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Assuming the radials radiate in a 360 degree plane like the radiator, then it stands to reason the inward radial radiation cancels the bottom 1/4 wave of the radiators radiation, and the outward radial radiation adds to the top 1/2 or 5/8 wave radiator radiation at some point in the far field,

i'm assuming this is the reason sirio have returned to the 3/4 wave radiator to keep all outward radiation in phase,as this wouldn't be the case if the top radiator portion above the basket was 5/8 wave rather than 1/2 wave.

i'm also assuming that the angle of those radials is critical for maximum gain in the far field as the outward radiation from the radials will be angled towards the earth (due to the radials being angled earthwards and EM waves generally travelling in straight lines) and be reflected by the earth and at some point in the far field both the radiator radiation and radial radiation will recombine, prefferably i imagine exactly in phase to maximise far field gain.

which if i'm not mistaken is what gives this antenna an advantage at extreme line of sight distance.

its definately a j pole,pmsl.

<blockquote data-quote="jazzsinger" data-source="post: 246258" data-attributes="member: 7426">Assuming the radials radiate in a 360 degree plane like the radiator, then it stands to reason the inward radial radiation cancels the bottom 1/4 wave of the radiators radiation, and the outward radial radiation adds to the top 1/2 or 5/8 wave radiator radiation at some point in the far field, i&#039;m assuming this is the reason sirio have returned to the 3/4 wave radiator to keep all outward radiation in phase,as this wouldn&#039;t be the case if the top radiator portion above the basket was 5/8 wave rather than 1/2 wave.i&#039;m also assuming that the angle of those radials is critical for maximum gain in the far field as the outward radiation from the radials will be angled towards the earth (due to the radials being angled earthwards and EM waves generally travelling in straight lines) and be reflected by the earth and at some point in the far field both the radiator radiation and radial radiation will recombine, prefferably i imagine exactly in phase to maximise far field gain.which if i&#039;m not mistaken is what gives this antenna an advantage at extreme line of sight distance.its definately a j pole,pmsl.<img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f617.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":whistle:" title="Whistling&nbsp; &nbsp; :whistle:"&nbsp; data-smilie="29"data-shortname=":whistle:" /><img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f617.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":whistle:" title="Whistling&nbsp; &nbsp; :whistle:"&nbsp; data-smilie="29"data-shortname=":whistle:" /> <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f609.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=";)" title="Wink&nbsp; &nbsp; ;)"&nbsp; data-smilie="2"data-shortname=";)" /></blockquote>

[QUOTE="jazzsinger, post: 246258, member: 7426"] Assuming the radials radiate in a 360 degree plane like the radiator, then it stands to reason the inward radial radiation cancels the bottom 1/4 wave of the radiators radiation, and the outward radial radiation adds to the top 1/2 or 5/8 wave radiator radiation at some point in the far field, i'm assuming this is the reason sirio have returned to the 3/4 wave radiator to keep all outward radiation in phase,as this wouldn't be the case if the top radiator portion above the basket was 5/8 wave rather than 1/2 wave. i'm also assuming that the angle of those radials is critical for maximum gain in the far field as the outward radiation from the radials will be angled towards the earth (due to the radials being angled earthwards and EM waves generally travelling in straight lines) and be reflected by the earth and at some point in the far field both the radiator radiation and radial radiation will recombine, prefferably i imagine exactly in phase to maximise far field gain. which if i'm not mistaken is what gives this antenna an advantage at extreme line of sight distance. its definately a j pole,pmsl.:whistle::whistle: ;) [/QUOTE]

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