Hi,
After quite a bit of Googling, I have decided to settle on making a simple radio telescope for listening to the Sun and Jupiter. The equipment seems quite simple (a piece of chicken wire, some copper wire, three 30 cm long dowels etc). There are a couple of versions on the web including one which uses a plastic table.
One link:
http://www.ukaranet.org.uk/uk_amateurs/bobgreef/
Regards,
Paul Floyd.