Ordering the flat connectors (Faston) is not the problem (Buerklin), and the relays are for sale at the FunkAmateur shop (box73.de), and also at TME (cheaper,...). But I had some problems in getting the connectors. I hope SOSelectronics can deliver the connectors, 4-5 weeks. I still don't have the connectors,......yes,... I got the connectors February 15.

Feb 8 2021: I got a mail from SOSelectronics that they sent the parts to me !! But in the meantime, I had got some parts from other sources as proto's, so I am not delayed in my project.

The inductors are made of 2mm copper wire. I bought it at the AmateurRadioshop.nl for two euro per meter. Also not easy to find.

Making all the inductors is quite a job. First read the documentation in the 'Baumappe' before even thinking of starting to do something ! It has to be done very precisely and it has to look of course super!