[amsat-bb] Re: Decoding wideband recordings  Patrick Strasser
OE6PSE oe6pse at wirklich.priv.at Thu Aug 18 08:15:55 PDT 2011
Am 2011-08-10 00:54, schrieb Phil Karn: > It's been suggested
that I modify my ARISSat-1 BPSK-1000 telemetry >
demodulator/decoder to accept wideband quadrature (I & Q)
recordings > like those produced by most of the software defined
radios out there. > This is fundamentally not that hard, but
first I need some information. > How many people could actually
use this?  I guess all people that use SDRs in the style of FCD,
like SDR Widget, or generally all DDC receivers that work with
soundcard interfaces.  > What is the format of the > recorded
files? Is there a standard, or does each make of SDR produce >
its own?  Often the I and Q channel are recorded via Left and
Right of a sound interface, either built-in in the computer or
via USB. FCD for example is not more than a very powerful DDC
chain, an USB audio device with 96kHz bandwidth and a USB HID
interface to control all the settings