The talkback radio host Alan Jones made inaccurate claims about salaries paid to Climate Change Department staff on his radio show, a media watchdog has found.

The Australian Communications and Media Authority (Acma) found Harbour Radio, licensee of 2GB in Sydney, breached its accuracy obligations under the commercial radio code.

The findings relate to Jones's comments in October 2012, that "1,500 people" in the Department of Climate Change earned "a minimum of $135,000 a year".

But Acma pointed to information from the department's annual report for 2011-12 that showed it had 803 staff and that as at June 30, 2012 the salary range was $42,593 to $333,034.

"On this information, Jones's statement was inaccurate," Acma said in its report on Wednesday.

Acma also found Jones made inaccurate claims about a number of power stations that he suggested had closed because of the carbon tax.

The watchdog said sources relied on by 2GB were contradicted by material "readily available on the website of the owner of the power stations".

The findings come just weeks after Acma found that Harbour Radio breached the code when 2GB's Ray Hadley claimed children visiting Parliament House in Canberra would no longer get snacks and water.

Comment is being sought from 2GB.