British Cave Research Association

Does anybody have a datasheet of this TOKO inductor? I tried to ask somebody at TOKO for replacement types or at least data, but with the number RWO6A6408 he could not say anything else than this might be not a TOKO number at all.

Thanks, regards
Matthias

Hello, the last attempt to build heyphones I found here was 2007 (by iw3igc). I would like to know whether anybody else has built successfully any heyphones in the last few years. If yes, could he work with the scanned TIFF files or were the layouts recreated with good gerber data? Are the component...