Satellite malfunction affecting 144MHz

| August 7, 2015

The satellite known as PCSat, NO-44, has malfunctioned after 14 years in space.

It has started transmitting APRS beacons on 144.390MHz, outside its normal region of operation.

This can cause problems in the section of the 144MHz band normally used here for weak signal and meteor scatter working.

Mitigation of the problem is under active consideration but in the meantime it is important that no amateur in the UK or further afield should attempt to digipeat through this spacecraft.

The International Amateur Radio Union is working on ways to prevent future satellites from causing similar problems, which arise from developers not following the globally agreed band plans for amateur satellite operations.


  • AMSAT-UK has further details here
  • IARU has a statement here


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