What the thread found

• The center pin of an SMA RF connector should be soldered to the center PCB land of the RF filter labeled FLT1, not to nearby adjacent lands.
• When soldering at 2.4 GHz frequencies, avoid overheating the trace and keep the solder joint small to prevent RF impedance mismatch that could reduce transmission range.
• FR4 fiberglass PCB material at 0.062 inches thickness performs adequately at 2.4 GHz frequencies for this application.

Depends on

• This procedure is specific to Preston MDR 3 boards being adapted for MDR 2 units.
• The guidance assumes standard SMA connector types and FR4 PCB construction.
• The original antenna mounting reference was lost, so the reconnection required visual inspection of a reference board.

Gear in this thread

MDR

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