENTICATION UNKNOWN CALLSIGN THIS IS MIKE ROMEO BRAVO TWO FOUR AUTHENTICATE ALPHA OVER. HELLO MIKE ROMEO BRAVO TWO FOUR, THIS IS MIKE ROMEO BRAVO THREE ZERO “TWO FOUR NINER THREE” OVER HELLO MIKE ROMEO BRAVO THREE ZERO, THIS IS MIKE ROMEO BRAVO TWO FOUR CORRECT OUT

AUTHENTICATION : 

AUTHENTICATION UNKNOWN CALLSIGN THIS IS MIKE ROMEO BRAVO TWO FOUR AUTHENTICATE BRAVO OVER. HELLO MIKE ROMEO BRAVO TWO FOUR THIS IS MIKE ROMEO BRAVO THREE ZERO “THREE NINER FOUR TWO” OVER HELLO MIKE ROMEO BRAVO THREE ZERO, THIS IS MIKE ROMEO BRAVO TWO FOUR CORRECT OUT

AUTHENTICATION : 

AUTHENTICATION UNKNOWN CALLSIGN THIS IS MIKE ROMEO BRAVO TWO FOUR AUTHENTICATE CHARLIE OVER. HELLO MIKE ROMEO BRAVO TWO FOUR THIS IS MIKE ROMEO BRAVO THREE ZERO “TWO FOUR NINER SIX” OVER. HELLO MIKE ROMEO BRAVO THREE ZERO, THIS IS MIKE ROMEO BRAVO TWO FOUR CORRECT OUT

AUTHENTICATION : 

AUTHENTICATION UNKNOWN CALLSIGN THIS IS MIKE ROMEO BRAVO TWO FOUR AUTHENTICATE DELTA OVER. HELLO MIKE ROMEO BRAVO TWO FOUR, THIS IS MIKE ROMEO BRAVO THREE ZERO “TWO FOUR” OVER. HELLO MIKE ROMEO BRAVO THREE ZERO, THIS IS MIKE ROMEO BRAVO TWO FOUR CORRECT OUT

PRO-WORDS : 

PRO-WORDS PRO-WORDS ARE A STANDARDISED SET OF PHRASES WHICH INDICATE TO SENDER AND RECEIVER WHAT IS MEANT. THIS IS – INDICATES CALLSIGN OF SENDER TO FOLLOW OVER – END OF TRANSMISSION, REPLY EXPECTED OUT – END OF TRANSMISSION, NO REPLY EXPECTED WAIT OUT – TRANSMISSION RECEIVED, REPLY TO FOLLOW WILCO – TRANSMISSION UNDERSTOOD, WILL COMPLY

PRO-WORDS : 

PRO-WORDS ROGER – TRANSMISSION RECEIVED SAY AGAIN – REPEAT ALL OR PART OF LAST MESSAGE MESSAGE – FOLLOWING TRANSMISSION WILL NEED WRITING DOWN FIGURES – USED BEFORE SENDING DIGITS GRID – USED BEFORE SENDING MAP REFERENCE RADIO CHECK – REPORT HOW TRANSMISSION IS RECEIVED

PRO-WORDS : 

PRO-WORDS TIME – USED BEFORE SENDING TIME (24 HOUR CLOCK) UNKNOWN STATION – USED WHEN ADDRESSING UNIDENTIFIED NET USERS WRONG – LAST TRANSMISSION INCORRECT CORRECTION – CORRECTION OF LAST TRANSMISSION I SPELL – USED WHEN SPELLING WORDS USING PHONETIC ALPHABET

ACCURACY : 

ACCURACY TRANSMISSIONS MUST BE AS ACCURATE AS POSSIBLE. WHEN SENDING A COMPLEX MESSAGE ,WRITE IT DOWN FIRST. DO NOT THINK ON THE NET. BEFORE TRANSMITTING LISTEN FOR INTERFERENCE BE FAMILIAR WITH RADIO EQUIPMENT BEFORE TRANSMITTING

ACCURACY : 

ACCURACY DO NOT TALK TOO CLOSE TO THE MICROPHONE 5CM (2”) IS THE BEST DISTANCE DO NOT HOLD THE MICROPHONE BOOM DO NOT TOUCH THE MICROPHONE – THIS WILL CAUSE SEVERE DISTORTION DO NOT TURN YOUR HEAD AWAY WHILST TALKING PRESS THE TRANSMIT BUTTON A SECOND BEFORE, AND KEEP IT DEPRESSED A SECOND AFTER YOU SPEAK

