, , =· ., Ati'I'l:RS 

~ ' . y....,,. .. · .~u AGENCY 

n~~ 25, D. C. .. ~ 

V:'DGSS-94 7 November 1945 

/y 

SUBJECT: Documents Relative to Pearl Harbor Investigation ,/' 

THRU: Chief, Intelligence Division, \"!DGSS-90 ,or---

TO: Director of Communications Research, WOOSS-14 

1. Pursuant to your verbal reouest of 5 November 1945, the following 

items are forwarded for your information: 

A. Attached as Tebs A Hnd B are photostats of two messages concerning Japanese diplomatic traffic having the indicator group HiGAB. 

B. Attached as Tab C is a tabulation of the 1'raffic Indexes and 

Radio Intercept Log Sheets of Second Signal Service Battalion stations 

aveilable at Army Security Agency for the period 19 November through 9 

December 1941. 

C. '!'abs D and E are photostatic examples of a Radio Intercept 

Log Sheet and a Traffic Index, respectively. 

5 Incls ~~Lu.. DAVID H. MENDELSOHN 

1. 'l'ab A Captain, Signal Corps 

2. Tab B Chief, 'fra.ffic Analysis and 

3. Tab C Control Branch 

4. Tab D 

5. '1'ab E 

Declassified and approved for release by NSA on 03-20-2014 pursuant to E. 0. 1352B 
• 

HEADQUkRTERS 

ARMY SECURITY AGENCY 

Washington 2', D. C. 

. I • . 

f.OOSS-94 7 November 19.45 

SUBJECT1 Documents Relative to Pearl Harbor Investigation 

THRtJ 1 Chief, Intelligence Division, 1/'lDGSf-90 

TO a Director of Communications Research, 'WD:}SS-14 

l. Pursuant to your verbal rec:;uef't of 5 November 191.i.5, the following item~ are forwarded for your infol"lllationa 

A. Attached as Tabs A and B are photostate of two meesages concerning Japti.nese diplomatic traffic having the indicator g:roup BYGAB. 

B. Attached as Teb C is a tabulation of the Traffic Indexes and 

Radio Intercept Log Sheets of Second Signal 8ervice Battalion stetions 

aV!!.ilable at Array' recuritJ Agency for the period 19 lovember through 9 

December 19J.l. 

c. Te.be D end E ere photostlitic exemplee of a Re.dio Intercept 

Log Sheet End a Traffic Index, respectivel7. 

5 Incle DAVID H. MEHDELSOHI 

1. Tab A Ce.ptain, Signal Corp• 

2. Tab B Chief, Traffic Analysis end 

J. Tab C Control Branch 

4. Tab D 

5. Tab E 

Declassified and approved for release by NSA on 11-06-2013 pursuant to E .0. 1352a 
~ 

-

I 

~-

REF ID:A488504 

~.' 

PRIORITY 0-3 

OCSigO 

OCSigO 311.5 Gen. 

R. W. Minckler, Lt. Col., Signal Corps 

NO_VEMBER 26, 1941_ 

SIGNALS HAWAIIAN DEPT FORT SHAFTER T H 

SIGNALS PHILIPPINE DEPT MANILA p I 

FOR MON!TORING STATION REQUEST ALL JAPANESE DIPLOMATIC TRAFFIC HAVING 

INDICATOR GROUP BYGAB REPEAT BAKER YOKE GEORGE AFFIRM BAKER APPEARING 

WITHIN FIRST SIX GROUPS OF TEXT BE FORWARDED BY RADIO IN SYSTEM 

THIRTEEN STOP GENERAL TYPE TRAFFIC FURTHER IDENTIFIED BY FIVE DIGIT 

GROUP NEAR END OF .MESSAGE STOP DESIRED INDICATOR USED ON OR ABOUT 

NOVEMBER TWENTY SIXTH EXPEDITEOLMSTEAD 
- REF ID:A488504 

SRliEr 

PRIORITY 0-3 

OCSigO 

OCS~gO 311.5 Gen. 

