At 08:53 AM 8/25/2007, you wrote: >Another source of spurs is the local oscillator of the SDR, if >implemented with a DDS. Only the very recent DDS like the AD9912 start >to be acceptable under this point of view. >Products like the AD9954 (much valued by some because it has I and >Q outputs) are *terrible*. They produce a forest of spurs, which can >only partially be taken care of via software tricks. > >73 Alberto I2PHD >
I tried using a AD9851 with a SoftRock and the spurs were everywhere, I don't bother with it anymore, soon I will be trying out a AD9951 to see if it's good enough to be usable. Cecil K5NWA www.softrockradio.org www.qrpradio.com "Blessed are the cracked, for they shall let in the light."
