Mr Shipton stopped in Port Macquarie on May 11 as a part of an east coast #HomeRun4Julian campaign that started in Nimbin will make its way to Canberra via major cities and regional centres.

As a father, the decade-long fight for Assange's freedom has not waned. Nor has the campaign to preserve press freedom and truth in journalism.

Mr Assange remains detained in Britain's high-security Belmarsh prison after being seized from the Ecuadorian embassy in London where he had claimed political asylum for more than seven years.

He has remained behind bars for two years and continues to fight extradition to the United States where he could face a 175-year prison sentence on espionage charges after exposing war crimes.

Mr Shipton will continue to make appeals to US president Joe Biden and his administration to drop extradition proceedings.

Port Macquarie was the third last stop on the campaign tour.

"We will take a letter from me to president Joe Biden and it is sufficient for us for the US embassy to accept the letter," Mr Shipton said.

He said local political support is gaining weight with members of the Nationals, Greens and Labor backing his call to bring Julian home.

Opposition leader Anthony Albanese said earlier this year that "enough is enough" and could not see what is being served by keeping Mr Assange incarcerated.

"The government must now realise that the advice they are getting to acquiesce with the United States' persecution of Julian is incorrect and has bought about a diplomatic calamity for Australia in as much as we're seen to be complicit with the US in the prosecution of journalists and the restrictions of free speech, the intimidation and oppression of journalists, publishers and publications," Mr Shipton said.

He speaks with Julian for 10 minutes each day. His son is comforted by the sounds of the Australian bush heard in the background of their brief conversations.

Mr Shipton said his son's voice offers hope the battle is worth the sacrifice and so too does the knowledge that the legacy of their long fight for the truth will be peace and justice.

"My legacy though is to grow some vegies and play with the grandkids. That's my job at my age," he laughed.

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