The mast will be based 200 metres from Penglais secondary school

The mast, which belongs to mobile phone company O2, was taken down from the university campus at Aberystwyth because staff were worried about radiation emissions.

Three dishes will now be attached to the mast on land owned by Dwr Cymru Welsh Water, just 200 metres from Penglais School in the town.

The mast will be used to transmit mobile phone signals for O2 and Orange, as well as the new police radio system Tetra.

O2 was given permission to put up the dishes by Ceredigion Council's planning committee last week.

But governors at the 1200-pupil school and councillors in the Llanbadarn area of Aberystwyth are worried about the possible risks to health.

We are aware of people's concerns but if there is a risk it is one that people think is worth taking Angela Johnson, O2

"The mast is only 200 metres from Penglais school and I am very concerned about the health issues involved here," said school governor and Llanbadarn county councillor Paul James.

Next week, a top scientist will tell a meeting at Llanbadarn next week that new research reveals that third generation mobile phone base masts can cause headaches and nausea.

Members of the public will be able to get more information about the new mobile phone system from O2 and scientists Alan Preece and Michael Clark at the meeting on 30 October.

Mr Preece, professor of medical physics at Bristol University, will give information on new research in Holland which has revealed that radio signals for third generation mobile phones can cause headaches and nausea.

The mast will be set up at this Dwr Cymru site

The Dutch study found that a test group exposed to third generation mobile base stations felt tingling sensations, suffered headaches and nausea.

But there was no negative impact from the signals for current mobile networks.

Angela Johnson, O2s community relations manager, said that the Aberystwyth mast would not immediately involve third generation technology although it might in the future.

"We are aware of people's concerns but if there is a risk it is one that people think is worth taking because there are 50 million people in the UK who use mobile phones."

A spokesman for the University College of Wales, Aberystwyth said: "We responded to health concerns voiced by staff working at the Penglais campus by serving a notice to quit to O2 and the mast was removed in July."