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 Online Antenna Designer

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Victor
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Victor


Call Sign : 26-CT-3228 / M7VIC
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PostSubject: Online Antenna Designer   Online Antenna Designer Icon_minitimeSat Oct 12, 2024 7:26 am

Hi All,

Just a short posting from me today. (Thank God eh? Wink )


If you like to play with antennas, constructing them or understanding them (don't we all?) then the following site might come in handy even if just for the intrigue :-

https://portable-antennas.com/index.php

I stumbled across this site quite by accident but it's proved useful to me so posted the link for those that haven't come across it.


Enjoy your radio interests and have a great weekend. Online Antenna Designer 1f44d 

All the best,
Victor

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https://www.qrz.com/db/M7VIC
Victor
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Victor


Call Sign : 26-CT-3228 / M7VIC
Posts : 6260
Times Thanked : 389
Join date : 2019-11-10
QTH or Location : Bedford
Equipment Used : Various

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PostSubject: Re: Online Antenna Designer   Online Antenna Designer Icon_minitimeTue Oct 15, 2024 5:56 am

Anyone else had a chance to play around on this antenna site yet?

After a bit of digging (on the SOTA site) it looks like this was developed by DM1CM - Rob Banfield but strangely he doesn't have a credits mention on the site. Otherwise the site is extremely useful, full of plenty of information and a much less steep learning curve associated with it than other antenna modelling sites/software out there.

I've used it to model my 9:1 EFRW and finding exciting possibilities by playing around with antennas height, lengths and counterpoise 'virtually' before deciding on any modifications I may physically make. All of which certainly saves some time as well as a better understanding. Online Antenna Designer 1f44d 

A preliminary example is shown below with the data culminated into one image for a better view on my part. (Although my original is much higher resolution but kept low here to post on the forum.)

Online Antenna Designer 3d_plo10


Interesting stuff. (Well, for some of us I suppose. Wink )


All the best,
Victor

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SangueG
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PostSubject: Re: Online Antenna Designer   Online Antenna Designer Icon_minitimeSat Oct 19, 2024 8:00 am

I have had a little play. It looks fairly easy to use and understand for those who want to do some modelling of a few fairly common types of antennas and who haven't used modelling software previously, or do not want to download software to do so.

Thanks for sharing.

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Victor
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Victor


Call Sign : 26-CT-3228 / M7VIC
Posts : 6260
Times Thanked : 389
Join date : 2019-11-10
QTH or Location : Bedford
Equipment Used : Various

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PostSubject: Re: Online Antenna Designer   Online Antenna Designer Icon_minitimeSat Oct 19, 2024 9:43 am

Hi Neal,

Despite the basic antenna models available I was able to successfully plot my bit of clothes line by modeling it as an end-fed in an inverted V arrangement utilising a 9:1 Un-Un. The final view of the antenna looked pretty spot on to what I have.

The results surprised me (pleasantly) and I was able to play around with numbers until I started seeing results I was after. It turns out my antenna is none too bad and playing around with counterpoise lengths greatly effects the upper ranges (10m/6m) swinging around the field pattern. Due to that little bit of playing my next antenna experiment will be a relay operable switching of counterpoise wires and see how it fares.

I did write to Rob via the sites contact page extolling the virtues of his site and software receiving a very nice mailing back. (He mentioned my use of limited space antennas and how nice my home built ATU was. Smile )

In his mailing he was pleased that his software was performing the job typical operators were after and especially that I'd found it so useful.

What a star. Online Antenna Designer 1f44d 


I shared the link just in case anyone else found it as useful as I have even if only for playing around with and understanding basic antenna systems.


All the best,
Victor

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PostSubject: Re: Online Antenna Designer   Online Antenna Designer Icon_minitime

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