Public domain edition also available in downloadable Format:
http://snulbug.mtview.ca.us/books/RadioAntennaEngineering/
73 Gary NL7Y
> Herb,
>
> Radio Antenna Engineering, published in 1952. It was written by Edmund
> Laport. It is available from
> Lulu Enterprises
> 3101 Hillsborough Street
>
Herb,
Radio Antenna Engineering, published in 1952. It was written by Edmund
Laport. It is available from
Lulu Enterprises
3101 Hillsborough Street
Raleigh, NC 27607
73 Price W0RI
Mark,
With all due respect to your comments.I want to know what I am building
and why it is worth the eff
- Original Message -
From: "Herb Schoenbohm"
To: "W0UCE"
Cc: "'topband reflector'"
Sent: Saturday, February 11, 2012 12:42 PM
Subject: Re: Topband: Amazing Video of an extremely large circular array
> Jack,
>
> As the all band demand would increase the load from a 100 users to
> thou
.
> I remember when 160 meter and EME enthusiast Sam Harris (forgot his
> call) used the Arecibo Space Telescope for moon bounce. His efforts
> began a whole new resurgence of interest in this communications mode.
> now even some DX-peditions are trying it.
That was the birth of EME, not a resurg
Mark,
With all due respect to your comments.I want to know what I am
building and why it is worth the effort before I commence. Accordingly
discussion on this reflector is invaluable digesting the pros and cons
of any ideas. I can learn so much here without digging into Maxwells
Equation
Please do not abuse my wording. Or maybe I need to clarify.
I DO welcome any discussion on exsting and new proposed antenna/ground systems.
However, discussions tend to be jammed by people throwing in basic theories,
papers, even laws of physics from those who seem to oppose a (valid) new idea
I've always had a problem trying to hang an inverted L across my lot, as I
have many trees, but only a couple that are about 40' high, and they are in
close proximity of each other.
I do run an inverted L from my back yard, over the top of my house (36'
high) and into a small tree in the fr
I'm with you !
The delete key on the keyboard is for deleting.
But I use the mouse button (open) on this list,
and devour every bit of information.
I assume I am in the majority here. To often we
bow to minority opinion, being the gentlemen that we
are.
BTW, yesterday morning I called CQ/Q
On 2/11/2012 3:32 PM, ZR wrote:
> .
>> I remember when 160 meter and EME enthusiast Sam Harris (forgot his
>> call) used the Arecibo Space Telescope for moon bounce. His efforts
>> began a whole new resurgence of interest in this communications mode.
>> now even some DX-peditions are trying it.
>
I disagree completely! I can quote a Chinese sage and author, his name
escapes me.."A person can earn more talking to an intelligent man
for an hour than by reading volumes for decades." I learn something
with most of the posts and hope they continue because this is what this
reflector
On 02/11/2012 01:12 PM, k2...@juno.com wrote:
> Hi Jack,
>
> Are you saying that the FCP works just as well as
> an elevated or buried radial field???
>
> I was under the impression that the FCP was just a way
> to get on 160 when there wasn't room for a radial field...
The FCP, and also the doubl
Dear moderator
Mark PA5MW said:
..."It is time to stop talking"
I agree absolutely.
Maybe it's hard but all of us have a copy of ARRL Antenna Book or Low
Band DXing. I think that it's enough for the 50% of us.Read, study and
act.
Let's help the reflector to be helpful for everyone. There are
I just posted some pictures of the US version of the
woodpecker OTH radar on my personal web page.
The Christmas Valley OR transmitter site is only
about 100 Miles from my QTH. It was a site to behold.
Personally, at1 Megawatt TX power I am glad they
did not operate this one near here.
ht
I agree.
What I don't understand is how people
don't understand that "UP" means transmit
up in freq. Yes, some forget to switch
Xmit freq & call on the DX who is saying
"UP 3". Got it... but when the "police"
send your call on the DX Xmit freq & then
tell you to transmit "UP" in the same
b
O... I smell a lot of kit building
in the future!
Gary - KA1J
> On Fri, Feb 10, 2012 at 7:59 AM, chacuff wrote:
>
> > Or move to the new Topband500Khz
>
> Exactly. For those that missed it - there is more here:
>
> http://www.arrl.org/news/world-radiocommunication-conference
I just turned my webcam around and snapped a pix of the
proposed array location. How can I resist that low take
off angle on 160? Dreams, Ah.
"http://www.k7tjr.com/culver_cam.htm";
Lee K7TJR
From: W0UCE
Sent: Saturday, February 11, 2012 10:10 AM
To: 'Lee K7TJR' ; he...@vitelcom.net
Cc:
Hi Jack,
Are you saying that the FCP works just as well as
an elevated or buried radial field???
I was under the impression that the FCP was just a way
to get on 160 when there wasn't room for a radial field...
Thanks for any feedback.
