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Captain, you raise an interesting point concerning the 3 db loss in TX with dual polarization. While in almost every case, gain is reciprocal in TX and RX, I see your point in this application where it just may be possible that this loss is not experienced in RX. Do you know of any references that would confirm this idea? I think you are correct since the matching polarized element should be able to capture just as much signal when combined with the second element in the wrong polarization.

If you run dual polarization and like the reduction in fade you see with DX signals, consider circular polarization instead. It seems we already acknowledge the fact the DX signal is always shifting its polarization and rarely in a perfect vertical or horizontal polarity. It's just as likely to be in between the two as it is in any one fixed polarization.

Simply delaying the phase by 90 degrees to either element with allow you to be in ALL polarizations simultaneously. All you need to do is add an electrical 1/4 wave of cable to one feedline (assuming both feed lines were the exact same length to start with). To correct the 25 ohm parallel impedance of both elements, a co phased 75 ohm matching harness should be used.

<blockquote data-quote="Shockwave" data-source="post: 306021" data-attributes="member: 10882">Captain, you raise an interesting point concerning the 3 db loss in TX with dual polarization. While in almost every case, gain is reciprocal in TX and RX, I see your point in this application where it just may be possible that this loss is not experienced in RX. Do you know of any references that would confirm this idea? I think you are correct since the matching polarized element should be able to capture just as much signal when combined with the second element in the wrong polarization.If you run dual polarization and like the reduction in fade you see with DX signals, consider circular polarization instead. It seems we already acknowledge the fact the DX signal is always shifting its polarization and rarely in a perfect vertical or horizontal polarity. It&#039;s just as likely to be in between the two as it is in any one fixed polarization.Simply delaying the phase by 90 degrees to either element with allow you to be in ALL polarizations simultaneously. All you need to do is add an electrical 1/4 wave of cable to one feedline (assuming both feed lines were the exact same length to start with). To correct the 25 ohm parallel impedance of both elements, a co phased 75 ohm matching harness should be used.</blockquote>

[QUOTE="Shockwave, post: 306021, member: 10882"] Captain, you raise an interesting point concerning the 3 db loss in TX with dual polarization. While in almost every case, gain is reciprocal in TX and RX, I see your point in this application where it just may be possible that this loss is not experienced in RX. Do you know of any references that would confirm this idea? I think you are correct since the matching polarized element should be able to capture just as much signal when combined with the second element in the wrong polarization. If you run dual polarization and like the reduction in fade you see with DX signals, consider circular polarization instead. It seems we already acknowledge the fact the DX signal is always shifting its polarization and rarely in a perfect vertical or horizontal polarity. It's just as likely to be in between the two as it is in any one fixed polarization. Simply delaying the phase by 90 degrees to either element with allow you to be in ALL polarizations simultaneously. All you need to do is add an electrical 1/4 wave of cable to one feedline (assuming both feed lines were the exact same length to start with). To correct the 25 ohm parallel impedance of both elements, a co phased 75 ohm matching harness should be used. [/QUOTE]

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