I buy PCB on 20*30 (cm) chunks so after some complex math....(rest should give 0) I set on 10*6 (cm) which give's me 10 smaller PCB's, enough for a 5 conversion super duper heterodyne transceiver :)
From left to right some of the boards in fabrication process: RF pre-amp (to be brewed), First mixer, attenuator, audio amp.
I placed in each board 2 holes for fixing inside their box.
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