https://stream.echo6.co/videos/watch/4ee97a60-ecf7-4ff1-a6bd-674dfd130a79 Variable inductors are rarely available new. Here's how you can make one with just three items: 1. A pill gun from a pet shop. 2. A ferrite rod from an old radio and 3. Some wire. Inductor featured has a 2.2 to 14 uH range, suitable for an HF antenna coupler. A suitable coupler design is at https://www.youtube.com/watch?v=NyKu0qKVA1I PS: If you liked this video please consider supporting Amateur Radio VK3YE by: Subscribing on YouTube,, Checking my books page at https://books.vk3ye.com, Shopping on Amazon via: https://amzn.to/3iiDQXv, or, Shopping on eBay via: https://ebay.us/i9DuWP (then if you buy something I'll get a small commission at no cost to you) Sat, 13 Jun 2026 18:02:52 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/4ee97a60-ecf7-4ff1-a6bd-674dfd130a79 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.