3.30 Break apart inner PCBs of display board
Now that the main PCB assembly is complete, the display board and controls board are
assembled next.
The display board panel contains several smaller PCBs which are joined to the display
board via thin PCB bridges which have a line of holes, designed to be easily snapped out.
• Controls PCB: this will hold the gain control, rotary encoder (tuning) control and the
two buttons.
• Controls board spacers: two tiny PCBs which are fit on the mounting points of the
control PCB to increase its height above the main QCX-mini PCB by 1.6mm
• uSDX daughtercard: the PCB for the SSB modification supported by the uSDX group
https://groups.io/g/ucx
The small PCBs can be snapped out of the panel using needle-nosed pliers or wire cutters
or some such similar tool. Breaking out the controls board is easiest, just a twisting action
while gripping the thin PCB bridge is enough to break it out. The uSDX daughtercard and
control board spacers require a bit more care; particularly the uSDX daughtercard, be
careful not to break the main center spar of the display board while snapping it off.
Once removed, it is essential to file the rough edges of all the PCBs (except the uSDX
daughtercard – it is only necessary to file this one if you are intending to use it).
The Controls board has to fit through the hole in the lower part of the display board
and will not do so unless the rough edges have been smoothed off!
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