On 3/4/2016 1:51 PM, Dan Maguire via Topband wrote:
There are some fairly detailed 8-circle modeling studies in the last section on
this page:
http://ac6la.com/aecollection6.html
Lots of illustrations and several url links for more info.
Dan, AC6LA
http://ac6la.com
_
Topband
Rick Karlquist wrote:
>>> Models well on EZNEC.
There are some fairly detailed 8-circle modeling studies in the last section on
this page:
http://ac6la.com/aecollection6.html
Lots of illustrations and several url links for more info.
Dan, AC6LA
http://ac6la.com
_
Topband
On Fri,3/4/2016 9:38 AM, Ray Higgins (W2RE) wrote:
Im looking for both spacing and phasing for 80M and 160M 8 Circle array for a
QTH in Maine. I cant seem to find much information by searching online. Can
someone point me in the right direction.
Hi Ray,
There are several ways to get
On 3/4/2016 10:46 AM, Ray Higgins (W2RE) wrote:
Let me clarify, Im looking for 160M and 80M TRANSMIT 8 circle array not RX
array.
Ray Higgins
W2RE.com
You asked about spacing and phasing. There is absolutely
no reason why you can't also use the same spacing and phasing
(as my receive
It seems as though if data were taken as to categorize the (average or
typical) noise temperature with the angle of intensity of atmospheric noise
that this could be utilized as part of the RDF equation.
For instance, if at 20 degrees, the noise temperature was 5 dB higher than
at 80 degrees, then
"K1FZ-Bruce" wrote:
> IV3PRK at HC1PF with the help of friends proved with extensive research and
> modeling,
> that a BOG antenna is a tuned circuit not a traveling wave antenna.
BOG is a traveling wave (Beverage) antenna at its best.
If some "tunning" artefacts were
This statement is to say that, if the earth is used instead of radials,
the longer/ or a number of rods is better than one very short rod.
On Fri, 04 Mar 2016 19:28:46 +0100, shristov wrote:
donov...@starpower.net wrote:
The correct URL is: www.qsl.net/k1fz/bogantennanotes.html
Let me clarify, Im looking for 160M and 80M TRANSMIT 8 circle array not RX
array.
Thanks,
Ray Higgins
W2RE.com
_
Topband Reflector Archives - http://www.contesting.com/_topband
On 3/4/2016 9:38 AM, Ray Higgins (W2RE) wrote:
Im looking for both spacing and phasing for 80M and 160M 8 Circle array for a
QTH in Maine. I cant seem to find much information by searching online. Can
someone point me in the right direction.
Ray Higgins
W2RE.com
I am currently building a
donov...@starpower.net wrote:
> The correct URL is:
> www.qsl.net/k1fz/bogantennanotes.html
>From that page:
Because the BOG is "trying" to develop signal voltage between the wire and
the earth it sits upon
This is misleading at best.
The voltage results from the current flowing in the
Hi JC,
I am trying to give you that information.
It is in IV3PRK's research. At the bottom of the page, please read both his
research link, and his modeling link.
www.qsl.net/k1fz/bogantennanotes.html
73
Bruce-k1fz
On Fri, 4 Mar 2016 13:13:40 -0500, JC wrote:
>that a
>that a BOG antenna is a tuned circuit not a traveling wave antenna. <
Hi Bruce, I am missing something here, can you elaborate on that statement?
73
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
Hi Frank
I agree with you. I'm near Fort Lauderdale in a city lot, directivity from
my Vertical WF did help me a lot on 160, some rare DX like 4W6 was possible
only direct and using the vertical WF. 9M0 first time was also direct using
the VWF but next year 9M4 was only possible to work using
The correct URL is:
www.qsl.net/k1fz/bogantennanotes.html
- Original Message -
From: "K1FZ-Bruce"
To: "Topband"
Sent: Friday, March 4, 2016 5:54:09 PM
Subject: Topband: WEB address correction: : RDF in the real-world
IV3PRK at
Hello JC and others,
I must take a little issue on being able to measure the vertical arrays.
While it may be true that it is hard to measure, you can indeed see the pattern
quite well by looking at different stations and switching around the compass.
It does not take long before you can
IV3PRK at HC1PF with the help of friends proved with extensive research and
modeling, that a BOG antenna is a tuned circuit not a traveling wave antenna.
Please see the IV3PRK research and modeling links at the bottom of my BOG
antenna page www.bogantennanotes.html
73
Bruce-k1fz
IV3PRK at HC1PF with the help of friends proved with extensive research and
modeling, that a BOG antenna is a tuned circuit not a traveling wave antenna.
Please see the IV3PRK research and modeling links at the bottom of my BOG
antenna page www.bogantennanotes.html
Hi Carl
Yes, the concept is assuming equal density noise spread uniform. However there
air point everybody wants to hide. Vertical polarized antennas based on phasing
elements does change directivity and does have interaction with others vertical
elements. It is hard to measure it because you
Hi Roger,
Pretty easy to build your own hi pass RX filter, and here is a link to a
simple website I created that documents one of my builds which might give
you some ideas (I use a dremel tool to quickly create the circuit board).
http://sites.google.com/site/lwmwbandrejectfilter/
73,
Don
I agree. There are times, especially in disturbed condx, when my BOG
antennas are "head and shoulders" better than my other antennas.
73
Bruce-K1FZ
www.qsl.net/k1fz/bogantennanotes.html
I can't vouch for JC's numbers (his numbers may be QTH
specific), but the
concept is
The RDF seems to be the best we have at the moment, for taking a
3-dimensional pattern and turning it into a single number. Of course the
details of the 3-dimensional pattern are lost.
In addition to the quantitative RDF or S/N numbers, the qualitative change
in pattern as you move up the RDF is
Rick N6RK said:
> In this webinar, it was asserted (without explanation) that
> for every 1 dB increase in RDF, you get 1.5 to 2.0 dB
> improvement in S/N ratio. I've never heard that before
> and don't even see how it makes sense. Actually, I don't
> even know how you can make generalizations
Hi Rick
As I told in the webinar it is a measured practical result, not a math
calculation.. I have a DDC SRD and several receiving antennas in a very
clean environment, only one TX antenna detuned, not other tower or Yagi etc.
I can switch from one receiving antenna to another and see how
Don,
The use of that spectrum by others has reduced very significantly. I cannot
say that there are no other users, but it's not like it used to be when the
current spectrum allocations were originally agreed.
That is the reason that IARU raised the matter as a potential agenda item
for WRC 19.
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