https://stream.echo6.co/videos/watch/27e446c7-abe8-4e72-814c-d8ff645e8dff How do you know if that simple QRP design is going to get you contacts or not? Have a look at its features. If it's very low power, stuck on one frequency and doesn't have efficient transmit/receive changeover it won't do much for you. In this video I explain why these features are all important and present a simple mod that will make almost any VXO rig into a more versatile split frequency transceiver. Contents: 0:00 Introduction 0:25 Frequency agile 0:53 Proper transmit/receive frequency offset 3:24 Easy and well-timed transmit/receive switching 4:03 Summary A circuit and constructional article on the 'Split 40' transceiver appeared in March 2013 Amateur Radio magazine. Note that the capacitors in the pi network are 390pF and not 220pF indicated. 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 09:23:44 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/27e446c7-abe8-4e72-814c-d8ff645e8dff 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.