Tasty » Adam Sampson's isotron bookmarks

THE EH ANALYZED edit / delete

Modelling EH antennas using SPICE. This produces some interesting results.

to aerial amateur eh electronics hf isotron modelling radio small-aerial spice ... on 09 January 2010

Site of Lloyd Butler VK5BR edit / delete

And this is someone who has some serious clue about antenna design playing with the EH/Isotron approach -- on the X2/X3 pages, he's doing experiments to figure out how it actually works, and what you need to do to make it work well. The results are nonobvious.

to aerial amateur eh hf isotron radio small-aerial ... on 09 January 2010

L'ANTENNE ISOTRON edit / delete

Right, this is more interesting: this guy twigged that the Isotron and EH antennas look like they're operating on similar principles, and came up with a simpler design drawing on both, which can be homebrewed with some plastic pipe and old hard disk platters (!). Looks like it works well. There's a PDF here giving simple instructions for building the CB version.

to aerial amateur cb eh hf isotron radio small-aerial ... on 09 January 2010

Isotron edit / delete

DIY clone of the commercial Isotron antennas. They are unimpressed with the performance.

to aerial amateur cb hf isotron radio small-aerial ... on 09 January 2010

Isotron Antennas - Low Profile Limited and Restricted Space Antennas for HF edit / delete

Commercial HF antennas of unusual design. They get good reviews, although people can't agree on how they work. Pretty, but expensive and not very weatherproof.

to aerial amateur hf isotron radio small-aerial ... on 09 January 2010