7½ unit Stop/Start Code

Advances Ship/Shore Automatic Telegraph System [ASSATA] [NSR 7385]

Bias Distortion

Characteristic Distortion

Chirpsounder

Communication Receivers

Communication Satellites from earlier on !

Continuous Wave

DATA Communications in THREE PARTS

Emission Designators

Facsimile

Fibre Optic Communications in THREE PARTS

Fortuitous Distortion

Frequency Division Multiplexing

Frequency Shift Telegraphy

Keying Polarity and Arrangement

Landline

LF and HF Progagation

Lincomplex

Line Characteristics

Line Details

Line Numbering

Local HF Communications – Portland and Clyde

Long Haul Communications

Methods of Keying

Minimum Shift Keying

Modern Aerials

Modes of Emission

Modulation Methods

Murray Code

Mutiplexing

Naval Communications Requirement

NAVMUF

Oversea – Internal

Pilot Flag Support System [PFSS]

Propagation of Radio Waves

Protected Codes

Requirement for SSB Operation

Review of R.A.T.T.

RF Power Amplifiers

Satellite Communications

Speed Distortion

Station Groups and COMMCENS – Many subjects including TARE, AMRAD, ADX, TASS, TELEX  in TWO PARTS

Statistical Time Division Multiplexing

System Engineering – Many subjects in TWO PARTS

Telecommunications Services Provided [TSP] Introduction - see below in many a case !

Telegraph and Data Message Generator and Analyser

Telegraphic Distortion

Telegraphic Speed

The Naval Shore Telecommunications Network

Time Division Multiplexing

Transmission Media

Tropospheric Scatter Links

TSP – 10 MHz Convention

TSP – Broadcast Designation and Multi Channeling

TSP – Channel Availability and Receipt Broadcast [CARB]

TSP – Channel Identification

TSP – Common User Channels

TSP – Conference and Special Handling Channels

TSP – Contingency Rear Links [CRL]

TSP – DCN Patches

TSP – DCN Services

TSP – Emergency Communications

TSP – Exclusive User Channels

TSP – Exercise Broadcast

TSP – Facilities Available on Inter-Theatre Trunks

TSP – Facsimile

TSP – HF Components

TSP – INMARSAT

TSP – Insecure Speech

TSP – Inter-Theatre Services 0000-0999

TSP – Intra UK/Germany Telegraph Circuits 2000-2999

TSP – LF Components

TSP – Maritime Rear Link HF

TSP – Maritime Satellite Services FM: 9000-9999 CDMA: 8000-8999

TSP – Naval Nuclear Weapon Accident Communications

TSP – Priorities

TSP – Report Suffixes

TSP – RN Local Services

TSP – RN Satellite Services

TSP – RN Services

TSP – Satellite Broadcasts

TSP – Satellite Rear Links

TSP – Satellite Ship/Shore

TSP – Secure Speech Services 1000-1999

TSP – Ship Broadcasts

TSP – Ship/Shore HF

TSP – Ship/Shore Procedure

TSP – Submarine Accident Communications

TSP – Submarine Communications

TSP – UHF Satcoms

UK Maritime Coastal Communications System [UKMACCS]

United Kingdom – Internal

Van Duuran Code

Voice

7⅓, yes, SEVEN and  ONE THIRD Code ?