Antennas

摘要

I work as a part-time volunteer at Amberley industrial museum near Arundel. This museum has an excellent vintage radio exhibition and GB2CPM is an operational amateur station associated with this exhibition. The existing G5RV antenna developed a fault so this seemed a good opportunity to test the multiband dipole described in the April edition of 'Antennas'. There was a spare coax feeder to the existing mast but no materials to hand such as insulators and antenna wire. A considerable amount of construction work had been undertaken during the winter months and I found some high-pressure blue plastic water pipe that seemed to fit the bill. This pipe is very tough and light and was used to make the centre insulator, end insulators and all the spacers.