73,
Ted K2QMF
On Sat, 11 Feb 2012 12:39:35 -0500 "W0UC
That would be great Lee but one system won't be enough, you will need to put
up any number of systems so subscribers can be assured what is spotted can
be heard in their area...
Go for it...
73,
Jack
-Original Message-
From: Lee K7TJR [mailto:k7...@msn.com]
Sent: Saturday, Fe
Ag, Herb you have stumbled on to the idea we have joked
about here for some time. A pair of 8 element RX arrays for
diversity receive served up by subscription on the internet.
Located on top the double peaked 1200 foot hill 2 miles south
of the shack here of course. I can dream cant I?
Jack,
As the all band demand would increase the load from a 100 users to
thousands, I guess it would be up to the system capacity and if the
antennas are capable of the bandwidth requirement at one given moment
without compromise. Maybe it would be done by subscriptions with on
line payment o
Bill:
Why struggle with or even bother putting down radials when you can use a
Folded Counterpoise?
Click on the link below for details:
http://www.w0uce.net/K2AVantennas.html
I will be putting up a stick
as tall as I can, with some sort of loading/matching, AND, as many
radials
Here's the product no topbander should be without:
http://www.cafepress.com/bentwire.394449163
For the record, I have no fiduciary or otherwise financially beneficial
relationship with Dr. DX.
73 de w4kaz
___
UR RST IS ... ... ..9 QSB QSB - hw? BK
Hi,
Trying to get up on top band on my small lot (free of antenna
'covenants') has forced the issue for me. I will be putting up a stick
as tall as I can, with some sort of loading/matching, AND, as many
radials as I live long enough to put down. That for transmit. I will use
separate receive ante
Amazing. Nano antennas aren't new but this guy presents them in an odd way, as
if they form a mystical improvement to normal antennas. His starting comments
are telling regarding the implied lossy nature of conventional cell phone
antennas as he cites the heat as proof as the lossiness. The fac
I currently use the spray on my patio, lawn and driveway as a ground system. It
works so well I took down my elevated radial system which made my XYL very
happy. Now I have a much more efficient antenna AND a much happier wife. I
have worked more DX on 160 this season than in all prior years co
Herb:
If any organization or individual is fortunate enough to gain access to a
CDAA there is no reason to limit use of SDR to 160 meters, any band 160 - 10
would benefit.
73,
Jack
Since some of these large antenna sites are no longer used it could be
an ideal location for a SRD receiver feed
I have a question for the radial experts out there.
If I spray this stuff on my radials - will it improve my signal on 160
meters?
It seems that this would help my signal reach its "happy spot" and "launch
out into space".
http://www.engadget.com/2012/02/11/spray-on-antenna-revealed-best-thing-t
Since some of these large antenna sites are no longer used it could be
an ideal location for a SRD receiver feed (for 160 meters only) and with
sufficient delay during contests to avoid their misuse, as a means to
study propagation.A lease under a radio club would be an awesome
experience t
I think your take - knowing what the distribution is - is a worthy
consideration, Tod. Using a technique called Bernard's approximation and
given, oh, six to ten data points, and some graphing paper one could complete a
"in the ball park" analysis of the type of distribution. Is it a Weibull
On 2/11/2012 8:01 AM, W2PM wrote:
> New antenna models arenas ideas for them are one thing, but new laws of
> physics? It's great to experiment but you can only work around the
> fundementals. Discovering new principals is always in play, but that is very
> different from new configurations of m
I wish I had taken Pics of our Rhombic Antenna farm at Camp Darby near
Livorno (Leghorn) Italia
At the Xmtr site we had Rhombic ant. in every direction 360 ft on a side
wit three wires on each leg the dissipation line was four 1/8" nichrome
wires. The rcvr site had smaller Rhombic's two f
Ludek,
congrats for excellent job!!!
You arranged very nice setup even although the wx was against as same
as condx.
Hope to see You on TB soon.
73 - Petr, OK1RP
On Sat, 11 Feb 2012 08:20:42 +0100, "Luděk Odehnal OK2ZC OK3C"
said:
> web info
> http://www.ok5z.cz/news/cqww-2012-pote/
>
> pict
New antenna models arenas ideas for them are one thing, but new laws of
physics? It's great to experiment but you can only work around the
fundementals. Discovering new principals is always in play, but that is very
different from new configurations of metal. Even fractal antenna technology is
Radials do not affect the angle of radiation.
Dave WX7G
On Sat, Feb 11, 2012 at 4:14 AM, Doug Turnbull wrote:
> Bob,
>I found the NCJ article (http://www.ncjweb.com/k3lcmaxgainradials.pdf)
> most interesting - thank you. I wonder if there is also an affect on the
> angle of radiation wi
Bob,
I found the NCJ article (http://www.ncjweb.com/k3lcmaxgainradials.pdf)
most interesting - thank you. I wonder if there is also an affect on the
angle of radiation with ground radial numbers. Is the issue solely one of
gain and feed point impedance?
At the moment I am helping a frie
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