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CEBIK got a little more gain changing to a physical coil, he thought part of that was the increased spacing,

Grazioli make 2 claims for gain,

In the Electrical data it says 5.65 dbi ( no frequency specified )
very close to your model a fiddle with the ground could find the difference or a physical coil maybe,

The model says total gain 6.48dbi @27.5mhz & 11mtrs above real ground,
can ground type do that ?

could be that you are not selling them

[QUOTE="bob85, post: 855279, member: 18"] CEBIK got a little more gain changing to a physical coil, he thought part of that was the increased spacing, Grazioli make 2 claims for gain, In the Electrical data it says 5.65 dbi ( no frequency specified ) very close to your model a fiddle with the ground could find the difference or a physical coil maybe, The model says total gain 6.48dbi @27.5mhz & 11mtrs above real ground, can ground type do that ? could be that you are not selling them:oops: [/QUOTE]

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