# HackRF External TCXO ### Gerber Files | File | Layer | |:-----------|:------------------------| | extclk.GTL | Top layer | | extclk.GBL | Bottom layer | | extclk.GTS | Top solder stop mask | | extclk.GBS | Bottom solder stop mask | | extclk.GTO | Top silk mask | | extclk.TXT | NC Drill | | extclk.GML | Mechanical layer | ### BOM (bill of material) | Part | Value | |:-----|:------| |X1 |[FOX924B-10.000](http://www.digikey.com/product-detail/en/FOX924B-10.000/631-1067-1-ND/1024772), TCXO 10MHz HCMOS 2.5ppm| |C1 |CAP 1uF 0805| |C2 |OPEN|