Rop believes that the most effective device is that shown on the left of the picture. It can be attached to the cables without 'powering down', using a pole handled from the ground. The clamp is powerful and very good at not moving down the wire once in place. The connector between the white flight diverter and the black clamp assembly uses a swivel bearing which spins in wind speeds upwards of 3 or 4 knots. This is not only an additional deterrent, it also lasts longer. The other, simpler systems break relatively quickly.
The yellow and buff patches on the white rectangle are made from a special luminous material that absorbs light, which improves the systems effectiveness at night for up to ten hours.
Rop is proposing to do a test installation between Sunderland and Rockside with these flight diverters in the next couple of weeks and has invited me along to see what happens and take photographs. The plan is to do an assessment of the numbers required and the locations where they need to be deployed. We will of course keep you updated...
Carl
