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Making a Trap Dipole - an update(Post)
A while ago I wrote an article on making a trap dipole. Since then I have made lots more - and in doing so have gained some greater insights into how they work. The original article is here. My ...
Comparing the performance of an inverted vee dipole with a small transmitting loop on 40m(Post)IntroductionPortable operators pick which antenna to use for a wide variety of reasons. Performance is often high on the list but it's by no means the only factor. This experiment compares the transm ...
Comparing the performance of an inverted vee dipole with a small transmitting loop on 20m(Post)Introduction Portable operators pick which antenna to use for a wide variety of reasons. Performance is often high on the list but it's by no means the only factor. This experiment compares the ...
Comparing the performance of an inverted vee dipole and a quarter-wave monopole on 20 metres(Post)IntroductionThis experiment compares the performance of two popular portable antennas a quarterwave monopole "ground plane" and an inverted vee dipole on 14 MHz at a flat open test site.Met ...
A shortened antenna for 40 and 80 metres(Post)It can be tricky to set up a full-sized 80 metre dipole on a hilltop with a low mast. This design is for a shortened 80 metre antenna that adds operation on 40 metres too. It was designed with the Wo ...
Baluns: do you need one?(Post)This article was published in the first SOTABEAMS newsletter of 2016. If you find it useful, you may want to sign up to our newsletter!73 Richard G3CWI ...
5 Most Popular HF Portable Antennas(Post)I carried out a survey in early 2014 to try to discover which portable HF antenna was most popular. Just over 300 people responded. They were asked to choose their "favourite portable antenna" fro ...
Are antenna tuners always lossy?(Post)First published in the SOTABEAMS Newsletter 26 July 2016. If you like this article, why not sign up to our newsletter? It comes out about monthly.A few thoughts on Antenna TunersWhen the subject ...
How try a mag loop before you buy a mag loop...(Post)Small transmitting loop antennas "magnetic loops" have become very popular. There is no doubt that they can provide good performance for their small size. While they are easy to build if you have (or ...
Baluns Explained(Post)First published in the SOTABEAMS Newsletter 30 March 2018. If you like this article, why not sign up to our newsletter? It comes out about monthly.Baluns explainedThe word balun is shorthand for a ba ...
Portable ham radio operating at night(Post)With winter fast approaching the hours of daylight are dwindling here in northern Europe. Shorter days might mean less time for lightweight portable operating - but they don't have to. Portable opera ...
Useful links(Page)SOTABEAMS Product instructions: %%GLOBAL_ShopPathSSL%%/downloads Product videos: https://videos.sotabeams.co.uk/ Articles and advice: %%GLOBAL_ShopPathSSL%%/instructions-articles/ %%GLOBAL_ShopP ...