ACCURACY : 

ACCURACY

ACCURACY : 

ACCURACY SPEAKING ON THE RADIO IS DIFFERENT TO SPEAKING NORMALLY REMEMBER: R – RYTHM – ADOPT A NATURAL RYTHM S – SPEED – SPEAK SLOWER THAN NORMAL V -VOLUME – SPEAK SLIGHTLY LOUDER THAN NORMAL P – PITCH – SHOULD BE SLIGHTLY HIGHER THAN USUAL

PHONETIC ALPHABET : 

PHONETIC ALPHABET A – ALPHA B – BRAVO C – CHARLIE D – DELTA E – ECHO F – FOXTROT G – GOLF H – HOTEL I – INDIA J – JULIET K – KILO L - LIMA M- MIKE N – NOVEMBER O – OSCAR P – PAPA Q – QUEBEC R – ROMEO S – SIERRA T – TANGO U – UNIFORM V – VICTOR W – WHISKY X – X-RAY Y – YANKEE Z - ZULU WHEN SENDING CODES OR LOCATIONS WHICH ARE DIFFICULT TO PRONOUNCE SPELL THE WORD OUT USING THE PHONETIC ALPHABET (OPPOSITE) AFTER THE PRO-WORD “I SPELL”

DISCPLINE : 

DISCPLINE ALWAYS USE CALLSIGNS USE AUTHORISED CODENAMES AUTHENTICATE UNKNOWN STATIONS USE VEILED SPEECH TO CONCEAL SENSITIVE INFORMATION KEEP YOUR TEMPER NEVER X USE FOUL LANGUAGE X USE NAMES OR NICKNAMES X USE SLANG OR JARGON X MENTION AIRCRAFT TYPES X MENTION WEAPONS OR AMMUNITION X TRANSMIT UNIT LOCATIONS X USE RANKS X VIOLATE RADIO SILENCE

TEST QUESTIONS : 

TEST QUESTIONS WHAT DOES THE TERM ‘FREE NETWORK’ MEAN? YOU DON’T PAY TO USE IT YOU CAN OPERATE WITHOUT PERMISSION FROM NCS NETWORK IS READY TO USE ALL OPERATORS WILL BE NAKED

ANSWER : 

ANSWER B – YOU CAN OPERATE WITHOUT PERMISSION FROM NCS

TEST QUESTIONS : 

TEST QUESTIONS WHAT IS THE NCS? NATIONAL COMPUTER SYSTEM NORMAL CALL SIGN NEWEST COMMUNICATION SITE NETWORK CONTROL STATION

ANSWER : 

ANSWER D – NETWORK CONTROL STATION

TEST QUESTIONS : 

TEST QUESTIONS WHAT DOES THE ACRONYM ‘SAD’ STAND FOR? SECURITY ACCURACY DISCIPLINE SPEAK ALOUD DEMONSTRATION SEMAPHORE ACCURACY DISTANCE SANDWICH ASSEMBLY DEPOT

ANSWER : 

ANSWER A – SECURITY ACCURACY DISCIPLINE

TEST QUESTIONS : 

TEST QUESTIONS WHAT DOES THE ACRONYM RSVP STAND FOR? RESPOND S’IL VOUS PLAIT RAPID SPEED VOICE PROGRAMME RYTHM SPEED VOLUME PITCH RECOMMENDED SERVICE VOICE PROCEDURE

ANSWER : 

ANSWER C – RYTHM SPEED VOLUME PITCH

TEST QUESTIONS : 

TEST QUESTIONS WHAT IS THE OPTIMUM DISTANCE FROM THE MICROPHONE TO SPEAK FROM? 1 CM (.25 INCH) 5 CM (2 INCHES) 7.5 CM (3 INCHES) 10 CM (4 INCHES)

ANSWER : 

ANSWER B – 5 CM (TWO INCHES)

TEST QUESTIONS : 

TEST QUESTIONS WHICH OF THE FOLLOWING SHOULD NOT BE SAID OVER THE RADIO? THE TIME THE CALLSIGN CODENAMES RANKS

ANSWER : 

