On 9/29/05, Frank Brickle <ab2kt@...> wrote:
The SoftRock itself does no demodulation. All it does is sample the
incoming signal in such a way as to mix down to 11250Hz. The
downconverted signal is then dumped to the computer's soundcard.
Frank,
Looking at the picture:
I couldn't understand how the mixing down to the magic number 11250 is
obtained.. Would you mind explaining it a bit more?
What I thought was that the signal at 7.056 gets downconverted to zero
IF and because of the soundcard sampling rate of 48 khz, we are able
to tune +-24khz.. I guess there is some issue in my understanding.
WIll be great if you explain it to me and others.
TIA
--
73 - Ramakrishnan, VU3RDD
Ramakrishnan Muthukrishnan