DEAR EDITOR, - A very informative talk was given on Wednesday, May 18th, at Picton Community Centre by John O'Brien, of Tetrawatch, who is an expert in the TETRA field of communion.

His presentation left us, his rapt audience, both horrified and enlightened by what we heard.

Tempered with this, however, was renewed hope and confidence in persevering with our campaign to re-site the Tetra mast, currently on Haverfordwest police station, to a less contentious site.

As protesters against Tetra we feel we are following the right route to get this mast moved from an area populated by nine schools to a site well away from our vulnerable children.

PHENIAH PATTERSON KERSTIE WATSON 25 Dew Street, Haverfordwest.