R.W. Minckler, Lt. Col., Signal Corps 

NOVEMBER 26, 1941 

SIGNALS HAWAIIAN DEPT FORT SHAFTER T H 

SIGNALS PHILIPPINE DEPT MANILA P I 

FOR MONITORING STATION REQUEST ALL JAPANESE DIPLOMATIC TRAFFIC 

HAVING INDICATOR GROUP BYGAB REPEAT BAKER YOKE GEORGE AFFIRM . (G\'bA~) 

BAKER APPEARING WITHIN FIRST SIX GROUPS OF TEXT BE FORWARDED 

BY RADIO IN SYSTEM THIRTEEN STOP GENERAL TYPE TRAFFIC FURTHER 

IDENTIFIED BY FIVE DIGIT GROUP NEAR END OF MESSAGE STOP DESIRED 

INDICATOR USED ON OR ABOUT NOVEMBER TWENTY SIXTH EXPEDITE 

OLMSTEAD 

COPY 
I J 

I 

REF ID-:-A-4-8-BSJJ-4-

• 

.. · 

STANDARD FORM No. 14A 

.• APPROVED BY THE PRUIDt;NT 

MARCH 10. 106 

TELEGRAM 

f F.F.lCIAL ..BIJSl.fllESS-GOVERNMENT RATES 

SEN NU. 4b7 TU HAWA 11., 11/26/41 

SENT NO. 612 TO MANILA, 11/26/41 

---------- J./57 SIGNA~~WAIIAU D;;\.ORT SHAFTER '-..:'."" ./ -- --- ----~> J 'J .2.. SIGIJALS PHILIPP-INE DEPr ~LANIIA p I 

;tM 

NOvaIBER 26, 19/J. 

T H 

,,. Bec1et 

•1Autho;:ty0r the 

Chief Sigr>al OU'~fll" • I, 

:;;;; If :~~ 1 ............ 0 .~'A FOR HONITOIUlJG STATIOrJ REQUEST ALL JAPAMESE DIPLOMATIC TRAFFIC HAVING 

• 

• 

INDICATOR GROUP BYGAB REPEAT BAirnH. YOKE GEORGE AFFIRM BAKER APPEARING WITHIN .:'-· 

FIRST SIX GROUPS OF TEXT DE FORWARDED BY RADIO IN SYSTEM THIRTEEN STOP. CJENDlL 

TYPE TRAFFIC FURTHER IDEN'l'IFIED BY FIVE DIGIT GROUP NEAR END OF MESSAGE SToP 

DESIRED INDICATOR USED ON OR ABOUT NOVEMBER TWENTY SIXTH EXPEDITE 

OLHSTEA.D 

• 

.... ___ _ .~ .. t ________________ _ '~i t1 
• 

. ; 

-

8WTJ 

908 p 11/28 ~l~'ilD~F ,.,.F~ ID:A488504 

RADIOGRAM 

Received at the War Department Message Center 

Room 3441 Munitions Bldg., Washington, D. C. 

December 2, 1941 

7:09 P.M. 

From MANILA P I .. To CHIEF SIGNAL OFFICER 

c 

0 

p 

y 

1005 TWENTYEIGHTH FROM MAJOR SHERR FOR SIS DASH 

ImFERENCE YOUR SIX ONE TWO THERE ARE NONE ON HAND 

TO DATE. MANY MESSAGES OF GENERAL TYPE WITH INDICATOR 

BYHBD REPEAT BAKER YOKE HYPO BAKER DOG.ARE AVAILABLE. (_B~Wo})) 

AKIN 
Recenred at.the War Department Message Center 

Room 3441 Munitions Bldg., Washington, D. C . . ) 

.· .. ·. ~. December 2, ./ . 

0-4-c··· 

1941 

From MANILA P I 

Copks fu,11is~d as noted: 

Action Copy 

To CHIEF SIGRlL OFFICER 

1005 T\'.ENTYEIGHTH FR01.~ HAJOR SHEH~1 FOR SIS DASH l 

REFERENCE YOURR SIX ONE TWO - THERE ARE NONE ON HAND 

TO DATE. MANY MESSAGES OF GENEr~ TYPE ETH INDICATOR 

BYHBD REPEAT BAKER YOKE HYPO BAKER DOG A..J:IB AVAILA.BIE. 

