The signal from the SMALL  mast is 5 db stronger than the LARGE  Decca
tower.
As I mentioned in an earlier bulletin the comparison test is flawed. The
large tower is vertical and the small antennas is but a LONG wire 9
metres above ground. Still puzzled why the small antenna is putting out
a stronger signal. I would suspect the matching network to the large
tower is poor or the large antenna is acting as a reflector, especially
if a PA0 station reports the opposite.
G3KEV