Egypt maintains an extensive HF radio diplomatic network. It utilizes the following two off-the-shelf digital modes, both broadcast in USB mode:

When a SITOR-A link cannot be established, SITOR-B (also centered at +1700 Hz) may be used to broadcast a frequency change request.

Broadcast format

Ideally, the broadcasts consist of:

  1. Linking using SITOR-A, followed by initial chatter
  2. Re-linking using Codan Chirp
  3. Transferring messages using the Codan 16-tone waveform
  4. Optionally, linking using SITOR-A again, followed by farewell chatter

However, text messages are sometimes transferred using SITOR-A instead, typically in poor conditions.

The operator chatter is in Arabic, and is encoded using the ATU80 alphabet. The initial chatter is usually traditional Arabic greetings. When a message is about to be sent using SITOR-A, it is often indicated by the phrase "ﺍﺱﺕﻉﺩ" (get ready).

Message format

Messages sent using the Codan modem tend to be binary files of unidentified formats. However, some messages use text formats.

Traffic from or to "71", alleged to be the Egyptian military intelligence, takes form of 5-digit hex groups, 10 groups per line, preceded by English language headers of the following structure, one item per line:

  1. "From :" followed by a capital city name, or "71" in case of Cairo
  2. "To   :" followed by a capital city name, or "71" in case of Cairo
  3. "Time & Date:" followed by the message timestamp, using the following format: "11:57, Saturday, November 25, 2017"
  4. "Urgent" (no other values are observed in this line)
  5. A variable number of equal signs

There are also occasional cleartext messages, written in Arabic, containing recent world news or comments on embassy operation. These use headers like the following:

  1. A variable number of equal signs
  2. "ﻡﻥ : " followed by a capital city name, or a department name in case of Cairo
  3. "ﺍﻝﻱ : " followed by a capital city name, or a department name in case of Cairo
  4. A variable number of equal signs

The end of message is marked by a variable number of N's.


Contacts always take place with Cairo directly. Each embassy has a numeric ID assigned to it. Additionally, Cairo itself has many IDs on the network, which are used while a Codan link is being established, and on exceptional circumstances when an embassy calls Cairo using SITOR-A.

ID SITOR-A Location
00001 TVVX Algiers
00002 TVVQ Khartoum
00003 TVVK Rabat
00004 TVVM Kuwait City
00005 TVVP Abu Dhabi
00006 TVVC Baghdad
00007 TVVY ?
00008 TVVF Beirut
00009 TVVS Kuwait City
00010 TVXV Doha
00011 TVXX Sana'a
00012 TVXQ Tripoli
00013 TVXK ?
00015 TVXP Mogadishu
00017 TVXY Muscat
00019 TVXS Manama
00020 TVQV Riyadh
00021 TVQX Tehran
Western Europe
11101 XBVX ?
11102 XBVQ Paris
11103 XBVK Bern
11104 XBVM Berlin
11105 XBVP Rome
11106 XBVC Vienna
11107 XBVY London
11108 XBVF Madrid
11109 XBVS Nicosia
Eastern Europe
22201 QQTX Prague
22202 QQTQ Belgrade
22205 QQTP Moscow
33301 KKVB Addis Ababa
33302 KKVU Accra
33303 KKVE Bamako
33304 KKVO N'Djamena
33305 KKVI Dar es Salaam
33306 KKVR ?
33307 KKVZ Dakar
33308 KKVD Conakry
33309 KKVA Lagos
33310 KKXT Nairobi
33311 KKXB Kinshasa
33312 KKXU Harare
33313 KKXE Luanda
33314 KKXO Abidjan
33315 KKXI Asmara
33316 KKXR ?
33317 KKXZ Pretoria
33318 KKXD Djibouti
33319 KKXA ?
33320 KKQT ?
44401 OOVX Ankara
44402 OOVQ Beijing
44403 OOVK Jakarta
44405 OOVP Islamabad
44406 OOVC New Delhi
44407 OOVY Tel Aviv
44408 OOVF Pyongyang
44409 OOVS Kuala Lumpur
Latin America
55501 IPTX Havana
North America
66601 RCVB Washington, D.C.
MFA Cairo
99901 SSTB MFA Cairo
99902 SSTU MFA Cairo
99903 SSTE MFA Cairo
99904 SSTO MFA Cairo
99905 SSTI MFA Cairo
99906 SSTR MFA Cairo
99907 SSTZ MFA Cairo
99908 SSTD MFA Cairo
99909 SSTA MFA Cairo
99910 SSBT MFA Cairo
99911 SSBB MFA Cairo
99912 SSBU MFA Cairo
99913 SSBE MFA Cairo
99924 SSUO MFA Cairo

Source of the ID list: UDXF

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