HO GOVERNMENT RADIO COMMUNICATIONS NETWORKS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00809A000500730208-7
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 5
• Document Creation Date: December 21, 2016
• Document Release Date: September 3, 2003
• Sequence Number: 208
• Publication Date: November 11, 1998
• Content Type: REPORT

Approved For Release 2008/03/03: CIA-RDP80-00809A000500730208-7
VLJ'iJJlnlAiIIL)I CONFIDEIITIAL
CENTRAL INTELLIGF' ''E AGENCY
INFORMATION REPORT
COUNTRY Indo-China (Vietnam)
DATE DISTR. /f Msy 1951
SUBJECT Ho Government Radio Co
mmunications NO. OF PAGES 5,
25X1
PLACE
ACQUIRED
DATE
ACQUIRE
NO. OF ENCLS.
(LISTED BELOW)
SUPPLEMENT TO
REPORT NO.
DATE OF INFORMATION
TMU DOCUMENT CONTAINS INFORMATION AF ICTIl10 trig NATIONAI. DEFERS I
Or THE UNITED STATES WITIIN THE MEANING Or Trig ESrIONAO1 ACT DO
U. E. C.. SI AND 3E. At AMENDED. III IRANUNIIIION ON THE NI.ILATION
OP ITS CONTENTS IN ANT NAUTILI TO AN UNAUTMONIEIO PERSON 11 FRO-
M ILITID IT LAW. REPRODUCTION Or TIIIS FONN 11 PIOMIIITSO.
THIS IS UNEVALUATED INFORMATION
represent the incidental observations of an FBIS
citizen,jexperienced in radio communications and
monitoring field)
communications
employee (U. S.
engaged in monitoring press traffic transmitted
in'international morse code by several stations operated by or for
the Ho Government. They are not necessarily complete or in the normal
relationship to each other in all cases, since it has not been pos-
sible to check all relationships extensively during the period involved;
however the indicated relationships can be stated to be correct for
at,least a certain period. Since a number of the stations and trans-
development.
during the period of this observation are indicative of continued
missions have been checked almost daily, it is believed that this
effort to plot the scope and relationship of the networks is warranted'.
Itis worthy of note that there has been considerable development of
these facilities in the past year, and that changgs noted frequently
~N..
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CONFIDENTIAL
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NOTES:
1. XMSN times GMT: 0130-0300, 0500-0630? 0800-0900 (varied), 1030-1130, 1200-1300 (varies).
2. Sends manual 151- 20 words per minute.
3. Traffic consists of Vietnamese, French, German, English, 5 Letter Code.
4. VNA continues to call BPC33, whereas BPC31 is used by the answering station,
5. VNA and BPC31 frequencies are fairly stable - ABC frequency varies 100 to 200 kcs daily.
6. The location ofjABC is deduced, not announced.
CONFIDENTIAL
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CONFIDENTIAL
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DIAGRAM #2
awalJV .
1. XMSN times GMT: 0100-05001 0700-0900, 1000-1400.
t
i
e.
nu
2''. tends manual 15 words per m
3. Traffic consists.-of. Vietnamese,Frenchp 5. Letter Code, 5 Digit Code.
4. Frequency varies 100 kcs. (DHF/CQL2)'
5. KPC acts as relay for KBZ at times.
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 I~{
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3. Traffic consists of Vietnamese, 5 Digit Code, 5 and 6 Letter Code.
4. LPC frequency remains within 25 kc range.
5. AOF acts as relay for CMX and DBK.
6. RCQ2 acts as relay for CMX at times.
NOTES:
1. XMSN times GMr: 0005-0500, 0700-0900, 1000-1400.
2. Sends manual 18 words per minute.
Approved For Release 2008/03/03: CIA-RDP80-00809A000500730208-7
 Approved For Release 2008/03/03: CIA-RDP80-00809A000500730208-7
NOTESs
1. iKSN times GMT: 0100-0330.
2. Sends manual 15 words per minute
3. Traffic consists of Vietnamese, French,
DIAGRAM #5
NOTE
1. XMSN times 0130-0230, 1245-1330.
2. Sends manual 12-18 words per minute.
3. Traffic consists of Vietnamese.
CONFIDENTIAL
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5 Letter Code.
CONFIDENTIAL
Approved For Release 2008/03/03: CIA-RDP80-00809A000500730208-7