Monitoring System (IARUMS)

International Classification of Emissions

The following short list of classifications of emissions is for those modes most frequently used by non-amateur ‎stations operating in the Amateur Bands and is for you guidance only. While the list is not complete it covers the ‎Minimum format to be used when submitting reports. For your further information the paper contains an extract ‎of the ITU classifications of emission for those who wish to report the full details of signals heard.‎

Some examples of symbols for the most common classes of emission.‎

 Telephony:‎
   Single side band, suppressed carrier (SSB)‎  J3E
   Frequency modulation (FM)‎   F3E
   Phase modulation (PM)‎    G3E
   Amplitude modulation (AM)‎   A3E
 
 RTTY & SITOR:‎
   Direct frequency shift keying of the carrier  F1B
   Frequency shift keyed audio tone (FM)‎  F2A
   Frequency shift keyed audio tone (SSB)‎  J2B

 Morse:‎
   On/off keying of carrier (hand sending)‎  A1A
   On/off keying of carrier for automatic reception A1B
  On/off keying of the Audio tone (FM transmitter)‎ F2A

Extract from the Radio Regulations of Article 2, Nomenclature.‎

Section III. Designation of Emissions

S2.2‎ Emissions shall be designated according to their necessary bandwidth and their classification ‎in accordance with the method described in Appendix 1.‎

Extract from the Radio Regulations of Appendix 1‎

APENDIX S1‎

Classification of Emissions and Necessary Bandwidths

‎(see Article 2)‎

Section II. Classification

‎§ 3.‎ The class of emission is a set of characteristics conforming to § 4 below.‎

‎§ 4.‎ Emissions shall be classified and symbolised according to their basic characteristics as given in Sub-‎Section IIA and any optional additional characteristics as provided for in Sub-Section IIB.‎

‎§ 5.‎ The basic characteristics (see Sub-Section IIA) are;‎

‎(1) first symbol - type of modulation of the main carrier;‎
‎(2) second symbol - nature of signal(s) modulating the main carrier;‎
‎(3) third symbol - type of information to be transmitted.‎

Modulation used only for short periods and for incidental purposes (such as, in many cases, for ‎identification or calling) may be ignored provided that the necessary bandwidth as indicated is not thereby ‎increased.‎

Sub-Section IIA. Basic Characteristics

‎§ 6.‎ ‎(1) First symbol - type of modulation of the main carrier‎
 ‎(1.1) Emission of an unmodulated carrier‎    N
 ‎(1.2) Emission in which the main carrier is amplitude-modulated ‎(including cases where sub-carriers are angle-modulated)‎ 
  ‎(1.2.1) Double-sideband      A
  ‎(1.2.2) Single-sideband, full carrier    H
  ‎(1.2.3) Single-sideband, reduced or variable level carrier  R
  ‎(1.2.4) Single-sideband, suppressed carrier    J
  ‎(1.2.5) Independent sidebands     B
  ‎(1.2.6) Vestigial sidebands‎     C
  ‎(1.3) Emission in which the main carrier is angle-modulated
  ‎(1.3.1) Frequency modulation‎     F
  ‎(1.3.2) Phase Modulation‎      G
 ‎ (1.4) Emission in which the main carrier is amplitude - and‎ angle-modulated either simultaneously or in a pre-established sequence      D

 ‎(1.5) Emission of pulses2‎
   ‎(1.5.1) Sequence of unmodulated pulses‎    P
  ‎ (1.5.2) A sequence of pulses‎
   ‎(1.5.2.1) modulated in amplitude‎    F
   ‎(1.5.2.2) modulated in width/duration‎   L
   ‎(1.5.2.3) modulated in position/phase‎   M
   ‎(1.5.2.4) in which the carrier is angle modulated‎
    ‎ during the angle-period of the pulse  Q
   ‎(1.5.2.5) which is a combination of the forgoing‎
    ‎ or is produced by other means‎   V
 ‎(1.6) Cases not covered above, in which an emission consists of
  ‎ the main carrier modulated, either simultaneously or in a‎
  ‎ pre-established sequence, in a combination of tow or more of
  ‎ the following modes; amplitude, angle, pulse‎   W
 ‎(1.7) Cases not otherwise covered‎     X
    
‎2Emissions where the main carrier is directly modulated by a signal which has been coded into ‎quantized form (e.g. pulse code modulation) should be designated under (1.2) or (1.3)‎

