https://stream.echo6.co/videos/watch/fff9a935-24cc-45cd-9c7b-53809a25e707 Part 2 describes modifications made to make the transceiver even simpler. The 2 transistor receive audio amp has been ripped out and replaced with an LM386. Even though it's the only gain stage in the receiver, amplification is (just) sufficient to provide good headphone reception of most signals. The whole transceiver is now down to 6 transistors and 1 IC. As with all simple rigs there's a downside. Eg the receiver front end has no narrow filtering. Unwanted broadcast signals are sometimes audible, especially at night. In fact if you listen carefully you'll here some in the video. Gain could be slightly higher for low noise receive locations. Also there's an annoying clunk when switching from transmit to receive; an audio muting circuit would likely fix that. Notwithstanding these failings, it's still a practical transceiver capable of many excellent contacts up to about 1000km and occasionally up to 3000km. Watch Part 1 for further information, including a circuit that you draw yourself. 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 05:58:49 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/fff9a935-24cc-45cd-9c7b-53809a25e707 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.