Fundamentals of Naval Science

Objectives:
1. Understand the importance of security when communicating with radiotelephone.
2. Understand the purposes and differences between a directed and free net.
3. Understand the prowords used to report
signal strength and readability.

Objectives:
5.Understand the proper procedure for
conducting and responding to radio checks
6. Understand the differences between
delayed and immediate executive methods for transmitting tactical signals.
7. Understand the procedure for transmitting a signal using the immediate executive format.

Lesson Background
- Preparation for LANTPAT.
- Only “real-time” mean of communication.
- No transmission security.
- Potential for poor communications
- faulty equipment
- poor operator performance.

Security
Short and concise transmissions
Radiowaves X enemy interception
With this in mind:
- No transmission will be made which has not
been approved by proper authority.

Security (cont’d)
- Violation of radio silence.
- Unofficial conversation between operators.
- Transmitting on a directed net without
permission.
- Excessive tuning and testing.
- Transmitting the operator’s personal sign
or name.
The following practices are specifically
forbidden:

Security (cont’d)
The following practices are specifically
forbidden (cont’d):
- Use of other than authorized prowords.
- Unauthorized use of plain language in place
of applicable prowords or operating signals.

Security (cont’d)
The following practices are specifically forbidden (cont’d):
- Unauthorized use of plain language.

Security
(cont’d)
The following practices are specifically
forbidden (cont’d):
- Linkage or compromise of classified call signs and address groups by plain language disclosures or association with unclassified call signs.
- Profane, indecent, or obscene language.

Security (cont’d)
The following practices are to be avoided:
- Use of excessive transmitting power.
- Excessive time consumed in tuning, changing
frequency, or adjusting equipment.
- Transmitting at speeds beyond the capabilities
of receiving operators.

Types of Nets
Net Control Station (NCS)
Free
Directed

COMMUNICATIONS LOG
YP :
Date :
COMMUNICATIONS LOG
All incoming and outgoing transmissions
are recorded in the Communications Log

Radio Watches
Guard - Continuous receiver watch with transmitter ready for immediate use. Complete log is kept.
Cover - Continuous receiver watch. Transmitter tuned and available. Complete Log is kept.
Copy - Continuous receiver watch, with a complete log.
Listen - Continuous receiver watch, log is optional.

Phonetic Alphabet
Alfa Bravo Charlie Delta
Echo Foxtrot Golf Hotel
India Juliet Kilo Lima
Mike November Oscar Papa
Quebec Romeo Sierra Tango
Uniform Victor Whiskey X-ray Yankee Zulu

Prowords
Pronounceable words or phrases which have been assigned meaning for the purpose of expediting radio conversations.

Prowords
THIS IS Preface to your call sign
ROGER Last transmission received OK
OVER I’m done, go ahead
OUT I’m done, bye
WAIT I will be back in a few seconds
SAY AGAIN Say that again
CORRECTION Oops! I really meant to say
WILCO ROGER and I will comply
AFFIRMATIVE Yes

General Procedures
1. Listen before transmitting.
2. Speak clearly and distinctly.
3. Speak slowly.
4. Avoid extremes of pitch.
5. Be natural.
6. Use standard pronunciation.
7. Speak in a moderately strong voice.
8. Keep correct distance between lips and
microphone.

General Procedures
9. Shield your microphone.
10. Keep the volume of a handset earpiece low.
11. Keep speaker volumes moderate.
12. Give an accurate evaluation for a radio
check.
13. Pause occasionally.
14. Adhere strictly to prescribed procedures.

Call Signs
- Use International Call Sign in foreign ports.
- Use name of ship in U.S. ports.
- Local port authorities are identified by the port name and the word CONTROL
(“Annapolis Harbor Control”)

Establishing Communications
-Full call signs are used when establishing a net.
- To establish a net, the Net Control Station calls all stations.
- Stations answer in alphabetical order of the first letter/word of their call signs.

RADIO CHECKS
Allow units to report on the signal strength and readability of radio transmissions.

RADIO CHECKS
LOUD
GOOD
WEAK
VERY WEAK
FADING
SIGNAL STRENGTH
READABILITY
First part of
the report
CLEAR
READABLE
UNREADABLE
DISTORTED
W/INTERFERENCE
INTERMITTENT
Second part of
the report

RADIO CHECK
A1M this is AB, over.
This is A1M, roger, over.
This is AB, roger, out.
LOUD AND CLEAR

RADIO CHECK
A1M this is AB, over.
This is A1M, read you weak and
unreadable, over.
This is AB, roger out.
NOT LOUD AND CLEAR

AI this is AB, Execute to follow
corpen 420, Disregard this
transmission, out.
WRONG
RIGHT
AI this is AB, Execute to follow
corpen 420, oops, um, uhh, Bye!

AI this is AB, NEGAT Corpen
Port 180. Break, Execute to
follow Corpen Port 180, over.
AI this is AB, Corpen Port 180,
Over.
WRONG SIGNAL
CANCELED SIGNAL
WITH CORRECTION

Acknowledgments
Only if the Commanding Officer heard, understood, and directed acknowledgment of a message may the proword WILCO be used.
ROGER and WILCO are not to be used together.

Tactical Signals
Delayed Executive
Immediate Executive

Delayed Executive
“RAMAGE, this is HAYLER. Execute to follow, Corpen starboard 130. Over”
“RAMAGE this is HAYLER. Corpen starboard, standby - execute. Over”
(then, later)

Immediate Executive
RAMAGE, this is HAYLER. Immediate execute, Speed 6, I say again, Speed 6. Standby…Execute. Over.”

Practical Exercise 3
PE
RT PE MTP