1 ATF, NUI DAT
           
111300 May 68

SIG INSTR 5/68 (Op TOAN THANG)

Time Zone used throughout this instr:  HOTEL

General

1.  HQ 1 ATF (Main) is to deploy to FSPB CORAL on 13 May 68.
2.  Current SOIs apply.

Radio

3.  1 ATF Comd Net (VHF) Current

a.  Step up station (callsign 11) is to join net at 130830H.
b.  Callsign 11 will revert to NCS with new callsign 19 when directed by Comms Con on orders
     of GSO2 (Ops).  Approximate timing 131400H.
c.  Existing callsign 19 will revert to retrans station callsign 81, on transfer of NCS, and remain
     BEARCAT.

4.  1 ATF Comd Net (Rear).  No change

5.  Misc Radio Nets

a.  1 ATF TG Link (HF Back Up).  No change
b.  Air Net.  Eagle Heights 2 closes BEARCAT 121930H, reopens FSPB CORAL 130830H.
c.  Local Def Net - Annex A.  Substations to join net on arrival at FSPB CORAL.
d.  Fwd TFMA Air Net - No change.

Radio Relay

6.

a.  LONG BINH - BEARCAT - NUI DAT system closes 121800H.  Reopens
     FSPB CORAL - LONG BINH - NUI SAT approx 131400H.  Channel allocation - no change.
b.  HQ 1 ATF (Main) to 2FFV (Hurricane TOC and Plantation) - channels close BEARCAT
     131400H.  Reopen FSPB CORAL to 2 FFV approx 131500H.
c.  RR HF Back Up 1 ATF (main) to 1 ALSG (Fwd) opens 121700H, closes 130500H
    (Voice only).

Sigcen

7.  Circuits closes BEARCAT 121800H.  Reopens FSPB CORAL 131400H.  Formal
     message traffic will be accepted for clearance through 9 Div Message Centre up to
    130500H.

Line

8.  Local line as required in FSPB CORAL is to be laid by 104 Sig Sqn.

9.  Trunk circuits no change.

Swbd

10.  Ebony Fwd closes BEARCAT 121800H.  Direct line TFMA/UNIT ECHs to HQ 1 ATF to be estb from 121800H.

11.  Ebony Fwd Swbd reopens FSPB CORAL 131400H.

12.  Telephone Directory to be issued 13 May 68.

Msg Carrying Agencies

13.  SDS, ADS and Air Courier time tables will be issued in loc FSPB CORAL when as availability and timings are known.

N. C. NUNRO      
Maj                       
Sig Offr                

ANNEX A TO SIG INSTR 5/68 
(OP TOAN THANG)

FWD DEF HQ NET

CALLWORD                                                                                                      FREQ

WC                                                                                                                       66.95

UNIT                                                                                                                     CALLSIGN

12 Fd Regt (Def Elm)                                                                                          1   NCS
HQ Coy                                                                                                                 2
TFMA                                                                                                                    3
1 Fd Sqn                                                                                                               4
Sig Sqn                                                                                                                 5
1 RAR ECH                                                                                                          6
3 RAR ECH                                                                                                          7
12 Fd Regt ECH                                                                                                  8
CP                                                                                                                         9
D Coy 3 RAR                                                                                                       10
102 Fd Bty                                                                                                            11
161 Fd Bty                                                                                                            12
Bty A 2/55                                                                                                             13
A Sqn 3 Cav                                                                                                         14
Spare 1                                                                                                                 15
Spare 2                                                                                                                 16

NOTES:

1.  Only the short Battle Antenna is to be used on this net.
2.  AN/VRC-46 Radio are to operate on low power on this net.

ANNEX B TO SIG INSTR 5/68
(OP TOAN THANG)

SWBD DESIGNATORS

(1)     101 AIRBORNE DIV                                                                            KISMET
          2/506 AIRBORNE BN                                                                          KOSHER

(2)     1ST INFANTRY DIV                                                                             DANGER
          A.   1ST BDE                                                                                        DEVIL
          B.   2ND BDE                                                                                       DAGGER
          C.   3RD BDE                                                                                       DUTY
                (1)  1/2 BN                                                                                       DRACULA
                (2)  1/16 BN                                                                                     DEVOUR
                (3)  1/18 BN                                                                                     DOGFACE
                (4)  1/26 BN                                                                                     DOBEL
                (5)  1/28 BN                                                                                     DEFIANT
                (6)   2/2 BN                                                                                      DARING
                (7)   216 BN                                                                                     DAMAGE
                (8)   2/18 BN                                                                                    DARKNESS
                (9)   2/28 BN                                                                                    DAUNTLESS
               (10)  1/4 CAV                                                                                   DRAGON
     

Webmaster Comment

Seven Signal  Instructions (Sig Instr) were issue by 104 Sig Sqn to cover Op Toan Thang phases, as follows:

1.  Sig Instr 3/68 (Op Toan Thang) issued at NUI DAT (23 April 68) with the requirements for Task Force Communications for Op Toan Thang.  It details the deployment and operations at BEARCAT.  It has Radio Diagrams, Radio Relay Diagrams, 1 ATF Main Telephone Directory and other information also used at FSPB CORAL.

2.  Sig Instr 4/68 (Op Toan Thang) issued at BEARCAT (?) and is missing from the War Dairies.

3.  Sig Instr 5/68 (Op Toan Thang) issued at BEARCAT (11 May 68) for deployment and operations at FSPB CORAL.  Detail above.

6.  Sig Instr 6/68 (Op Toan Thang)  issued at FSPB CORAL (2 June 68)  for 1ATF return to NUI DAT.

7.  Sig Instr 7/68 (Op Toan Thang) issued (12 June 68) for deployment and operations at LONG BINH.

8.  Sig Instr 8/68 (Op Toan Thang) issued LONG BINH (21 June 68).

9.  Sig Instr 9/68 (Op Toan Thang) issued LONG BINH (16 July 68)