[Yaesu] Intermittent DSP

jcowens1 at comcast.net jcowens1 at comcast.net
Fri Jun 4 12:36:58 PDT 2010

I have been experiencing intermittent DSP circuit function in my FT-1000MP. The receiver appears to be working properly with the DSP curcuits not activated (DSP switch off and not lit), but no audio is coming through if the DSP switch is on and lit if there are are any settings for CONTOUR or NR.  If both of those controls are set to OFF, but the DSP switch is pressed and lit, the audio comes through unfiltered. This occurs for either SSB mode settings (LSB or USB) or CW. Audio seems normal for AM, FM or other mode settings. 

When I say intermittent, I mean that with the DSP circuits activated with some DSP CONTOUR or NR settings, there is no audio coming through at all, and then it will randomly start coming through with DSP circuits working properly, and then may disappear completely again. It sort of toggles off and on randomly. 

Has anyone experienced this kind of problem before?? If so, how did you deal with it. 

John Owens -  N7TK 

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