https://stream.echo6.co/videos/watch/9477f958-1a0a-4152-886c-170d4dd4fe10 Testing a simple USB-powered WSPR beacon transmitter from a local beach. As with my previous homebrew WSPR equipment, this one is double sideband. The transmitter (no receiver) has 3 transistors and puts out about 100 milliwatts. The USB power makes it much more compact as no external battery is required. Stations hearing this so far have been VK4ZE and VK2DDI. Check W3PM's website for the inspiration behind this and some circuits to start off with. UPDATE 22/3/2011: Testing from home resulted in greater success - spots from ZL2FT, VK4ZBV and VK5ZAG. 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, 09 May 2026 05:10:11 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/9477f958-1a0a-4152-886c-170d4dd4fe10 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.