Murderer was selling drugs from his Doncaster prison cell
and live on Freeview channel 276
A search of Timothy Avril's cell on November 26 last year uncovered just under 59 grammes of cannabis – worth £2,950 when sold in the prison – and a mobile phone.
Prosecutor Claire Walsh told Sheffield Crown Court he was sentenced to a minimum term of 20 years in December 2014.
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Hide AdHe has 22 previous convictions, including being concerned in the supply of drugs.
Edward Moss, mitigating, said: "The very fact of this conviction means it’s almost inevitable that he won't get parole at that hearing.
"He wants to move on. He has lost contact with his family and partner."
Avril, aged 28, of HMP Hull, pleaded guilty to both offences.
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Hide AdJudge Peter Kelson said: "Order within the prison system is very important and some would say it is more important than ever now."