Audio input to transmitter - level? #ubitx

Rob French (KC4UPR)
 

Hello,

So I'm driving digital audio into the uBITX, and I'm wondering how, in the absence of any real test equipment, to properly set the audio input to avoid transmit distortion.  Now, I do have the ability to set the peak-to-peak voltage of the DAC I'm using.  So, if the DAC is hooked up to the mic input, what would be the proper audio peak voltage level to be (typically) setting? 

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