‎§ 6.‎ ‎(2) Second symbol - nature of signals(s) modulating the main carrier
  ‎(2.1) No modulating signal‎      ‎0‎
  ‎(2.2) A single channel containing quantized or digital information‎
   without the use of a modulating sub-carrier3‎   ‎1‎
  ‎(2.3) A single channel containing quantized or digital information‎
   with the use of a modulating sub-carrier3‎    ‎2‎
  ‎(2.4) A single channel containing analogue information‎   ‎3‎
  ‎(2.5) Two or more channels containing quantized or digital‎
   ‎ information‎       ‎7‎
  ‎(2.5) Two or more channels containing analogue information ‎  ‎8‎
  ‎(2.7) Composite system with one or ,more channels containing
   ‎ quantized or digital information, together with one or more‎
   ‎ channels containing analogue information‎    ‎9‎
  ‎(2.8) Cases not otherwise covered‎     X
    
 ‎3 This excludes time-division multiplex.‎
‎§ 6.‎ ‎(3) Third Symbol - type of information to be transmitted‎
  ‎(3.1) No information transmitted‎     N
  ‎(3.2) Telegraphy - for aural reception‎     A
  ‎(3.3) Telegraphy - for automatic reception‎    B
  ‎(3.4) Facsimile‎       C
  ‎(3.5) Data transmission, telemetry, telecommand    D
  ‎(3.6) Telephony (including sound broadcasting)‎    E
  ‎(3.7) Television (video)‎      F
  ‎(3.8) Combination of above‎      W
  ‎(3.9) Cases not otherwise covered‎     X

    
 ‎4 In this context the word ‘information’ does not include information of a constant, unvarying nature ‎such as is provided by standard frequency emissions, continuous wave and pulse radar. etc.‎

Sub-Section IIB. Optional Characteristics for the Classification of Emissions

‎§ 7.‎  Two optional characteristic should be added for a more complete description of an
emission. These are (see also Recommendation 62)‎
   Fourth symbol - Details of signal(s)‎
   Fifth symbol - Nature of multiplexing‎
   Where the fourth or fifth symbol is used it shall be as indicated below.‎
   Where the fourth or fifth symbol is not used this should be indicated by a dash where each ‎symbol would otherwise appear

‎§ 7.‎ ‎(1)‎ Fourth symbol - Details of signal(s)‎
  ‎(1.1)‎ Two-condition code with elements of differing numbers and/or
   durations       A
  ‎(1.2)‎ Two-condition code with elements of the same number and
   duration without error correction     B
  ‎(1.3)‎ Two-condition code with elements of the same number and
   duration with error correction     C
  ‎(1.4)‎ Four-condition code in which each condition represents a ‎
   signal element (of one or more bits)‎    D
  ‎(1.5)‎ Multi-condition code in which each condition represents a ‎
   signal element (or one or more bits)‎    E
  ‎(1.6)‎ Multi-condition code in which each condition or combination
   of conditions represents a character    F
  ‎(1.7)‎ Sound of broadcasting quality (monophonic)‎   G
  ‎(1.8)‎ Sound of broadcasting quality (stereophonic or quadraphonic)‎ H
  ‎(1.9)‎ Sound of commercial quality (excluding categories given in
   sub-paragraphs 1.10 and 1.11)‎     J
  ‎(1.10)‎ Sound of commercial quality with the use of frequency
   inversion or band splitting     K
  ‎(1.11)‎ Sound of commercial quality with separate frequency- modulated‎
   signals to control the level of demodulated signal   L
  ‎(1.12)‎ Monochrome       M
  ‎(1.13)‎ Colour       N
  ‎(1.14)‎ Combination of the above     W
  ‎(1,15)‎ Cases not otherwise covered     X
‎§ 7.‎ ‎(2)‎ Fifth symbol - Nature of Multiplexing‎
  ‎(2.1)‎ None        N
  ‎(2.2)‎ Code-division multiplex5‎     C
  ‎(2.3)‎ Frequency-division multiplex     F
  ‎(2.4)‎ Time-division multiplex     T
  ‎(2.5)‎ Combination of frequency-division multiplex and time-division
   multiplex       W ‎
  ‎(2.6)‎ Other types of multiplexing     X
     
 ‎5 This includes bandwidth expansion technique

Ron Roden - G4GKO passed away. A great loss to the Amateur Radio Community

Ron (SK)

Ron Roden G4GKO passed away on March 28th, 2004
- A great loss to the Amateur Radio community! -

It is with great sadness and deep sorrow, that the Amateur Radio community learned of Ron Roden’s death. He passed away evening March 28th, 2004, at the age of 80 years. IARU Monitoring System and all its members mourn for the great loss. Ron was the Co-ordinator of DARC MONITORING SYSTEM Intruder Watch of Region 1 from 1990 to 2002.

Ron Roden - G4GKORon Roden was born on January 27, 1924 in the city of Cardiff, South Wales. He was a student at Cardiff High School, and later became a telecommunications engineer. During World War II he served as a cable and telecommunications engineer on various cable ships to position and repair deep sea cables. During one of his cable jobs in Brazil he met a Brazilian girl, Ines, who then was studying Music and Philosophy in Sao Paulo. In 1948 they married, and Ron took his wife to England.

