Residents at Mowbray say they will consider moving if a 35-metre Optus telecommunications tower is built on Vermont Road, citing radiation-related health fears.

Optus towers have also been proposed for a site on Killafaddy Road, St Leonards, and Opossum Road, Norwood.

Community Christian Academy principal Alan Greenwood said the school's board had sent a letter to the Launceston City Council speaking against the St Leonards tower, which had been proposed for a site next to the school.

He said there were child health concerns that the tower would be built within one-kilometre of the school, an ABC learning centre and children's sporting facilities.

"Various studies suggest that young children are at much higher risk to these towers and the radiation they produce than grown-ups and therefore we are very concerned for their well-being," Mr Greenwood said.

"I think it is extremely insensitive to put a tower where young people are constantly exposed to these sort of dangers."

Council general manager Robert Dobrzynski said Optus had indicated the sites were part of its mobile network expansion to improve network coverage for the area.

He said Optus was required to submit an electromagnetic emissions report to the council, which indicated the level of radiation produced.

"The weight of national and international scientific opinion indicates that there is no substantive evidence that exposure to low radio frequency emissions causes adverse health effects," Mr Dobrzynski said

Mowbray residents Diny and Cecily Van Galen said they would leave their home of 36 years if a proposed tower was built on Vermont Road, 50 metres from their doorstep.

The sister-in-laws have sent a submission to the council apposing the tower, saying it could affect their health.

Digital Tasmania Consumer Action Group, a not for profit organisation in favour of telecommunications towers, said there was little to no evidence to prove that the radiation produced by the towers was harmful.