Wouldn't it be far easier to change the crystal, and a couple of the caps so it's at 4X the center frequency of the window he wants. Of course you also need to change the band-pass components and make it a low-pass filter. A low-pass at those frequencies would be easier than a band-pass filter
Make the changes as you build it. >--- In [email protected], KY1K <[EMAIL PROTECTED]> wrote: >> Does anyone have any idea how to put the softrock-40 on vlf? >> > >Just put a simple mixer in front of your PC sound card. Something as >simple as a 612 mixer and a 120 khz osc (divide down a HF osc) and run >I2PHD SDR program. I expect you could also run the FLEX SDR program. > >Also look at running Spectrum Lab as the pgm with a simple mixer. > >Stan AK0B > > > > > > > >Yahoo! Groups Links > > > > -- Cecil KD5NWA <www.qrpradio.com> I fail to see why doing the same thing over and over and getting the same results every time is insanity: I've almost proved it isn't; only a few more tests now and I'm sure results will differ this time ... ------------------------ Yahoo! Groups Sponsor --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/ELTolB/TM --------------------------------------------------------------------~-> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/soft_radio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
