Her body has never been found despite two separate inquests finding that she had likely been murdered.
Chris Dawson, 70, faced Sydney Central Local Court via video link today charged with the murder of his wife on Sydney's northern beaches in early 1982.
His lawyer said he would make a formal bail application at a later date. "I want to assist the court in doing it properly - there's no need in rushing these cases like this".
They charged him with an arrest warrant and he appeared in the Southport Magistrates Court, where NSW detectives applied for and were granted his extradition to Sydney.
Host Hedley Thomas described the response to the news within the podcast production and among Lyn Dawson's elated family members, who have long called for justice in the cold case. She was 33 at the time.
Mr Dawson has previously denied killing Lynette Dawson, the mother of his two children, saying she abandoned the family for a religious group.
He maintains he had nothing to do with his wife's disappearance.
Mr Walsh said his client was entitled to the presumption of innocence. "He will plead not guilty, he strenuously asserts hi innocence, and he should be afforded that fundamental right".
"That is a worry because it can distort people's memories and there have been significant delays in this case and inadequacies in the investigation by the police".
Detectives from the Queensland Police Service's Homicide Squad arrested Chris just before 8am on Wednesday morning in the presence of Strive Force Scriven investigators at a home in Biggera Water on the Gold Coast.
The former school teacher was sitting in the back of a vehicle next to a police officer as he was being driven to the airport, after facing an extradition hearing on Wednesday.
NSW Police Commissioner Mick Fuller said Ms Dawson's family was relieved after being told of the arrest.
It is believed the arrest follows new information provided by Dawson's teenage lover at the time, Joanne Curtis.
"I think now we just wait as the legal process unfolds".
"We gave each other a big hug".
"We are disappointed at the decision of the DPP as there is clear and uncontested evidence that Lyn Dawson was alive long after she left Chris and his daughters", brother Peter Dawson said, according to the Seven Network.
During a search in 2000, police found a cardigan of Lynette Dawson's that had cuts consistent with a stabbing. Police said he was "calm and a little taken aback".
"Today is a good day for us", she said.