Quisk saga continues
tfox at knology.net
Sat Jul 3 00:29:34 CDT 2010
I've been conversing with James Ahlstrom about how best to add the
Charleston Receiver to Quisk. Rather than kludge Quisk up, Jim
preferred to move existing SDR-IQ support to separate files, which he
finished yesterday. Today, I looked at those files, and after four
hours, was able to get the Charleston Receiver working within his new
design. I plan to clean it up tomorrow, and add some things. Then I
will put it up on the AMRAD web site for others to download.
As a reminder, Quisk runs under Linux (I use Ubuntu 10.04LTS now), and
is written in Python and C. It also needs access to the standard USB
library, for interfacing to the Digilent Nexys2 board. It does NOT need
any special Digilent USB drivers under Linux. Quisk is easier to
compile and use than GNU Radio, and results in a much nicer and easier
GUI than GNU Radio.
There are still some outstanding issues to resolve. I typically run at
only 192k samples right now, due to some underrun and FFT errors. Also,
the FIR filters for the 8201 DDC chip are set much higher right now
(480k?), we need someone to calculate new FIR filter tables. But, this
version should be very useful anyway.
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