On 06/ 5/12 12:26 AM, Magnus Danielson wrote:
On 05/06/12 00:30, Dr. David Kirkby wrote:
This is not exactly a time related question, but I'm sure the subject
must be of interest to time-nuts using GPS.
If one transmits from an antenna such as a helical one, RHCP, can the
same antenna be used
On 07/07/2012 06:21 PM, Dr. David Kirkby wrote:
On 06/ 5/12 12:26 AM, Magnus Danielson wrote:
On 05/06/12 00:30, Dr. David Kirkby wrote:
This is not exactly a time related question, but I'm sure the subject
must be of interest to time-nuts using GPS.
If one transmits from an antenna such as a
On 07/ 7/12 05:43 PM, Magnus Danielson wrote:
On 07/07/2012 06:21 PM, Dr. David Kirkby wrote:
I can confirm that I'm 100% sure that the polarization of the two
antennas needs to be the same - i.e. both RHCP or both LHCP. I built two
of them for RHCP, and got appreciate gain.
Despite what
On 7/7/12 9:21 AM, Dr. David Kirkby wrote:
I can confirm that I'm 100% sure that the polarization of the two
antennas needs to be the same - i.e. both RHCP or both LHCP. I built two
of them for RHCP, and got appreciate gain.
Despite what other may say, there does seem to be a lot of confusion
question about RHCP/LHCP I'm sure a time-nut
can answer
On 07/07/2012 06:21 PM, Dr. David Kirkby wrote:
On 06/ 5/12 12:26 AM, Magnus Danielson wrote:
On 05/06/12 00:30, Dr. David Kirkby wrote:
This is not exactly a time related question, but I'm sure the subject
must be of interest to time
Exactly. Reflections reverse the cp sense
On Jul 7, 2012, at 11:40, Tom Knox act...@hotmail.com wrote:
Thanks for clearing up any confusion Magnus, one more question, are the any
conditions such as reflected signals that can reverse polarization?
Thomas Knox
On 07/07/2012 08:49 PM, Jim Lux wrote:
Exactly. Reflections reverse the cp sense
On Jul 7, 2012, at 11:40, Tom Knoxact...@hotmail.com wrote:
Thanks for clearing up any confusion Magnus, one more question, are the any
conditions such as reflected signals that can reverse polarization?
On 5 June 2012 01:12, Dave Martindale dave.martind...@gmail.com wrote:
I don't think that's correct.
This is a funny topic. No matter where see it discussed, there are
people with different views on it. I looked on the edaforum
http://www.edaboard.com/forum26.html
and found a thread (can't
I guarantee you it doesn't cause any controversy among those that
use circularly polarized antennas.
That the polarization changes from RHCP to LHCP when reflected is
certainly the cause of some confusion about the antennas. A RHCP
antenna that directly emits a wave towards the source will
The easiest way to think about it is to mentally think of the path from
the transmitter to the receiver as a very long piece of threaded rod, and
the wave being emitted as being a nut traveling on the rod.
Ah, and each of the photons then becomes a time nut.
/tvb
Tom Van Baak wrote:
The easiest way to think about it is to mentally think of the path from
the transmitter to the receiver as a very long piece of threaded rod, and
the wave being emitted as being a nut traveling on the rod.
Ah, and each of the photons then becomes a time nut.
Of course!
I
I took a scan through Kraus Antennas since he did much of the
definitive work on Helical antennas. In his chapter on Wave Polarization
he gives a mathematical definition of Left- and Right-circular
polarization, then quickly mentions that the IEEE definition is the
opposite. He has a footnote:
To quote Jasik's treatment of Kraus's work:
There are two kinds of circular polarization, right-hand, and left-hand.
Either
type may be generated by a helical beam antenna, depending on the manner in
which
the helix is wound. A helix wound like a right-hand screw radiates or receives
On 06/ 5/12 04:06 PM, Rex wrote:
I took a scan through Kraus Antennas since he did much of the
definitive work on Helical antennas. In his chapter on Wave Polarization
he gives a mathematical definition of Left- and Right-circular
polarization, then quickly mentions that the IEEE definition is
Hi David,
Since I apparently have no cred, I can give you a quote from Jasik:
A right hand helical antenna transmits or receives right-hand
polarization while a left-hand helical antenna will transmit or
receive left-hand polarization. Jasik, Antenna Engineering Handbook,
First Edition, p17-3.
This is not exactly a time related question, but I'm sure the subject must be of
interest to time-nuts using GPS.
If one transmits from an antenna such as a helical one, RHCP, can the same
antenna be used for reception, or does the helix need to be wound the other way?
If you google this
On 05/06/12 00:30, Dr. David Kirkby wrote:
This is not exactly a time related question, but I'm sure the subject
must be of interest to time-nuts using GPS.
If one transmits from an antenna such as a helical one, RHCP, can the
same antenna be used for reception, or does the helix need to be
I don't think that's correct. A right-hand spiral (however you define
right-hand) remains right-handed if you rotate the whole object in space so
the centre axis of the spiral points in the opposite direction. A
right-handed spiral is converted to a left-handed one only by reflecting it
in a
Not quite.
The definition of right-hand circular polarization, as standardized by
the IRE... is as follows: For an observer looking in the direction of
propagation, the rotation of the electric-field vector in a transverse
plane is clockwise. - Jasik, Antenna Engineering Handbook, First
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