ANSWER D - RANKS

TEST QUESTIONS : 

TEST QUESTIONS ALSAGER SQUADRON’S CALLSIGN IS MRB 24, WHAT DOES THE ‘M’ INDICATE? MILITARY ROYAL AIR FORCE UNITED KINGDOM GEOGRAPHIC LOCATION

ANSWER : 

ANSWER C – UNITED KINGDOM

TEST QUESTIONS : 

TEST QUESTIONS ALSAGER SQUADRON’S CALLSIGN IS MRB 24, WHAT DOES THE ‘R’ INDICATE? MILITARY ROYAL AIR FORCE GEOGRAPHIC LOCATION CADET FREQUENCY

ANSWER : 

ANSWER B – ROYAL AIR FORCE

TEST QUESTIONS : 

TEST QUESTIONS ALSAGER SQUADRON’S CALLSIGN IS MRB 24, WHAT DOES THE ‘B’ INDICATE? MILITARY ROYAL AIR FORCE GEOGRAPHIC LOCATION CADET FREQUENCY

ANSWER : 

ANSWER C – GEOGRPHIC LOCATION

TEST QUESTIONS : 

TEST QUESTIONS ALSAGER SQUADRON’S CALLSIGN IS MRB 24, WHAT DOES THE ‘24’ INDICATE? MILITARY ROYAL AIR FORCE GEOGRAPHIC LOCATION ALSAGER SQUADRON

ANSWER : 

ANSWER D – ALSAGER SQUADRON

TEST QUESTIONS : 

TEST QUESTIONS SPELL YOUR SURNAME USING THE PHONETIC ALPHABET

TEST QUESTIONS : 

TEST QUESTIONS YOU ARE ASKED TO AUTHENTICATE ALPHA WHAT WOULD BE THE CORRECT RESPONSE? TWO FOUR TWO FOUR NINER THREE MIKE ROMEO BRAVO TWO FOUR FOUR TWO NINER THREE

ANSWER : 

ANSWER B – TWO FOUR NINER THREE

TEST QUESTIONS : 

TEST QUESTIONS YOU ARE AKSED TO AUTHENTICATE BRAVO THE WHAT WOULD BE THE CORRECT RESPONSE? TWO FOUR NINER THREE TWO FOUR NINER THREE THREE NINER FOUR TWO

ANSWER : 

ANSWER D – THREE NINER FOUR TWO

TEST QUESTIONS : 

TEST QUESTIONS YOU ARE ASKED TO AUTHENTICATE CHARLIE, IT IS THE TENTH OF NOVEMBER, WHAT WOULD BE THE CORRECT RESPONSE? TWO FOUR ONE ZERO ONE ONE TWO FOUR NOVEMBER ONE ZERO TWO FIVE ZERO THREE TWO NINER NINER SEVEN

ANSWER : 

ANSWER C – TWO FIVE ZERO THREE

TEST QUESTIONS : 

TEST QUESTIONS YOU ARE ASKED TO AUTHENTICATE DELTA, IT IS THE FOURTEENTH OF OCTOBER, WHAT WOULD BE THE CORRECT RESPONSE? TWO ONE TWO THREE TWO FIVE TWO NINE

ANSWER : 

ANSWER C – TWO FIVE

TEST QUESTIONS : 

TEST QUESTIONS WHEN WOULD YOU USE THE PRO-WORD ‘OVER’? WHEN BEGINNING A TRANSMISSION WHEN ENDING A TRANSMISSION AND EXPECTING A REPLY WHEN ENDING A TRANSMISSION AND NOT EXPECTING A REPLY

ANSWER : 

ANSWER B – WHEN ENDING A TRANSMISSION AND EXPECTING A REPLY

TEST QUESTIONS : 

TEST QUESTIONS WHEN WOULD THE PRO-WORD ‘I SPELL’ BE USED? WHEN ABOUT TO SEND A COMPLEX MESSAGE WHEN ABOUT TO SEND NUMBERS WHEN ABOUT TO SPELL A WORD WHEN YOU ARE A SMELLY DYSLEXIC

ANSWER : 

ANSWER C – WHEN ABOUT TO SPELL A WORD

TEST QUESTIONS : 

TEST QUESTIONS YOU ARE ABOUT TO SEND A GRID REFERENCE OVER THE NETWORK WHICH PRO-WORD SHOULD YOU USE? I SPELL MAP FIGURES GRID

ANSWER : 

ANSWER D - GRID

TEST QUESTIONS : 

TEST QUESTIONS YOU ARE ABOUT TO SEND A DIGITAL CODE OVER THE NETWORK WHICH PRO-WORD SHOULD YOU USE? I SPELL NUMBERS FIGURES DIGITS

ANSWER : 

ANSWER C - FIGURES

TEST QUESTIONS : 

TEST QUESTIONS YOU NEED THE LAST TRANSMISSION REPEATING WHICH PRO-WORD SHOULD YOU USE? REPEAT SAY AGAIN PARDON YOU F*****G WHAT!?

ANSWER : 

ANSWER B – SAY AGAIN

TEST QUESTIONS : 

TEST QUESTIONS TO SHOW THAT YOU HAVE UNDERSTOOD THE LAST TRANSMISSION YOU SHOULD USE WHICH PRO-WORD? ACKNOWLEDGED AFFIRMATIVE ROGER WILCO

ANSWER : 

ANSWER C - ROGER

TEST QUESTIONS : 

TEST QUESTIONS IN THE LAST TRANSMISSION YOU RECEIVED INSTRUCTIONS WERE GIVEN, WHICH PRO-WORD SHOULD YOU USE IN YOUR REPLY? ROGER NO PROBLEM AFFIRMATIVE WILCO

ANSWER : 

ANSWER D - WILCO

RADIO EQUIPMENT : 

RADIO EQUIPMENT

OBJECTIVES : 

OBJECTIVES BY THE END OF THIS LESSON YOU SHOULD BE ABLE TO: DESCRIBE THE FUNCTION AND CHARACTERISTICS OF VARIOUS TYPES OF RADIO EQUIPMENT USED WITHIN AIR CADET NETWORKS EXPLAIN HOW THE FREQUENCY OF OPERATION OF RADIO EQUIPMENT CAN LIMIT ITS USE EXPLAIN HOW AN AERIAL CAN AFFECT THE RANGE OF RADIO TRANSMISSIONS.

RADIO EQUIPMENT : 

RADIO EQUIPMENT THE RADIO EQUIPMENT USED BY THE ATC FALLS INTO THREE DIFFERENT TYPES: FIXED UNITS VEHICLE UNITS PORTABLE UNITS

BASE STATIONS : 

BASE STATIONS FIXED INSTALLATIONS AT SQUADRON OR UNIT HQS ARE KNOWN AS BASE STATIONS BASE STATION EQUIPMENT IS CHOSEN FOR ITS RELIABILITY, STABILITY AND POWER OUTPUT THE RANGE FOR UHF OR VHF BASE STATIONS MAY EXCEED 50 KM

VEHICLE UNITS : 

VEHICLE UNITS VEHICLE EQUIPMENT MUST BE RELIABLE AND ROBUST MUST BE EFFICIENT AS IT IS USUALLY POWERED FROM THE VEHICLE’S BATTERY EFFECTIVE RANGE OF UP TO 30KM

PORTABLE UNITS : 

PORTABLE UNITS EITHER BACK-PACK OR HAND PORTABLE. MUST BE RELIEBLE AND ROBUST. BACK PACK RADIO RANGE OF 10-15KM HAND PORTABLE RADIO RANGE USUALLY LINE OF SIGHT (1-5 KM)

DUTY CYCLE : 

DUTY CYCLE BATTERY LIFE IS A CRUCIAL FACTOR, ESPECIALLY WHEN DEPLOYED IN THE FIELD. THEREFORE A DUTY CYCLE MUST BE ADHERED TO, TO PRESERVE BATTERY LIFE. A TYPICAL DUTY CYCLE WOULD BE 5/10/85% MEANING TRANSMIT FOR 5% RECEIVE FOR 10% AND ON STANDBY FOR 85%. THIS IS BECAUSE TRANSMITTING USES MORE POWER THAN RECEIVING OR STANDBY

OPERATING RANGE : 

OPERATING RANGE THE EFFECTIVE RANGE OF A RADIO DEPENDS UPON A COMBINATION OF SEVERAL FACTORS INCLUDING: THE FREQUENCY BAND IN USE. THE POWER OUTPUT OF THE TRANSMITTER. THE SENSITIVITY OF THE RECEIVER. THE EFFICIENCY OF THE AERIAL SYSTEM. THE PREVAILING ATMOSPHERIC CONDITIONS. THE POSITION OF THE ANNTENA.

