--- In [email protected], "Guido" <[EMAIL PROTECTED]> wrote: > > > ----- Original Message ----- > From: "Christos Nikolaou" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Friday, May 23, 2008 5:50 PM > Subject: [softrock40] Multiband SoftRock with Si570 and PowerSDR-SR40 > > > >I managed to have a modified multiband SoftRock RxTX 6.2 with the > > Si570 (LVDS) board from WB6DHW and a small addition of a FIN1002. > > I also setup the PowerSDR-SR40 thats got Si570 control over the LPT > > interface. > > So far so good, Si570 responds to PowerSDR and I have Rx and Tx (no > > transmit images since it works like a SDR-1000) from 160 up to 10m (no > > change whatsoever to 6m). > > Well, that happens though with an erratic behaviour, sometimes it does > > change band, sometimes it does not change, instead it goes to its > > default startup frequency. After a few tries, it manages to change > > band. Not sure but it seems that either PowerSDR-SR40 has a weird bug > > on Si570 programing or I'm not doing something right. > > > > Has anyone else notified this? > > > > 73 > > Christos SV1EIA > > > > > > P.S. > > I setup the Si570 Xtal to be 114285000Hz. > > Christos, > Some have reported the same behaviour. It seems there is a timeing issue in > I2C routine on fast computers. As temporary workaround it seems that it can > be resolved by addings some Cs over the SDA and SCL lines to artifically > slow down the timing. > I am planning to do this weekend a test with Jan G0BBL to resolve this issue > in the software, after which I will release a new PowerSDR-sr40 and > si570.exe (standalone control prog.) and si570.dll (Winrad driver). > > Thanks for your interest. > > 73, Guido > PE1NNZ >
Ok Guido, I just saw your reply. So, its a fast pc problem! Bear in mind that when I test it with your 'direct' program, its ok. I anticipate your new version :-) Thank you so much for your effort. 73 Christos SV1EIA
