[GreenKeys] RF Polarity

[Larry Tighe]

Thanks for all the great answers received on using my military RT-524 on 6 
meters....horizontal/vertical.  All the folks on the freq seem to be 
vertical.  I'm changing my homebrew 3 element to vertical.

I like to share an answer that is a summation of all the answers I 
received....this one is from Ralph.  Thanks to all.....
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Yes, it can have a very large effect.  Around 15 to 20 dB in actual usage.
Theory says about 20 db.  From actual usage I can tell you that it will have
a very large effect if using ground wave.  If the signal reflects off the
ionosphere then the signal will not  usually be that much differant.  If the
signals arrive at 45 deg or less to the antenna , the loss is only 3 db or
less.  While I am sure the effect would be the same on all frequencies,
below 20 mhz or so the signal is usually propogated by skywave and the
ionosphere will usually rotate the signal so it will not stay exectally
vertical or horizontal so that much effect is not normally observed.

de KU4PT