Yes, I just went back a few revs and see the same thing. I'm wondering if the difference may be using a wide-band noise source vs. a CW tone (as in the case of a signal gen.)?
Kirb - VE6IV ----- Bob Tracy wrote: > Kirb, > > I've seen the same thing for the last few releases but only when the DSP > buffers are set to 4096, at lower settings the calibration is correct. I > have discussed this with Eric but he cannot duplicate it with his equipment. > > I calibrate using -73 dBm and consistently get -70 dBm on the meter. > > I don't know the answer. > > Bob K5KDN > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of root [knesbitt] > Sent: Saturday, December 23, 2006 3:59 PM > To: flexradio@flex-radio.biz > Subject: spam: [Flexradio] v1.9.0 Level Calibration > > > Is it me or is the input level calibration out by 3 dB in v1.9.0 (795)? > Dumping a -70 dBm into the front end of the SDR (HP 8648C derived) > equates to -67.0 dBm repeatedly for Pre-amp Gain settings of "low/Med/High". > Using a new .mdb for this load and have run the Cal routine after > ensuring the radio is frequency calibrated. > Thoughts? > > 73, > > Kirb - VE6IV > > -- > > _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
