Acknowledgements

The MOST is operated by the University of Sydney and supported by a grant from the Australian Research Council. We thank our colleagues in the Department of Astrophysics for their continued advice and encouragement in all aspects of this paper. In particular we thank the telescope staff, Jeff Webb, Michael White and Boyd Smithers, for their technical support and for reorganising the telescope maintenance schedule to allow us to make daytime observations.

We acknowledge the professional approach of Roger Smith, Geoff Hutchins and Jim Cleaves of the Spectrum Management Agency in addressing the difficulties arising from the proposed sale of the spectral band used by the MOST. The measurements depended on the loan of the mobile transmitter from the Department of Communication and the Arts, and we thank Alastair Gellatly (SMA), Suvath Lee (SMA) and Ian Waters (DCA) for their collaboration in planning and carrying out the field tests at Molonglo.

We thank the referee for bringing to our attention the status of the interference threshold published by the ITU.

© Copyright Astronomical Society of Australia 1997