AADE Step 7 Picture



In the kit I received, the four pin header was just two - two pin headers. Place them as shown so that the jumpers will fit and work properly. Also, place the capacitor as shown so that the adjustment screw is grounded. This way hand capacitance effects will not throw you when trying to set the oscillator frequency perfectly.

That is a piece of paper underneath the crystal so that I wouldn't accidently pull the crystal to the PCB board and ground the trace underneath it, as noted in the instructions. Pull the paper out after you solder the crystal pins.

Notice the different type trimmer used on this board. Install the flat side as shown so the adjustment screw is grounded. Only one two-pin header is shown installed to show the orientation in which they are mounted - horizontally.

Again, note the paper underneath the crystal to prevent pulling the crystal against the board and causing a short against the trace underneath.

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Last Update: 7/14/08
Web Author: David White, WN5Y