Torsten Strelow wrote am 2008-03-28 06:40:
do you think it is possible to use a CX2388x based TV card ( see
http://www.geocities.com/how_chee/cx23881fc6.htm ) to capture the
signal of an ADSL2+ Annex B line? Annex B uses the frequency range
from 138kHz to 2,2 MHz.
Your referenced page tells us that your tuner has a bandwidth of 30MHz,
which is fine, and can be tuned from 50-850MHz. You want to capture from
about 0 to 2.5 MHz. This is clearly out of the tuning range.
It says something about a 10.7MHz intermediate frequency.
You need some device to get your ADSL-signal in the tuning range, or to
the IF of 10.7 MHz, but this is probably more difficult, as you need to
connect to some internal line and not the default input (antenna in).
Engineers motto: cheap, good, fast: choose any two
Student of Telematik, Techn. University Graz, Austria