Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: PT0S antenna  (Read 1724 times)
K6UJ
Member

Posts: 309




Ignore
« on: November 09, 2012, 12:14:50 PM »

The PT0S DXpedition will be using a yagi variation that I haven't seen before.   It is for 20/15/10 and
looks like vertical elements with radials.  The beauty of it is that it can be used at a low height. 
It will be interesting to see how it works for them.  AE5X has a write up on it in his blog:

http://www.ae5x.com/blog/2012/08/02/a-unique-yagi-for-pt0s-dxpedition/#more-9815

Bob
K6UJ
Logged
KY6R
Member

Posts: 3157


WWW

Ignore
« Reply #1 on: November 09, 2012, 01:14:48 PM »

Over salt water it should be excellent. Over regular dirt - not so much.
Logged
K6UJ
Member

Posts: 309




Ignore
« Reply #2 on: November 09, 2012, 04:54:51 PM »

Yeah,  after reading Tom Schillers book I see that the verticals by the sea rule !
For the PT0S location it may be just what the doctor ordered, I hope so, I need this for ATNO  Tongue

Bob
K6Uj
Logged
KY6R
Member

Posts: 3157


WWW

Ignore
« Reply #3 on: November 09, 2012, 05:11:20 PM »

These guys know their antennas and propagation, thats for sure!
Logged
K3VAT
Member

Posts: 705




Ignore
« Reply #4 on: November 09, 2012, 05:34:12 PM »

The PT0S DXpedition will be using a yagi variation that I haven't seen before.   It is for 20/15/10 and
looks like vertical elements with radials.  ... Bob K6UJ

It's really a yagi-vertical array hybrid.  It's called a GardenBeam: a tri-band vertically polarized parasitic array.  It looks like a cross between a vertical array and a traditional Yagi beam, but is definitely vertically polarized.  Vertically oriented Yagis do perform well from low heights (<5m), but at only higher freq (6M and greater).  This antenna uses a set of vertical elements and a set of horizontal dipole elements, which are sized similarly to the elements of a Yagi. They say that near-optimum mounting occurs only 9 to 10 feet above ground!!  Operation from an ocean side environment is the ideal setting for this antenna, not here in Winchester, VA.

The GardenBeam website says, "This results in a vertically polarized beam antenna that is well balanced and can be mounted at the center of its boom."

Could be something very interesting - even a break through in the use of rotatable vertical polarized antenna systems.

73, Rich, K3VAT


« Last Edit: November 09, 2012, 05:38:12 PM by K3VAT » Logged
NU1O
Member

Posts: 2643




Ignore
« Reply #5 on: November 10, 2012, 05:05:42 AM »

Has anybody heard them yet? They had hoped to have the 160 meter antenna up and transmitting on the night of the 9th.

It's a very innovative antenna, indeed.

73,

Chris/NU1O


Logged
AF3Y
Member

Posts: 3723




Ignore
« Reply #6 on: November 10, 2012, 10:41:34 AM »

Has anybody heard them yet? They had hoped to have the 160 meter antenna up and transmitting on the night of the 9th.

It's a very innovative antenna, indeed.

73,

Chris/NU1O




They were late departing, so starting on the 10th, I believe.  (Maybe tonite....!)

73, Gene AF3Y
Logged
K3VAT
Member

Posts: 705




Ignore
« Reply #7 on: November 10, 2012, 05:36:56 PM »


They were late departing, so starting on the 10th, I believe.  (Maybe tonite....!)

73, Gene AF3Y

They've been on for a number of hours on 160M (their priority [along with 80M]) and racked up hundreds of top band QSOs.  A bit weak here in VA and noise is up too.

There is another thread on PY0S operations.

GL, 73, Rich, K3VAT
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!