Right.... looks like I'm homing in on something.... 40m long radials no good. Just shortened to 30m (8 radials only) and get something close to Tom's results. My results are -0.86dBi at 24 degrees, -4.66dBi at 6 degrees. With radials of 4m length I'm getting -2.04dBi at 24 degrees, -5.95dBi at 6 degrees, av gain 0.203). This is with antenna just over 3m AGL. If I lower the antenna to 0.5m above AGL, the the long radials are giving results of -7.07dBi @ 24 degrees and -10.98dBi @ 6 degrees (av gain 0.064). The short radials are giving results of -6.7dBi @ 24 degrees and -10.64dBi @ 6 degrees (av gain 0.07). But if I reduce the number of radials to 4, then the long radials again come out a lot worse than the shorties! I'll keep fiddling over the w/end.