Keep waterfall center and move current frequency marker

[DH5YM]

For some SDR it is necessary to keep the center frequency of the waterfall while moving the current frequency marker instead. If the SDR sofware that demodulates just moves its demodulator and keeps the VFO frequency fixed the spectrum is not at the correct position afterwards in the other case. For example Quisk might be used to pass 96kSpl/s baseband data to SO2SDR and moves just the demodulator in the present sample data.
See a screenshot: http://dh5ym.ath.cx/wiki/?p=822
In this picture the demodulator data is passed to SO2SDR but i hope its not too difficult to change this.

regards
Mario, DH5YM

[R. Torsten Clay]

Moving the center is not too hard. But then how does SO2SDR calculate the correct frequency? It would really need a way to pass
the center frequency of the spectrum from Quisk to SO2SDR.

Tor
N4OGW

[DH5YM]

I have to look how this can be done via Hamlib. Think currently only the demodulator frequency is transferred.
Anyway some stuff is missing in Quisk as well. SO2SDR would need the complete bandwidth of the spectrum passed from Quisk. Thats currently not possible. Could you imagine that SO2SDR can also take samples from a TCP connection instead of a soundcard ?

regards
Mario

[R. Torsten Clay]

Getting samples from TCP is possible. I would just need to know the correct format. To get it to work, I would probably need to borrow
the actual SDR hardware in question.

Tor
N4OGW