Purpose

Monitor those frequencies allocated exclusively to the Amateur Service and Log (for statistical purposes), Identify (where possible) and take measures to have removed all Non-Amateur signals detected in the amateur bands.

Organisation

National Society Monitoring Services, in addition to any national activity, supply data on "intruding" signals to their IARU Regional Coordinator.

Coordinators

New Zealand: Len Martinson ZL1BYANew Zealand. Email:

Region 1: Wolfgang Hadel, DK2OM, Germany. Email:
Region 1 Web Site http://www.iarums-r1.org

Region 2: William Zellers, WA4FKI, USA. Email:
Region 2 Web Site http://www.iaru-r2.org/

Region 3: B.L. MANOHAR, VU2UR, India Email:
Region 3 Web Site: http://www.jarl.or.jp/iaru-r3/ms/r3msnl.htm

Reporting

Reports on "Intruders" should be sent to the National Coordinator in the country of the person reporting. Where a coordinator has not been appointed, reports may be sent to the Regional Coordinator.

Signal Types

A short sound bite of various "intruder" types signals may be heard by selecting the appropriate button below. These are a few samples of some of the many strange sounds to be found, from time to time, in the amateur bands.

• A1B - Machine sent Morse
• A3C - Slow speed Weather Fax
• F1A-FSK - Frequency Shift Morse
• F1B - Radio Teletype - Wide Shift
• F3C - Weather Fax
• M7B - Phase Modulated, multi-channel, also known as "Vocoder" system
• PIC - Picollo Transmission
• AXX - Naval System, also known as "Alligator"
• OTHR - Over the Horizon Radar
• PXX - Complex pulse position modulation system
• T-SCAN - Traveling Ionosphere Sounder