OK, few hours later the DIP8 versions done. The idea is to use the round shape if the PCBA is to be mounted inside a PVC ring, cut of 32mm PVC, some 8.5mm height. The outer surface of the ring can have a groove machined in, in which the windings will fit. In case a dedicated 3Dprinted housing can be made, the disc PCBA is cut into a square which remains as a 18mm x 18mm transponder PCBA. In that case the windings are in 'free-air' fixated by the 4 poles that I see others do before me.
Last edited by PA3EXV; 01-23-2022 at 03:09 AM.