TC-L-07 — RF output matching network — component population and solder quality

Using the schematic, check every component in the RF output matching network (π-network: C1=10 pF, L1=15 nH, C2=10 pF from RFO or PA_BOOST pin toward the antenna connector).

Inspect the PCB for:

• Missing 0402/0201 passives in the RF path
• Tombstoned or rotated components
• Cold or bridged solder joints on any RF passives
• Any copper fill, via, or trace encroaching on the SX1276 antenna keepout zone or crystal keepout zone

Pass: all components populated with correct values and orientation, no cold joints, no keepout violations.