Can you tell me where I can obtain the DLL you mention for WinRad by PE1NNZ. I don't see a reference on the Winrad page and googling for it didn't produce anything. Is this DLL used to interface the Si570 via the parallel port?
Thanks, David --- In [email protected], "py2wm" <[EMAIL PROTECTED]> wrote: > > .. I have had trouble controlling the > > WB6DHW board probably because of RF feedback and bad grounding on my > > part. > > I've also had this same problem while controlling the Si570 chip from > the PC parallel port. The symptom was the chip not giving out the > correct frequency or simply not obeying to the software. The problem > went away after I added 33pF capacitors at the SCL and SDA inputs > (header H2) in WB6DHW board. The capacitors leads must be as short as > possible, SMD types are prefered. The 33pF value is good to the > intended range (10-200 MHz), a higher value may distort the shape of > the parallel signals. > > It now works smoothly, I specially enjoy SWLing using I2PHD's Winrad > which does a fine job of controlling the 570 chip with PE1NNZ's DLL. > > 73, > > JK De Marco, PY2WM >
