I've been studying loop antennas for some time now and I don't recall a
mention of polarization. I would think that a loop antenna mounted
vertically would provide a vertically polarized signal. Is that right?

--

Rick C

On 2016-08-20, rickman wrote:
I've been studying loop antennas for some time now and I don't recall a
mention of polarization. I would think that a loop antenna mounted
vertically would provide a vertically polarized signal. Is that right?

Fed at the bottom it is horizontal polarization. Fed on the side it becomes
vertical polarization. You might also enjoy looking at vertical delta loops
and the way they can be mounted and fed.

....Edwin
__________________________________________________ __________
"Once you have flown, you will walk the earth with your eyes
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return."-da Vinci http://kd5zlb.org

On 8/21/2016 10:18 AM, Edwin Johnson wrote:
On 2016-08-20, rickman wrote:
I've been studying loop antennas for some time now and I don't recall a
mention of polarization. I would think that a loop antenna mounted
vertically would provide a vertically polarized signal. Is that right?

Fed at the bottom it is horizontal polarization. Fed on the side it becomes
vertical polarization. You might also enjoy looking at vertical delta loops
and the way they can be mounted and fed.

Yes, of course, I should have been able to figure that out for myself.
The small loop looks like a very short dipole.

Thanks

--

Rick C

On Sun, 21 Aug 2016, Edwin Johnson wrote:

On 2016-08-20, rickman wrote:
I've been studying loop antennas for some time now and I don't recall a
mention of polarization. I would think that a loop antenna mounted
vertically would provide a vertically polarized signal. Is that right?

Fed at the bottom it is horizontal polarization. Fed on the side it becomes
vertical polarization. You might also enjoy looking at vertical delta loops
and the way they can be mounted and fed.

Now that makes sense, the same thing happens with quad antennas.

But, there is the case of loops with the area placed in parallel with the
earth. Those are horizontally polarized. I'm suddenly blank about what
they were called, but fifty years ago it wasn't uncommon to see such
horizontal loops on cars, for 2M and 6M use, since this was before FM so
"base" antennas were generally horizontally polarized.

Michael

In article ple.org,
says...



But, there is the case of loops with the area placed in parallel with the
earth. Those are horizontally polarized. I'm suddenly blank about what
they were called, but fifty years ago it wasn't uncommon to see such
horizontal loops on cars, for 2M and 6M use, since this was before FM so
"base" antennas were generally horizontally polarized.

Michael

They were called halos. They were horizontal polarized. If mounted a
fraction of a wavelength over a conducting surface then they became DDRR
antennas (directional discontinuity ring radiator)and vertical
polarized.




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On Sun, 21 Aug 2016 23:18:39 -0400, Ralph Mowery
wrote:


In article ple.org,
says...



But, there is the case of loops with the area placed in parallel with the
earth. Those are horizontally polarized. I'm suddenly blank about what
they were called, but fifty years ago it wasn't uncommon to see such
horizontal loops on cars, for 2M and 6M use, since this was before FM so
"base" antennas were generally horizontally polarized.

Michael

They were called halos. They were horizontal polarized. If mounted a
fraction of a wavelength over a conducting surface then they became DDRR
antennas (directional discontinuity ring radiator)and vertical
polarized.


Don't forget Squalos (same as halos, but the loop was squared off). I
have no idea why I remember that. Must have been advertised in QST.

On Sun, 21 Aug 2016, Ralph Mowery wrote:


In article ple.org,
says...



But, there is the case of loops with the area placed in parallel with the
earth. Those are horizontally polarized. I'm suddenly blank about what
they were called, but fifty years ago it wasn't uncommon to see such
horizontal loops on cars, for 2M and 6M use, since this was before FM so
"base" antennas were generally horizontally polarized.

Michael

They were called halos. They were horizontal polarized. If mounted a
fraction of a wavelength over a conducting surface then they became DDRR
antennas (directional discontinuity ring radiator)and vertical
polarized.

In the middle of the night the name came to me. And yes, there were those
DDRR antennas that mounted on car roofs with suction cups.

Michael

On Mon, 22 Aug 2016, Pat wrote:

On Sun, 21 Aug 2016 23:18:39 -0400, Ralph Mowery
wrote:


In article ple.org,
says...



But, there is the case of loops with the area placed in parallel with the
earth. Those are horizontally polarized. I'm suddenly blank about what
they were called, but fifty years ago it wasn't uncommon to see such
horizontal loops on cars, for 2M and 6M use, since this was before FM so
"base" antennas were generally horizontally polarized.

Michael

They were called halos. They were horizontal polarized. If mounted a
fraction of a wavelength over a conducting surface then they became DDRR
antennas (directional discontinuity ring radiator)and vertical
polarized.


Don't forget Squalos (same as halos, but the loop was squared off). I
have no idea why I remember that. Must have been advertised in QST.

It all came back in the middle of the night. I think the Squalo was a
commercial antenna, from Hygain or whatever. But the halo was in the
antenna books too, so you could build or buy. I still have a Saturn 6 in
the basement, a stacked set of 3 halos.

Michael

In article ple.org,
says...

It all came back in the middle of the night. I think the Squalo was a
commercial antenna, from Hygain or whatever. But the halo was in the
antenna books too, so you could build or buy. I still have a Saturn 6 in
the basement, a stacked set of 3 halos.

Michael

If that is the antenna I remember, the halos are not really stacked,but
it does loop around 3 times to make the full length of the antenna
instead of being a couple of feet in diameter that a true 6 meter halo
would be.




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On 08/20/2016 04:39 PM, rickman wrote:
I've been studying loop antennas for some time now and I don't recall a
mention of polarization. I would think that a loop antenna mounted
vertically would provide a vertically polarized signal. Is that right?


Finally, someone on the ng said "loop antennas". You can't be a ham
because you didn't say "magnetic loop" ;-). Sincerely, and 73s from N4GGO,

--
J. B. Wood e-mail: