Hi,


I have a receiver I am considering modifying for other bands outside of what
it covers. It is a dual conversion superhet design. Before I modify it,
I'd like to see how the new frequencies would affect the mixer output. Is
there any decent freeware available that would allow me to see all mixer
outputs and to determine if any outputs might be a problem?

Thanks,
Mike

'Electronics' for September 2nd, 1976 had a simple 49-step spur
analysis program for the HP-25 by John R. Coleman of Harris
Electronic Systems which I assume will port to most other HP
calculators using RPN. I haven't tried it myself of late but it
worked fine some years ago. I can email a copy to anyone who wants
it.


Cheers - Joe