É verdade que as antenas PCB podem ser sintonizadas apenas alterando seu comprimento?

I want to implement a control system I designed for a light electric motorbike. I would like to mount it as professionally as possible on the chassis. It consists of a power system pcb and a SAMC21 development board which I’ll merge later once this all works properly. I have tried screwing it directly on the aluminium chassis but have found that shocks and vibrations from the horn disturbed the system or even destroyed it upon large shocks. Is there a specific way car and motorcycle manufacturers mount their electronics to make their system as robust as possible?

We would like to do wave soldering for the through hole components. All through hole components are top side of PCB. Only test points, which require mask during process, are on the bottom side. So there is a extra labour cost at adding and removing the mask. Can we do wave solder the through hole parts without masking it?

Para meu entendimento, cada processo no sistema operacional contém seu próprio bloco de controle de processo separado. Alguém pode me explicar isso. Cada processo possui seu próprio PCB ou existe apenas um PCB que contém todas as informações de todos os processos??