[CQ-Contest] DX Sprint is a good idea

Tom Osborne w7why at charter.net
Mon Mar 22 19:18:48 EST 2004


50 db gain?  Man, what kind of antennas do that?  Assuming a single
beam did have 10 db, doubling that with 2 would give 13 db and adding
another 2 would bring it up to 16 db.  You would need one heck of a
stack to get 50 db!!  You don't get 10 db every time you add another
beam.
Tom W7WHY

> Apparently you've never operated from the East Coast with dipoles.
>
> A yagi can have on the order of 10dB more gain than a dipole >at the
same height. When stacks are involved, one now has >the ability to
control the  take off angle which can result in >40dB more gain
depending on the propagation. That means >that stacks can be up to
50dB louder than a single dipole at a modest height. And this figure
doesn't even encompass
> all of the other benefits of stacks:



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