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probably a better understanding about why fiber-glass antenna is worse can be had by reading the k0bg page on antenna efficiency.
(An antenna with high Q is very efficient, but has more narrow operating bandwidth. cant have both.)
The more material within the field of the coil, the more the Q will be reduced.
Wilson 5000 and predator 10k are good antennas because their coil has high Q.
Fiberglass has poor Q coil because there is so much material around it and the wire size is too small, and it has alot of distributed capacitance. Coil Q is more important than base-load vs center-load.

Like booty said, the ground plane is half the antenna. The best antenna will be garbage if you have ground losses.

[QUOTE="dudmuck, post: 192382, member: 3904"] probably a better understanding about why fiber-glass antenna is worse can be had by reading the k0bg page on antenna efficiency. (An antenna with high Q is very efficient, but has more narrow operating bandwidth. cant have both.) The more material within the field of the coil, the more the Q will be reduced. Wilson 5000 and predator 10k are good antennas because their coil has high Q. Fiberglass has poor Q coil because there is so much material around it and the wire size is too small, and it has alot of distributed capacitance. Coil Q is more important than base-load vs center-load. Like booty said, the ground plane is half the antenna. The best antenna will be garbage if you have ground losses. [/QUOTE]

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