Samuel Peter Frederick Land, 24, of Hokianga, Adrian James Leason, 42, a teacher from Otaki and Peter Reginald Leo Murnane, 67, a Dominican friar from Auckland, were arrested by police who are considering charging the men with sabotage under the Crimes Act, an offence which carries a maximum sentence of 10 years' jail.
Damage to the radome is estimated at more than $1 million.
The three have been granted bail and released and have a June 9 pre-depositions hearing.
Supporters rallied outside the courtroom in Blenheim on May 5 and yelled "What do we want? Waihopai Closed''.
The action has brought worldwide attention to the fact that the U.S. spy satellite base in based in New Zealand and should be a positive boost to the long standing campaign against the base by the Anti-Bases Campaign in Aotearoa/New Zealand.