pico-tracker/Notes.md

PCB Weight

The density of FR4 is 1,850 kg/m^3. If we assume a PCB area of 12*50 = 600 mm^2...

For a 1.0mm PCB: 600 * 1.0 * 1.85 = 1.110g For a 1.6mm PCB: 600 * 1.6 * 1.85 = 1.728g

Contestia

There doesn't appear to be much documentation for contestia...

Oh here's some

Really we're looking at Olivia MFSK - contestia is just a variant.

Wikipedia ARRL

It's already implemented in dl-fldigi here

(Inverse) Fast Hadamard Transform needed

APRS

some description..