You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
The Feb 2025 Radioddity Giveaway Results are In! Click Here to see who won!

Reply to thread

Message

Cecil address's what you saw locally from the Half square here.

Half Square antenna

--------------------------------------------------------------------------------
> W8JI wrote: It is true that if a dipole is low enough a half-square can beat it at very low angles, but the dipole would have to be pretty low or the earth very good conductivity. <

True, low to the earth is the main feature of the 40m half-square. Its vertical elements are ~33 feet long and the lower ends (current nodes) need to be only a few feet off the ground. Using 40 foot high supports on 40m, the half-square has 1.61 dBi of gain at an elevation angle of 10 degrees (better for DX). At 10 degrees, the dipole's gain is 4+ dB down at -2.65 dBi. But of course, the dipole beats the socks off the half-square at an elevation angle of 50 degrees, much superior for closer contacts. (40 feet is probably close to the mean height of 40m dipoles.)
--
73, Cecil, w5dxp.com

<blockquote data-quote="MrSuburban" data-source="post: 285621" data-attributes="member: 13462">Cecil address&#039;s what you saw locally from the Half square here. &nbsp; Half Square antenna --------------------------------------------------------------------------------&gt; W8JI wrote: It is true that if a dipole is low enough a half-square can beat it at very low angles, but the dipole would have to be pretty low or the earth very good conductivity. &lt;True, low to the earth is the main feature of the 40m half-square. Its vertical elements are ~33 feet long and the lower ends (current nodes) need to be only a few feet off the ground. Using 40 foot high supports on 40m, the half-square has 1.61 dBi of gain at an elevation angle of 10 degrees (better for DX). At 10 degrees, the dipole&#039;s gain is 4+ dB down at -2.65 dBi. But of course, the dipole beats the socks off the half-square at an elevation angle of 50 degrees, much superior for closer contacts. (40 feet is probably close to the mean height of 40m dipoles.)--73, Cecil, w5dxp.com</blockquote>

[QUOTE="MrSuburban, post: 285621, member: 13462"] Cecil address's what you saw locally from the Half square here. Half Square antenna -------------------------------------------------------------------------------- > W8JI wrote: It is true that if a dipole is low enough a half-square can beat it at very low angles, but the dipole would have to be pretty low or the earth very good conductivity. < True, low to the earth is the main feature of the 40m half-square. Its vertical elements are ~33 feet long and the lower ends (current nodes) need to be only a few feet off the ground. [COLOR="Red"]Using 40 foot high supports on 40m, the half-square has 1.61 dBi of gain at an elevation angle of 10 degrees (better for DX). At 10 degrees, the dipole's gain is 4+ dB down at -2.65 dBi. But of course, the dipole beats the socks off the half-square at an elevation angle of 50 degrees, much superior for closer contacts.[/COLOR] (40 feet is probably close to the mean height of 40m dipoles.) -- 73, Cecil, w5dxp.com [/QUOTE]

Top Bottom