The SULA antenna

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JohnGreen-SWL
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Joined: Mon Sep 05, 2022 10:55 pm

Re: The SULA antenna

Post by JohnGreen-SWL »

Noted on the correct mast height specs ie 3m to bottom corner of antenna.
I will make up a mast extension and repeat the SW test . SULA vs JHG mag loop.
Busy with some work at the moment and WX raining. Thanks for your input Andrew.
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Andrew (grayhat)
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Location: JN63pn

Re: The SULA antenna

Post by Andrew (grayhat) »

JohnGreen-SWL wrote: Mon Sep 26, 2022 8:19 am Noted on the correct mast height specs ie 3m to bottom corner of antenna.
As for the SULA setup, all the data can be found here

viewtopic.php?t=55

including height
JohnGreen-SWL
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Re: The SULA antenna

Post by JohnGreen-SWL »

Yep got a copy but does not specify 3m to bottom corner of triangle for height.
;)
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Andrew (grayhat)
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Re: The SULA antenna

Post by Andrew (grayhat) »

JohnGreen-SWL wrote: Mon Sep 26, 2022 9:07 am Yep got a copy but does not specify 3m to bottom corner of triangle for height.
;)
well, it does, if you check the image you'll see that the support pole is 3m, and at the top of it there's the PVC pipes structure supporting the loop :D
JohnGreen-SWL
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Re: The SULA antenna

Post by JohnGreen-SWL »

That is the same as I made my one
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Andrew (grayhat)
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Re: The SULA antenna

Post by Andrew (grayhat) »

JohnGreen-SWL wrote: Mon Sep 26, 2022 9:57 am That is the same as I made my one
Now I'm confused, if your support pole is 3m and your cross structure is above the pole, then the height of the bottom corner of the SULA should be about 3m from ground... then ok, you tested the SULA inside so no support pole, the antenna sits near ground and suffers from reflections/coupling, plus the lobe will be quite distorted, anyhow... hope you'll be able to give it a proper test sooner or later :) !
JohnGreen-SWL
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Joined: Mon Sep 05, 2022 10:55 pm

Re: The SULA antenna

Post by JohnGreen-SWL »

Hi Andrew my mast is in two sections short bit for indoors about 1m and balance 2m extension used outdoors..
Hope that makes it clearer.
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