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GSM/GPRS module, 17.6x15.7x2.3mm, http://simcom.ee/documents/SIM800C/SIM800C_Hardware_Design_V1.05.pdf Quad-Band GSM/GPRS module, 24x24x3mm, http://simcom.ee/documents/SIM900/SIM900_Hardware%20Design_V2.05.pdf Telit xL865 familly footprint, http://www.telit.com/fileadmin/user_upload/products/Downloads/3G/Telit_UL865_Hardware_User_Guide_r8.pdf ublox Sara GSM/HSPA modem, https://www.u-blox.com/sites/default/files/SARA-G3-U2_SysIntegrManual_%28UBX-13000995%29.pdf, pag.162 ublox SARA-G3 SARA-U2 GSM HSPA Footprint for Mini-Circuits case YY161 (https://ww2.minicircuits.com/case_style/YY161.pdf Footprint for Mini-Circuits case GP1212 (https://ww2.minicircuits.com/case_style/GP731.pdf) following land pattern PL-230, including GND vias (https://www.minicircuits.com/pcb/98-pl176.pdf Footprint for Mini-Circuits case MMM168, Land pattern PL-094, pads 5 and 6 // manual step button in Unseen Servant functions fd8b2dd8a7c07368476bde4f42aea6df4bff239b tracks the ratsnest and compactifies the power safety block and into any non-high-impedence connections; that is, fat traces to chip power, but not also under the MIT License.

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