Another radio ham detects Voyager 1 with just a 5.6-meter dish!
"Voyager 1 detected at 8420.4286 GHz with extremely long integration time. It is about 98 AU from Earth -
that is aprox. 14698 million Km. (14/04/2006 from 03:00 to 07:00)."
Scroll down a bit here:
http://w3ref.cfn.ist.utl.pt/cupido/dsn.html