Replaced subsonic filter with a quieter one, for a slight improvement in noise performance. For late model UH400A or UH400TM (late 2005 and newer) using National PLL and 11.2896 MHz crystal.
Replaced subsonic filter with a quieter one, for a slight improvement in noise performance. For late model UH400A or UH400TM (late 2005 and newer) using National PLL and 11.2896 MHz crystal.