Photo was taken before some corrections were made to antenna, big and small loops were not in clock wise direction from top to bottom (actually one of the loop was in opposite direction & produced very noisy image). Due to simplicity of design loop correction was done in few min.
Visit the authors page to see details of antenna. http://www.m0nde.co.uk/CVLQFA.htm
Modified QFH by G4ILO http://www.g4ilo.com/qfh.html