AKIN 

HDIFOlllll-PATD.-A•Elll:!CAN SAUi llOOIC CO-, INC .. NIAGi.ARI fALll. I. J. 
• -

WOOSS-95 

Monitor 

Station 

·1. 

2. 

3. 

4. 

5. 

6. 

7. 

~-ID:A488504 --· 

LIST OF PEARL HARBOR LOGS AND 

INDEXES AVAILABLE IN ARMY SECURITY AGENCY 

Location Radio Intercept 

TAB C 

7 November 1945 

Traffic 

Log Sheets (daily) Indexes (daily) 

Fort Hancock, N. J. 19 November thru 19 November thru 

9 December 1941, 9 December 1941, 

complete. complete. 

Presidio, San Francisco, 19 November thru 19 November thru 

Calif. 9 Dec·ember 1941, 9 December 1941, 

complete. complete. 

Fort Sam Houston, Texas 19 November thru 19 November thru 

9 December 1941, 9 December 1941, 

complete •. complete. 

Quarry Heights, C. z. 19 November thru 19 November thru 

9 December 1941, 9 December 1941, 

complete. complete. 

Oahu, T. K. 19 November thru 19 November thru 

9 December 1941, 9 December 1941, 

complete. complete. 

Fort McKinley, P. I. None on hand. None on hand. 

Fort Hunt, Va. 19 November thru 19 November thru 

9 December 1941., 9 December 1941, 

complete. complete. 

SECRET 

' 
,.,_, . 

'}~'. . 

" 

~ . " • J .• .. }:~t -' ' ~ __ ·. 

st'e.ti«tll llo~ Tli,'I ' Date DEC ~t :1941' 

· Station Statio Time· Read a- How re- Govt. 

Logged Worked Frequency From To bility coiv~:i Traffic Remarks 

l 2 3 4 5 6 7 8 

LSI GLV 

FVM2 

HBL 9880 2130 0500 s H 1 

LSX5 PPQ ??? I 2350 0200 s NO NO 

PPH JUJ I 

XGT I 

JUF I 

DFD 11930 2015 1000 s i H R 6 

I 

J 

PPt.i DFD I I 

PSN 

12030 0430 

I 

I 

rYM2 I 

DFS 10310 s I H 3 

- - . ·• I i 

PPX HBF I 

@ I CEA2 I i 

LQB2 i I IRW 20720 1300 2130 s H NO 

\ 

XDA DFQ I 

WPE I 

EAN2 15425 1300 0100 s I H NO 

I 

XDB WET 

WEJ i 

DGK I a JYY 7380 I 0100 1000 s H 

I 

XDY VJET l 

DGK I 

WEJ I H 10 

WED 9917 2130 0800 s 

I 12 

KNA9 WKT7 5370 INTERMITI s ' RT 

I 

WKT8 WNDC 60000 INTERMITT s T 6 I 

I 

1300 2100 s I R 5 

WQEN WEJ 5125 I c~ I~ CHGE. I 

I I I 

I 

. 1 . . . . . ~- ' 'fr',• ··'"''k.,. 

- - - - -- - - -- - -- -- ---- -- -----·-· -- . -- - - --

Station ------- 7 Pagfll__..:2=--- Date --------
-, '. --_, _ .. ,~. ',,",;,;~· ' . -,, 

1,-~~~~~;~,,: 

Date DE9EMB~R _,3 1941 

~1~~~...,... ........ !t!l"'-r-~~~"1----""------....... ~--~--~----..------......--~--.,....--,__ · ·~< ." ·"l .;.1 (') gna ure 

"' , : Dest. , Call Origin or last 

-·----1-----+-S..;;.:i ~+------+;:.::12::..+--..::::.:...~::.:...--J~...:G:.:..ro:::.,:u:£-----i..-:~::+---

/ 23719 ;NAM TOI< SD BERLIN 

I ,'",r , 

. i\. 23719/j GA I TOK SD HELSINKI 

~.,J23720 SUM TOK SD HELS IN~~. 

