Re: Tracing receive signal for low signal

Dave Space
 

I'm wondering about the crystal filter.  I input a signal at tp17 11.996 or around there to get a tone at 290mv it only comes out at <10mv peak-peak that's like -29db does that sound right? I'm measuring with the oscilloscope at tp20.  Seems like an awful lot of loss or I'm detuning the filter or something with the test. 

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