During the following years we see Ron on various locations around the globe: Starting as an Assistant Engineer he then became a Chief Engineer and finally General Manager of Cable & Wireless Corporation. He was stationed in Antarctica, Ascension Island, Bermuda, Cameroon, Canada, Falkland Islands, Gibraltar, Fiji, Malaysia, New Zealand, Singapore, and USA. His job was always dealing with telecommunications, either on short waves or satellite communication.

Read more: Ron Roden - G4GKO passed away. A great loss to the Amateur Radio Community

Firedrake Music Jammer

Firedrake Music Jammer was heard on May 1st, 2009 and starting to jam after the usual 5 minutes break at 0905 UTC on 13970 kHz. The jammed station was possibly Sound of Hope from TWN.

10147 kHz – Far East pirate net

The pirate net on 10147 kHz (LSB) is still very active every day at 1400 utc and (or) later. Probably male persons from Indonesia.

14001.9 kHz – Weatherfax from USA

Weatherfax transmission on 14001.9 kHz on February, 18th at 17 utc. The parameters: 120 rpm and IOC 576. Ident: “NIK”. Source: US Coast Guard Boston. The transmission frequency was possibly mistuned.  I informed AA3GZ, Jack. He sent a complaint to the US Coast Guard. The German PTT was informed, too.

7089.9 kHz – weatherfax from Sevastopol, Ukraine – still active

We found a weatherfax on 7089.9 kHz with daily transmissions from 1340 - 1400 utc. The parameters: 60 rpm – IOC: 576, shift 770 Hz, transmitting from an old fax machine. The German PTT (BNetzA) sent an official complaint to Ukraine.

10140 kHz – OTH radar Cyprus

The OTH radar Cyprus appeared very often and disturbed the 10 MHz-Band with signals spreading over 20 kHz. Pulse rate often 50 pps.

IARU Monitoring System (IARUMS) Terms of Reference

 

Seven Points to get started with an Intruder Watch

1. The most important aspect is to have good contacts with your National Telecommunications Authorities. Please try to contact their officers personally and find a person who you can contact when you have a complaint of Interference. It would be the best thing if this is always the same person.

2. To not lead the "Battle" alone, try to find companions to help you.

3. Each contributor can help you: Maybe he is very good at CW, maybe he speaks foreign languages, maybe he has special equipment to monitor digital modes, maybe he can be active during night time bcos he needs little sleep.

4. Tell the members of your society that you are the "new Coordinator“ of their Monitoring System. This can be in your national amateur radio pamphlet or news by bulletins on SW or VHF or UHF. Write reports about the success of your Intruder Watch in your National amateur radio pamphlet.

5. Create a Homepage for your intruder watch with "Latest News"! Refer to the homepage of IARU MONITORING SYSTEM in Region 1 for a wealth of information!

6. Tell your future contributors and/or members what you need to file a report about an intruder: Frequeny (in kHz), Time (UTC), Day of the Month, Mode, Country if you know, Ident, Remarks (calls if known, language, locations, names, sked times...). Download the Monthly IARU Region 1 monitoring System report template used by volunteers or national coordinators.

7. Tell the members of your club how to reach you, either by direct letter, by phone or email. Do always confirm a report, even if it is complete rubbish! Do not re-invent the Wheel, just contact Wolf Hadel DK2OM and Peter Jost HB9CET for help.


About the IARU Monitoring System (IARUMS)

The IARU Monitoring System (IARUMS) is established to carry out the policy for monitoring laid down by the IARU Administrative Council (AC).

The IARU Region 1 Monitoring System shall act decisively, within the limits of the Executive Committee's guidelines in defence of the amateur bands and use it's best endeavour for the removal of those stations not authorised to operate in those bands

IARU Monitoring System Organization Chart
IARU Monitroing Service Organization Chart

 

The IARU Region 1 IARUMS Co-ordinator shall:

a. Use his best endeavour in defence of the amateur bands against non-authorised users

b. Co-ordinate and support the efforts of the Region 1 Member Societies in protesting the use of amateur frequencies by non-amateur users

c. Compile regional data and progress reports and forward them to the National Co-ordinators and the IARUMS Co-ordinators of Region 2 and Region 3

d. Edit a monthly newsletter for the active IARU-MS members of Region 1

e. Assist National Co-ordinators in effectively carrying out their functions within the IARUMS

f. Acknowledge all reports and inquiries received from National Co-ordinators and periodically summarise to a National Society the status of its reports

g. Keep National Co-ordinators adequately informed of current developments

h. He may receive and process reports from individuals in those countries where there is no IARU Member Society.

The IARU Region 1 IARUMS Co-ordinator will send the monthly newsletter to the EC and collect his information for a General Conference.