http://odessaoffice.com/wireless/
Look under articles. Most of them are there. thanks, marlon ----- Original Message ----- From: "Steve Barnes" <[email protected]> To: "WISPA General List" <[email protected]> Sent: Friday, December 11, 2009 8:03 AM Subject: Re: [WISPA] Yagi vs. Grid? > Marlon do you have a list or single access to all these little articles > you have written. Or do you just hand them out when you find it helpful. > > Steve Barnes > Manager > PCS-WIN > RC-WiFi Wireless Internet Service > > Character cannot be developed in ease and quiet. Only through experience > of trial and suffering can the soul be strengthened, vision cleared, > ambition inspired, and success achieved. > - Helen Keller > > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Marlon K. Schafer > Sent: Friday, December 11, 2009 10:46 AM > To: WISPA General List > Subject: Re: [WISPA] Yagi vs. Grid? > > http://www.odessaoffice.com/wireless/antenna/how_to_pick_the_right_antenna.htm > > Take a look at the antenna patterns in there. A yagi is actually a very > nice antenna. Much better than a grid as far as MOST of the antenna > pattern > goes. > > I like panels better because they tend to be even better yet. > > You can't get too big with a yagi. For lots of gain you need a grid or > dish. > > When Mike says grids leak he's talking about the RF not water (though that > can happen too). > > laters, > marlon > > ----- Original Message ----- > From: "Mike" <[email protected]> > To: "WISPA General List" <[email protected]> > Sent: Friday, December 11, 2009 7:31 AM > Subject: Re: [WISPA] Yagi vs. Grid? > > >> It's harder to get as much gain out of a Yagi as you can out of a >> parabolic antenna. >> >> Both a grid and Yagi can suffer from ice loading. A Yagi can be >> encased in a radome to eliminate that hazard. >> >> Most grids I've seen leak horribly. That is, they tend to spew RF >> out the back because of the grid spacing. They still have the >> forward gain, but spew to the rear. >> >> When world hams were preparing for the launch of P3D, a lot of >> experiments were going on in 2.4G because one of the transponders >> used that band. The front to back ratio issues were solved by >> covering the grid with a finer mesh. >> >> A Yagi, compared to the grid has a better front to back ratio, but >> has more pronounced side lobes and other minor lobes. >> >> I know you were asking about comparisons between a Yagi and a >> Grid. 2.4G, it depends on what you are doing. 5.8G, a solid dish >> with a radome wins every time; font to back ratio, side lobes, and >> the radome seals from ice, snow, hornets and decreases the wind load >> because of the Bernoulli effect. >> >> mg >> >> >> At 09:18 AM 12/11/2009, you wrote: >>>Any benefit of generally using a yagi over a wire grid or vice versa for >>>a >>>CPE install? >>> >>> >>> >>>Robert West >>> >>>Just Micro Digital Services Inc. >>> >>>740-335-7020 >>> >>> >>> >>> >>> >>>-------------------------------------------------------------------------------- >>>WISPA Wants You! Join today! >>>http://signup.wispa.org/ >>>-------------------------------------------------------------------------------- >>> >>>WISPA Wireless List: [email protected] >>> >>>Subscribe/Unsubscribe: >>>http://lists.wispa.org/mailman/listinfo/wireless >>> >>>Archives: http://lists.wispa.org/pipermail/wireless/ >> >> >> >> >> -------------------------------------------------------------------------------- >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> -------------------------------------------------------------------------------- >> >> WISPA Wireless List: [email protected] >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ > > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: [email protected] > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: [email protected] > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