23721 DIP TOK SD BERLIN. 

23722 CON KOBE SD BERLIN 

23723 DIP TOK 

23726 DIP HAV 

BERLIN 

EB BERLIN 

23727 DIP WASH EB BERLIN ·') ,' / 

'./ 23728 DIP WASH VEB BERLIN 

(4130 DIP WASH WEB BERLIN 

23731 DIP WASH QW BERLIN 

23732 \DIP WASH Cl BERLIN 

23735 REL MEX DB BERLIN 

23736 REL MEX XDB BERLIN 

23737 ' REL MEX 

23738 I REL r .. 1EX 

23742 REL MEX 

23744 DIP POR 

! . 

23745 IDIP 

23747// KOS 

I 

237 48;· I KOS I I 

(~3749 vi KOS 

. 23750;.;f KOS 

23752;Vt KOS 

-- -- -

LIMA 

WASH 

WASH 

WASH 

WASH 

WASH 

23754/ KOS WASH .. 

I 

2375~V KOS WASH 

XDB 

DB 

BERLIN 

BERLIN 

BERLIN 

CH2 BERLIN 

C02 BERLIN 

NEU TOKIO 

mEU TOK 10 

TOKIO 

TOKIO 

TOKIO 

~3756/J KOS WASH 

TOK TO ----

NEU TOKIO 

NEU TOKIO 

\ \: 23757 RIK WASH NNEU TOK I 0 

\ 

23758 KOS WASH WNEU HWOOD 

23759 KOS WASH HWOOD 

23760 JAP WASH TOKIO 

ZIMU- KYUU- AZUMI 

AFJHE LABIF SAKAYA 

64849 QIAON ABCDE 

DHR5 CITO 22473 ZIEGLER 

DHRS 15103 0594 BEJlREND 

DHR5 22453 6586 BRAUNSTUMM 

PCR CITO 1_203 ZIEGLER 

DHI 

DHI 

DHI 

2335- 7546 BRAUNSTUMM 

37373 ULUN- KRALlARZ 

CITO 23373 BRAUNSTUMM 

DGK _338- 7548 LUTHER 

IDGK EMIL 37373 GROTE 

DGK 1717 TRECE LEGAMEX 

DGK 1718 EFEC- LEGAMEX 

DGK 1719 COMU- LEGAMEX 

DGK 

DGK 

DGK 

IDGK I 

1J 4 XAFOZ AZCARATE 

115 MELIF REPAT 

25/2 91445 24797 

37373 UNRO- SCHMIDT 

SIKYU 05894 TOGO I 

WKT6 

WKTS KINQU 08800 TOGO 

WKT8 DAIQU 89414 TOGO 

WKT8 DAIQU 34807 TOGO 

WKTB DAJQU 43478 TOGO 

· · WKT~ -DA-I QU 46070 -TOGO 

WKT8 20803 XDNEV TOGO 

WKT8 DAIQU 89630 TOGO 

WKT8 22323 64032 NERNS 

WKT2 SIKYU 01090 NAKAUCHI 

WKT2 90070 TATU- NAKAUCHI 

WKT2 GOFU- SEKA- SUGIMASATO 

c 39 

c 36 

c 30 

c 297 

c 15 

c 39 

c 78 

c 54 

c 35 

c 290 

p 9 

p 10 

p 17 

c 312 

c 

c (81) 

c 107 

c 71 

c 17 

c 48 

c 178 

c 179 

.C. 83 

c 24 

c 46 

c 39 

p 10 

p 11 

p 8 

237Q~1 ....!...[~.....W~L-Jil.Ull.J;....L-J-UUU.U-~-1.JLUU"'-'L-AJl..ULl,/,.u-..J.J.'K,J~"'"-'4-Q&R-~~-t-'--H~ 

Date DEC. 4, 1941