Following your article "The Terror of Tetra masts" (The Argus, May 3), people should be aware that at least seven Tetra masts have been identified in Brighton.

They are situated on top of the Royal Sussex County Hospital, Brighton police station and Theobald House in Blackman Street and at the racecourse, Carden Avenue, the Fairway trading estate in Mouselcoomb and off Dyke Road.

Only the vigilance of Green councillors has revealed these masts since they have been erected in total secrecy.

Although O2 Airwave - the company contracted to put up Tetra masts nationwide - has a Memorandum of Agreement with the Government to consult with local councils, schools and interested parties over their siting and to provide councils with siting and proposed operational details, they do not generally consult and take none of the other above mentioned legally binding actions. O2 Airwave has been challenged in Parliament for its tactics by the Public Accounts Committee and others.

In 2002, a year after Manchester Police began using Tetra, a survey by Lancashire Police Federation revealed that more than 170 police officers had become ill with typical mobile-related conditions including skin blisters, rashes, migraines, nausea, vomiting, sleep disorders, body warming and cancer.

When shown the report, Mireille Levy, then Home Office health and safety officer in charge of Tetra, said: "I do not believe they are ill. They are not ill enough to stop this trial. Nothing will stop Tetra. If the officers don't like it they can resign".

In Littlehampton, Shoreham, Bognor Regis and Worthing, since these masts were switched on, residents have complained of severe headaches, nosebleeds, nausea and sleeplessness as well as TV interference.

One police officer's very young and healthy son pressed "transmit" on his fathers Tetra handset and instantly had his first ever epileptic fit.

Concerned professional Dr Graeme Blackwell warns of cancer and motor neurone disease risks to people living or working within a mile of Tetra masts and campaign groups Mast Sanity, Powerwatch and Protect Sussex From Tetra are asking for the system to be completely scrapped.

Brighton Green councillors have arranged a public meeting on Friday at the City Gate centre, London Road, Brighton, 7.30-9.30pm.

-Graham Parfitt, Brighton