27;s a pic from some years back:
>> http://www.californiacoastline.org/cgi-bin/image.cgi?image=200604964&mode=big&lastmode=sequential&flags=0&year=2006
>>
>> 72, Jim Rodenkirch, K9JWV
>>
>>
>>
>>
>>
>>> From: w0...@nc.rr.com
>&
p;year=2006
>
> 72, Jim Rodenkirch, K9JWV
>
>
>
>
>
>> From: w0...@nc.rr.com
>> To: topband@contesting.com
>> Date: Fri, 10 Feb 2012 10:30:10 -0500
>> CC: donov...@starpower.net
>> Subject: Re: Topband: Amazing Video of an extremely large circular a
- 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 d
.
> 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
...@vitelcom.net
Cc: topband@contesting.com
Subject: RE: Topband: Amazing Video of an extremely large circular array
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 th
urday, February 11, 2012 1:02 PM
To: he...@vitelcom.net; W0UCE
Cc: topband@contesting.com
Subject: Re: Topband: Amazing Video of an extremely large circular array
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
dive
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
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
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 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
x27;t know if the
system was operational that early or if they were just testing it.
73 Charlie N8RR
> From: donov...@starpower.net
> To: topband@contesting.com
> Date: Fri, 10 Feb 2012 12:56:36 -0500
> Subject: Re: Topband: Amazing Video of an extremely large circular array
>
/04images/Krug/Duga_3_8263025.jpg
73
Frank
W3LPL
Original message
>Date: Fri, 10 Feb 2012 09:02:40 -0700
>From: James Rodenkirch
>Subject: RE: Topband: Amazing Video of an extremely large circular array
>To: ,
>Cc:
>
> And, here's more info than you
And, here's more info than you might need but, some block diagram sort of
drawings:
http://www.navy-radio.com/frd10.htm
From: w0...@nc.rr.com
To: topband@contesting.com
Date: Fri, 10 Feb 2012 10:30:10 -0500
CC: donov...@starpower.net
Subject: Re: Topband: Amazing Video of an extr
m some years back:
http://www.californiacoastline.org/cgi-bin/image.cgi?image=200604964&mode=big&lastmode=sequential&flags=0&year=2006
72, Jim Rodenkirch, K9JWV
> From: w0...@nc.rr.com
> To: topband@contesting.com
> Date: Fri, 10 Feb 2012 10:30:10 -0500
> CC: donov...@starpower.net
Back in the day, we (US Army) had a 1/2 mile diameter, 100 feet high
wire array located in south Florida. I routinely copied Russian
aircraft taxing on the runways in Russia using cw. This looks
somewhat familiar.
N4DU
On Feb 10, 2012, at 10:30 AM, W0UCE wrote:
Frank:
I think the ante
Frank:
I think the antenna in the video is a former Soviet Union "Cold War" version
of a German Wullenweber also known as a Circularly Disposed Antenna Array
(CDAA)
http://en.wikipedia.org/wiki/Wullenweber
73,
Jack
Anyone want to try to build one?
73
Frank
W3LPL
__
That is a Wullenwber (or Wullenwever) array. See:
http://en.wikipedia.org/wiki/Wullenweber
It would have probably made one heck of an 80/160 meter receive
antenna .
The video appears to be one of the abandoned Russian Kraug arrays -
The caption translates roughly:
> Remains of COT (trace
The video of the array begins at about half way through the video. It appears
to be hundreds of phased verticals in front of a circular reflecting screen.
Each element of the array appears to be a broadband pair of phased verticals
http://www.youtube.com/watch?v=bP6mnJGTyCQ&feature=related
An
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