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your imax has the upper lobe dominating which is what i have seen in other peoples models of 5/8 groundplanes at a similar height above ground,

he could isolate and choke the imax with radials to see if cm currents which the gainmaster supposedly has in check are to blame,
the mast is a little higher than the surrounding single story houses, the antennas are about the same length yet the gm clearly has the edge over the imax at my location or his, maybe adding a mast to the imax model would reveal why that may be.

[QUOTE="bob85, post: 310731, member: 18"] your imax has the upper lobe dominating which is what i have seen in other peoples models of 5/8 groundplanes at a similar height above ground, he could isolate and choke the imax with radials to see if cm currents which the gainmaster supposedly has in check are to blame, the mast is a little higher than the surrounding single story houses, the antennas are about the same length yet the gm clearly has the edge over the imax at my location or his, maybe adding a mast to the imax model would reveal why that may be. [/QUOTE]

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