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lonestarbandit posted:

"But what real world performance gain over my Imax2000 should be expected?"

if no one knows the radiation efficiency of either antenna then the gain for either antenna cannot be determined. generally speaking, almost any directional antenna is going to be able to outperform an omnidirectional antenna over some range of radiation angles based on the fact that it's "directional."

the sigma IV was advertised as having a maximum directivity of 6.14 dB. and no "i", leaving many to believe that since the "i" did not appear that the dipole must have been the reference antenna, which would be equal to 8.29 dBi but we read in the avanti patent that it was found to produce a maximum directivity of 2.2 dB. over a dipole, 4.35 dBi.. this is hilarious since the directivity for the astroplane was given to be 4.46 dBi.. any reasonable individual at this point would be led to believe that the astroplane outperforms the sigma IV.. think about it.

they're in business for two things, to feed you and sell you on their b.s. and move large amounts of overpriced aluminum.

<blockquote data-quote="freecell" data-source="post: 765787" data-attributes="member: 30">lonestarbandit posted:&quot;But what real world performance gain over my Imax2000 should be expected?&quot;if no one knows the radiation efficiency of either antenna then the gain for either antenna cannot be determined. generally speaking, almost any directional antenna is going to be able to outperform an omnidirectional antenna over some range of radiation angles based on the fact that it&#039;s &quot;directional.&quot;the sigma IV was advertised as having a maximum directivity of 6.14 dB. and no &quot;i&quot;, leaving many to believe that since the &quot;i&quot; did not appear that the dipole must have been the reference antenna, which would be equal to 8.29 dBi but we read in the avanti patent that it was found to produce a maximum directivity of 2.2 dB. over a dipole, 4.35 dBi.. this is hilarious since the directivity for the astroplane was given to be 4.46 dBi.. any reasonable individual at this point would be led to believe that the astroplane outperforms the sigma IV.. think about it. they&#039;re in business for two things, to feed you and sell you on their b.s. and move large amounts of overpriced aluminum.</blockquote>

[QUOTE="freecell, post: 765787, member: 30"] lonestarbandit posted: "But what real world performance gain over my Imax2000 should be expected?" if no one knows the radiation efficiency of either antenna then the gain for either antenna cannot be determined. generally speaking, almost any directional antenna is going to be able to outperform an omnidirectional antenna over some range of radiation angles based on the fact that it's "directional." the sigma IV was advertised as having a maximum directivity of 6.14 dB. and no "i", leaving many to believe that since the "i" did not appear that the dipole must have been the reference antenna, which would be equal to 8.29 dBi but we read in the avanti patent that it was found to produce a maximum directivity of 2.2 dB. over a dipole, 4.35 dBi.. this is hilarious since the directivity for the astroplane was given to be 4.46 dBi.. any reasonable individual at this point would be led to believe that the astroplane outperforms the sigma IV.. think about it. they're in business for two things, to feed you and sell you on their b.s. and move large amounts of overpriced aluminum. [/QUOTE]

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