Do you recall what the hardware mods were? I'm wondering if I can
clean up card with caps here and there. I looked at your sine wave
data. I low pass filtered it and got rid of most of that garbage. The
tone is at 1890 Hz as far as I can tell. How did you generate that
tone and what was the center frequency? Where did you inject the tone?
Hew How Chee wrote:
The card I use last time is PV-TV304P+ (REV .2B) with FMRC (FM and
Remote Control) . The chipset used is CX23881. The card from newegg.com
is using CX23883. Can't tell it is compatible or not. The data I got is
8 bit unsigned. Didn't try out 10 bit since I was quite dissapointed by
the noise in the 8 bit digitized signal. Nevertheless, it is still
possbile to digitize the 10.7 MHz FM IF with hardware mods.
Note that the source code at
http://www.geocities.com/how_chee/cx23881.htm can't compile and run in
Linux kernel 2.6 and is not hooked up to GNURadio. It was developed
using Knoppix Live CD 3.4 running kernel 2.4.x.
Jim Perkins <address@hidden> wrote:
Aren't you the guy how figured out how to get the ADC data from the
CX23881 card into the PC? I found your website http://www.geocities.com/how_chee/cx23881.htm
and looked at the data. I think I'm going to get one of these cards to
play with. What model number do you have? I can find PROLINK
PV-TV304P+FMRC for $30 at newegg.com. The Prolink website says it's 8
or 10 bits so I'm wondering if that is the right card.
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