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Robb I did an antenna comparision yesterday with ZL1BI,


I have the IMAX 60" to the feed piint on top of the tower, The fan dipole 20/40/80 meters is at 56' to feed point.


The Imax RS was a 5-3 to Col using 100 watts.


The Fan dipole using the 3rd harmonic on the 40 meter leg was also an RS of  5-3 with the same 100 watts. The dipole is oriented so the major lobe works into EU and S. Pacific.


 Verticals, If installed correctly, radiate rather well in all directions.


 Try a 40 meter vertical for dx, ground mount it with say around 24 to 36 ground radials. 


 More times than I care to count the ground mounted vertical had a better RS report than the two element 40 meter yagi.


The yagi was at 70 ft up the tower, the vertical was 8 inches off the ground at the feed point. The vert was the go to antenna for working DX in EU.


 A good vert is hard to beat especially on the lower HF bands.