On Sun, Jul 14, 2024 at 08:44 AM, Smeden wrote:
Btw. Do you know of anyone that have succeed in using a faster ADC + modified LP to create a "wider" bandscope?
No-one has made it work with a different codec to my knowledge. The Pi Hat is not available commercially. Farhan made them as a one off run to hand-out after his talk at Hamventrion. My original build with the separate codec board worked but it is a cleaner build with the Hat.
Another member here posted gerbers for a different version of the hat - I haven't looked at it.
/g/BITX20/message/112593I agree with the modular approach - my analog circuit is very different from the Farhan's version. I lifted bits and pieces of his circuit - the SI5351 buffer amps and the audio amp in particular. I used his LPF values but I made the LPF relay switched rather than diode switched. When I get around to it I would like to post a module by module discussion on my blog. I don't have the desire to do a full end-to-end schematic as others have asked for, but I don't mind taking it a board at a time. The plus side is its is good documentation for me!
73,
Dean
KK4DAS
