Thursday, July 23, 2026

A Homebrew Receiver from Hidehiko JA9MAT


We recently complained that no SolderSmoke Direct Conversion receivers have been built in Japan.  So far, no Japanese SS DC Receivers have been built,  but Hidehiko JA9MAT has gone a long way in addressing this complaint.   In the video above you will see a 40 meter receiver using a PTO and a LONG tuning shaft.  There is a wooden base.  I see at least three 3D printed coil forms. Hidehiko explains that this receiver has "SA612(DET) + 2N3904 x 2 (Franklin VFO) based with Long Shaft PTO."  FB Hidehiko!  More from him in the days ahead.  

1 comment:

  1. Perhaps the very long PTO shaft keeps hand capacitance away from the VFO. Neat! Paul VK3HN.

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