ANNTANAE : 

ANNTANAE ANNTANAE ARE USED TO SEND AND RECEIVE RADIO SIGNALS AND CAN GREATLY EFFECT RANGE AND READABLITY OF COMMUNICATIONS. WHERE POSSIBLE THE ANNTENA SHOULD BE POSITIONED IN AS HIGH A PLACE AS IS SAFE. ERECTING A MOBILE ANNTENA SHOULD BE DONE WITH CARE, AS HIGH WINDS CAN FELL THEM AND GUY ROPES CAN TRIP.

FREQUENCIES : 

FREQUENCIES THE AIR CADET ORGANISATION HAS BEEN ALLOCATED CERTAIN FREQUENCIES FOR USE WHEN TRAINING. THEY CONSIST OF VHF (VERY HIGH FREQUENCY) AND UHF (ULTRA HIGH FREQUENCY) FOR MOBILE AND HAND HELD RADIOS UHF AND VHF FREQUENCIES HAVE A RANGE EQUIVALENT TO LINE OF SIGHT (LOS) AND ARE THE MOST COMMONLY USED BY CADETS ON TRAINING EXCERCISES.

RADIO CHECKS : 

RADIO CHECKS WHEN A STATION FIRST SWITCHES ON OR JOINS A NETWORK IT IS NECESSARY TO ESTABLISH THAT COMMUNICATIONS ARE SATISFACTORY OPERATOR SHOULD CARRY OUT A RADIO CHECK TO ASCERTAIN THE STRENGTH AND READABILITY OF THE SIGNAL THE REPLY CAN BE ANY COMBINATION OR STRENGTH AND READABILITY RADIO CHECKS SHOULD BE CARRIED OUT AFTER MOVING LOCATION OR CHANGING BATTERIES OR ANTENNAE.

SIGNAL STRENGTH : 

SIGNAL STRENGTH STRENGTH IS MEASURE IN FIVE LEVELS DETAILED BELOW: LOUD (STRONGEST) GOOD WEAK VERY WEAK FADING (WEAKEST)

READABILITY : 

READABILITY READABILITY IS MEASURED IN SIX LEVELS DETAILED BELOW: CLEAR READABLE UNREADABLE DISTORTED INTERMITTENT INTERFERENCE

RADIO CHECKS : 

RADIO CHECKS RADIO CHECKS CAN BE CARRIED OUT WITH A SPECIFIC CALLSIGN OR WITH ALL USERS ON THAT NETWORK BY ISSUING AN ‘ALPHA CHARLIE’ (ALL CALLSIGNS) CALL: “ALPHA CHARLIE ALPHA CHARLIE THIS IS MRB24 M1 RADIO CHECK OVER” STATION WOULD THEN REPLY ALPHA-NUMERICALLY (M2 THEN M3 THEN M4 ETC) TO GIVE THEIR REPLIES. IF THERE IS NO REPLY THE MESSAGE “NOTHING HEARD OUT” WOULD BE GIVEN.

MESSAGES : 

MESSAGES MESSAGES SHOULD BE AS SHORT AS POSSIBLE AND CONSIST OF THREE PARTS: THE CALL THE TEXT THE ENDING

THE CALL : 

THE CALL THE CALL IS ALWAYS AT THE START OF A MESSAGE AND IS IN THE FOLLOWING FORMAT: MRG 02 M1 THIS IS MRV 12 OVER. MRV 12 THIS IS MRG 02 M1 SEND OVER

THE TEXT : 

THE TEXT THE TEXT - IS THE PART OF A MESSAGE WHICH CONVEYS THE MEANING OR THE INSTRUCTIONS. IT MAY TAKE MORE THAN ONE TRANSMISSION TO PASS ON THE ENTIRE MESSAGE MRG 02 M1 THIS IS MRV 12 MOVE TO THIS LOCATION AND REPORT ON ARRIVAL OVER.

