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Something else to keep in mind is that all antennas have a "lowest radiation angle", but they also have 'higher' radiation angles too. It isn't a clearly defined 'hard' cut off point with nothing above or below that particular radiation angle. There's usually -some- radiation at all angles. Maybe not much, but some.
You also have to keep in mind that since there will be at least two antennas involved, transmitting and receiving, you have to factor in the best/worst angles of both.
There's no such thing as a 'DX antenna' and a 'local antenna' as such. Particular antennas may have a radiation pattern that tends to favor what you are trying to do at some particular time, but there's no antenna that does it all every time.
Oh, and then you get to factor in how 'Momma Nature' happens to have her propagation working at any particular time. Pour all that into the mixer and crank the handle. What you get is what's happening at that one particular time. That can change drastically in a very short period of time.
DX and local signals don't always arrive at any particular 'angle', it can happen at almost any angle depending on a very large number of factors. Wait a while, it'll change...
- 'Doc

<blockquote data-quote="W5LZ" data-source="post: 289117" data-attributes="member: 129">Something else to keep in mind is that all antennas have a &quot;lowest radiation angle&quot;, but they also have &#039;higher&#039; radiation angles too.&nbsp; It isn&#039;t a clearly defined &#039;hard&#039; cut off point with nothing above or below that particular radiation angle.&nbsp; There&#039;s usually -some- radiation at all angles.&nbsp; Maybe not much, but some.You also have to keep in mind that since there will be at least two antennas involved, transmitting and receiving, you have to factor in the best/worst angles of both.&nbsp; There&#039;s no such thing as a &#039;DX antenna&#039; and a &#039;local antenna&#039; as such.&nbsp; Particular antennas may have a radiation pattern that tends to favor what you are trying to do at some particular time, but there&#039;s no antenna that does it all every time.Oh, and then you get to factor in how &#039;Momma Nature&#039; happens to have her propagation working at any particular time.&nbsp; Pour all that into the mixer and crank the handle.&nbsp; What you get is what&#039;s happening at that one particular time.&nbsp; That can change drastically in a very short period of time.DX and local signals don&#039;t always arrive at any particular &#039;angle&#039;, it can happen at almost any angle depending on a very large number of factors.&nbsp; Wait a while, it&#039;ll change...&nbsp;- &#039;Doc</blockquote>

[QUOTE="W5LZ, post: 289117, member: 129"] Something else to keep in mind is that all antennas have a "lowest radiation angle", but they also have 'higher' radiation angles too. It isn't a clearly defined 'hard' cut off point with nothing above or below that particular radiation angle. There's usually -some- radiation at all angles. Maybe not much, but some. You also have to keep in mind that since there will be at least two antennas involved, transmitting and receiving, you have to factor in the best/worst angles of both. There's no such thing as a 'DX antenna' and a 'local antenna' as such. Particular antennas may have a radiation pattern that tends to favor what you are trying to do at some particular time, but there's no antenna that does it all every time. Oh, and then you get to factor in how 'Momma Nature' happens to have her propagation working at any particular time. Pour all that into the mixer and crank the handle. What you get is what's happening at that one particular time. That can change drastically in a very short period of time. DX and local signals don't always arrive at any particular 'angle', it can happen at almost any angle depending on a very large number of factors. Wait a while, it'll change... - 'Doc [/QUOTE]

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