Penta Comstat provides a continuous SailMail service on twelve frequencies using eight transceivers, a range of transmitting antennas and a remote receiving antenna at a noise free location on the property.

The reliable area of SailMail coverage from Penta Comstat is Eastern Australia and the South Pacific Ocean.

The SailMail Association has many other stations around the world which provide global coverage.

Penta Comstat is a private marine radio communication station operated by Penta Marine Radio Communications providing an email service over HF radio for members of the SailMail Association.

The voice communication service provided by Penta Comstat closed on 30 September 2006 after thirty years of operation.