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To make a long argument shorter, all I can say is if the 5/8 wave worked better, I'd be producing 5/8 wave broadcast antennas without a doubt. I could save thousands on Teflon gamma match material and extra aluminum tubing in each production run. There aren't too many applications where it is more important to have accurate gain figures then when filing a construction permit for a broadcast station.

With respect to differences in gain with ground plane antennas, there is a wide range. To say all verticals are similar and you need a beam to realize gain is false. Just going from an end fed half wave to a 5/8 wave is noticeable. Try going from a 1/4 wave to 7/8 wave.

Someone mentioned the full wave quad loop. I think it's interesting to note that the stock 7/8 wave Vector and the full wave quad loop have the same gain of 2 dbd. Except the quad is only bi-directional and the Vector is Omni. Hey Bob, sounds to me that Cebik's non apparent collinear theory may be right on.

<blockquote data-quote="Shockwave" data-source="post: 171395" data-attributes="member: 10882">To make a long argument shorter, all I can say is if the 5/8 wave worked better, I&#039;d be producing 5/8 wave broadcast antennas without a doubt. I could save thousands on Teflon&nbsp; gamma match material and extra aluminum tubing in each production run. There aren&#039;t too many applications where it is more important to have accurate gain figures then when filing a construction permit for a broadcast station.With respect to differences in gain with ground plane antennas, there is a wide range. To say all verticals are similar and you need a beam to realize gain is false. Just going from an end fed half wave to a 5/8 wave is noticeable. Try going from a 1/4 wave to 7/8 wave.Someone mentioned the full wave quad loop. I think it&#039;s interesting to note that the stock 7/8 wave Vector and the full wave quad loop have the same gain of 2 dbd. Except the quad is only bi-directional and the Vector is Omni. Hey Bob, sounds to me that Cebik&#039;s non apparent collinear theory may be right on.</blockquote>

[QUOTE="Shockwave, post: 171395, member: 10882"] To make a long argument shorter, all I can say is if the 5/8 wave worked better, I'd be producing 5/8 wave broadcast antennas without a doubt. I could save thousands on Teflon gamma match material and extra aluminum tubing in each production run. There aren't too many applications where it is more important to have accurate gain figures then when filing a construction permit for a broadcast station. With respect to differences in gain with ground plane antennas, there is a wide range. To say all verticals are similar and you need a beam to realize gain is false. Just going from an end fed half wave to a 5/8 wave is noticeable. Try going from a 1/4 wave to 7/8 wave. Someone mentioned the full wave quad loop. I think it's interesting to note that the stock 7/8 wave Vector and the full wave quad loop have the same gain of 2 dbd. Except the quad is only bi-directional and the Vector is Omni. Hey Bob, sounds to me that Cebik's non apparent collinear theory may be right on. [/QUOTE]

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