History Overview - 547 Signal Troop


See  Pronto in South Vietnam 1962-1972, Chapter 5 - Part 1


547 Sig Tp Unoffical Logo used in 1968

The role of 547 Signal Troop was to provide signals intelligence support to 1 ATF.  The troop was raised as a deployable element of the 7th Signal Regiment (located at Cabarlah, Queensland) specifically for Vietnam.   The organisation of the troop evolved during the conflict and included sections specialising in search and interception, analysis, airborne radio direction finding and the operation of experimental high frequency direction finding equipment.

Commanded by a Captain or Major, the troop had a strength of 45 personnel for the majority of its deployment to South Vietnam.  The bulk of the unit was made of Royal Australian Signals (RASigs) Corps personnel, with a small number of Australian Intelligence Corps personnel.  The work of the troop was marked with great secrecy and very few individuals outside it knew of its real role or could access its reporting.  The work of the troop first became widely known in 1993, when the official Australian history of the Vietnam conflict discussed its role in the lead up to the Battle of Long Tan on 18 August 1966. The troop became operational on 24 June 1966 and ceased operations on 13 December 1971.

547 Sig Tp is still part of 7th Signal Regiment (7 Sig Regt).

7th Signal Regiment Colour Patch

7 Sig Regt provides tactical Electronic Warfare support to the Army in times of peace, crisis, and conflict on any operation anywhere in the world. The unit does this through listening to adversarial communication systems or, to a limited extent, disrupting those communication systems to protect our own forces on the battlefield. 

The unit operates a large range of complex, state-of-the-art electronic intercept and monitoring equipment in the tactical environment. This can either be from a building inside a protected base, in the back of an armoured vehicle or on foot alongside combat elements.

7 Sig Regt is part of the 6th Brigade (6 Bde) which was re-raised on 1st March 2010 to oversee the Army's command support and intelligence, surveillance, target acquisition and reconnaissance (CS & ISTAR) units.

In recent years, 7 Sig Regt has had elements serve on active duty in Bougainville, East Timor, Solomon Islands, Iraq, and Afghanistan.

View photos of 547 Signal Troop in South Vietnam:

Album 1  | Album 2  |  Album 3  | Album 4  |  Album 5  |   Album 6


Click  The Story of 547 Signal Troop in South Vietnam 1966 to 1972 (51MB PDF)
By Robert (Bob) Hartley AM and Barry Hampstead

vertical barClick   Annex A - Comint Support Instruction (PDF)
Click   Annex B - The Early Days in an Operator Signals Duties (PDF)
Click   Annex C - Equipment (PDF) 
Click   Annex D - Battle of Long Tan Intelligence Background | 547 Sig Tp  (PDF)
Click   Annex E - USAF ARDF (PDF)
Click   Annex F - Caption Richard's Tape  (PDF)
Click   Annex G - New Estabishment for 547 Sig Tp (PDF)
Click   Annex H - US Army ARDF (PDF)
Click   Annex I   - Australian ARDF  (PDF)
Click         
Annex I - Appendix 1 | Australian ARDF, Technical Memorandum  (PDF)
Click       Annex I - Appendix 2 | Australian ARDF, Project Thorough Reports  (PDF)
Click       Annex I - Appendix 3 | Australian ARDF, Shellfest Seventy Report  (PDF)
Click   Annex J - The Activities of 274 and 275 VC Regiments during Tet  Offensive  
Click   Annex K - Of Shush Missions | 547 Sig Tp  (PDF)
Click   Annex L - SSL (PDF)
Click   Annex M - 547 Sig Tp ACV Callsign 85D  (PDF)
Click   Annex N - The Battle of Binh Ba  (PDF)
Click   Annex O - FSB Colorado | Letter of Appreciation  (PDF)
Click   Annex P - Jim Danskin | Baron v Brass  (PDF)
Click   Annex Q - Jack Fenton | A normal day at Nui Dat (PDF)
Click   Annex R - Lt Ron Estes, US Army | Vist to 547 Sig Tp  (PDF)
Click   Annex S - Paul Stock | Chau Duc  (PDF)
Click   Annex T - The Vatican Guineas   (PDF)
Click  
Annex U - Jim Kanowski | FSB Bridgit  (PDF)
Click  
Annex V -  547 Sig Tp Nominal Roll  (PDF)
Click  
Annex W - Report of the Inquiry into 547 Sig Tp 1966 to 1971  (PDF)

Click  OF Shush Missions, Voice Sorties and Pucker Factor (PDF)
Article from the Australian Aviation Magazine, May 1991 by Don Dennis

Click  Signals and ACVs - Part 1 Vietnam
Details of Signals and Armoured Command Vehicles (ACV) used in Vietnam including the 547 SIg Tp Vehicle "Callsign 85D" is on the 104 Sig Sqn Web Site.  Return to website via last memu option "Pronto Website"


Story 1 - Visit to 547 Signal Troop by US Army Lt Ron Estes

Story 2 - A Hair Raising Trip - ARDF task with the US Army by Garth Brown

Story 3 - A Tactical SIGINT Success by LTCOL Steve Hart (Ret'd) 

Story 4 - Battle of Long Tan and Signals Intelligence by Denis Hare



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