https://stream.echo6.co/videos/watch/1812bd00-c6ec-4278-9602-ee6e5a412fb5 While thought difficult to align and set up, this video shows how a 3.5 MHz direct conversion SSB phasing receiver can be aligned with the help of a RF signal generator (N3ZI DDS VFO kit) and the free FrequenSee Android mobile phone app. The receiver is incredibly simple - 3 transistors + 1 IC. It is based on a SSB phasing transceiver developed by SP5AHT. You can find SP5AHT's circuit at http://sklep.avt.pl/photo/_pdf/avt2906.pdf My modifications, which are pending publication in the G-QRP's Sprat, include substituting an LM386 for the audio amplifier, using a 3k - 3k audio tranformer for L6, changes around L2/L3 and leaving out parts used for the transmitter only. I run the receiver through a number of tests. It performs surprisingly well for the few parts it uses. Also the 20 - 30 dB opposite sideband rejection is a particular bonus compared to the usual type of direct conversion receiver which doesn't have any. 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 09:26:30 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/1812bd00-c6ec-4278-9602-ee6e5a412fb5 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.