THE ENDING : 

THE ENDING THE ENDING IS USED TO SIGNIFY THAT THE MESSAGE HAS BEEN UNDERSTOOD AND ACTION WILL BE TAKEN IF NECESSARY. AS THE NAME IMPLIES IT IS THE END OF THAT MESSAGE. FOR EXAMPLE: MRV 12 THIS IS MRG 02 M1 WILCO OUT

MESSAGES : 

MESSAGES MRG 02 M1 THIS IS MRV 12 OVER. MRV 12 THIS IS MRG 02 M1 SEND OVER MRG 02 M1 THIS IS MRV 12 MOVE TO THIS LOCATION AND REPORT ON ARRIVAL OVER. MRV 12 THIS IS MRG 02 M1 WILCO OUT

MESSAGES : 

MESSAGES IN THIS EXAMPLE, THE NETWORK CONTROL STATION MRV12 INSTRUCTED A MOBILE UNIT MRG02 M1 TO REPORT TO HIS LOCATION. THE MOBILE UNIT REPLIES THAT THE MESSAGE HAS BEEN RECEIVED AND UNDERSTOOD AND THAT THEY ARE COMPLYING WITH THE INSTRUCTIONS.

CARE OF RADIO EQUIPMENT : 

CARE OF RADIO EQUIPMENT RADIO EQUIPMENT IS EXPENSIVE TO BUY AND MAINTAIN. YOU SHOULD TAKE CARE OF ANY EQUIPMENT ENTRUSTED TO YOU. A FEW POINTERS ARE SET ON THE NEXT PAGE

CARE OF RADIO EQUIPMENT : 

CARE OF RADIO EQUIPMENT ALWAYS SWITCH OFF AFTER USE KEEP DRY AND CLEAN TURN OFF ADDITIONAL RADIOS AT THE SAME LOCATION ON THE SAME CHANNEL STORE IN A SAFE LOCATION NEVER X HOLD A SET BY THE AERIAL X LEAVE A RADIO UNATTENDED X ALTER THE SETTINGS OF THE CONTROLS UNLESS INSTRUCTED X TRANSMIT CLOSE TO ANOTHER RADIO

SAFE RADIO USE : 

SAFE RADIO USE

OBJECTIVES : 

OBJECTIVES BY THE END OF THIS LESSON YOU SHOULD BE ABLE TO: EXPLAIN THE SAFE CARE AND HANDLING OF RADIO BATTERIES IDENTIFY SAFETY PROCEDURES USED WHEN USING PORTABLE RADIO EQUIPMENT IDENTIFY AND DESCRIBE THE BASIC HEALTH AND SAFETY ISSUES ASSOCIATED WITH RADIO OPERATIONS

SAFETY PRECAUTIONS : 

SAFETY PRECAUTIONS ALWAYS COVER BATTERY TERMINALS IN TRANSIT OR WHEN NOT IN USE. KEEP LEAD ACID BATTERIES UPRIGHT. CHARGE WITH THE CORRECT TYPE OF CHARGER. NEVER X CHARGE LEAD ACID BATTERIES IN A CONFINED SPACE. X CARRY LOOSE BATTERIES IN POCKETS OR BAGS. X SHORT THE TERMINALS TOGETHER.

SAFETY PRECAUTIONS : 

SAFETY PRECAUTIONS THE TYPE OF BATTERIES USED FOR HAND HELD AND MOBILE EQUIPMENTS REQUIRE A HIGH CURRENT CAPACITY IN VIEW OF THIS, WHEN THEY ARE NOT ATTACHED TO THE RADIO THEY SHOULD BE HANDLED WITH CARE

TEST QUESTIONS : 

TEST QUESTIONS WHICH OF THE FOLLOWING SHOULD NOT BE DONE WHEN HANDLING RADIO BATTERIES? KEEP THEM REGULARLY CHARGED COVER THE TERMINALS WHEN NOT IN USE SHORT THE TERMINALS TOGETHER TO CHECK THEY ARE WORKING CARRY THEM AROUND IN YOUR POCKET

ANSWER : 

ANSWER C AND D

TEST QUESTIONS : 

TEST QUESTIONS WHY SHOULD YOU BE CAREFUL WHEN USING A MAST TYPE ANNTENNA? THEY ARE EXTREMELY HEAVY THEY ARE SHARP THEY CAN EASILY FALL OVER THERE IS NO NEED TO BE CAREFUL

ANSWER : 

ANSWER C – THEY CAN EASILY FALL OVER

ANY QUESTIONS? : 

ANY QUESTIONS?

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