What can you do with 15 metres of wire as an HF antenna

How useful is a single 15 metre piece of wire as an antenna? I run through bands from 80m to 10m, explaining how it can be configured for the best results. 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)