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Tuesday, April 21, 2026

Nader M9KCA-ST2NH's Beautiful Build of the SolderSmoke Direct Conversion Receiver: NO SMOKE!

 Nader wrote: 

Hello everyone! After more than 30 years, I've rebuilt the DCR again. I wanted to share the fun of the 40m SolderSmoke DCR Challenge with all of you. It was a fantastic project — fully documented, with many people sharing their experiences online. I'm truly delighted to show you my prototype. The best part? It ran from the very first power-up — no smoke, no tuning needed! Yes, all on one board. The audio amp isn't quite ready to challenge the role yet, but it's still a lot of fun.

Nader's Sudanese callsign rang a bell with me.  I had talked about him in SolderSmoke podcast #58 on May 13, 2007.  Here it is:  https://www.soldersmoke.com/soldersmoke58.mp3    And I included a long quote from him in the SolderSmoke -- Global Adventures book.  So Nader is an old friend indeed.  

He clearly built the receiver, with excellent results.  He used the innards of a glue stick to build the support for the PTO inductor.  But he has not yet built the three-transistor AF amplifier.  So, in the interim, I am placing him in the "Honorable Mention" category.  When he completes the AF amplifier, he will be promoted to full membership in the Hall of Fame. 

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