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Following land-pattern PL-258, including GND-vias (https://ww2.minicircuits.com/pcb/98-pl052.pdf Footprint for Mini-Circuits case CD542 (https://ww2.minicircuits.com/case_style/CD542.pdf) using land-pattern PL-049, including GND-connections and vias (https://ww2.minicircuits.com/pcb/98-pl049.pdf Ai Thinker Ra-01 LoRa module wireless zigbee 802.15.4 flash crypto ATSAMR21G18 AT45DB041E TECC508A U.Fi Class 4 Bluetooth Module with on-board components Added hard sync input. But could also be done with a diameter between 16-19 mm: https://www.keyelco.com/product.cfm/product_id/826 Keystone #500, 12mm CR1220 battery holder, Keystone P/N 2462, https://www.keyelco.com/product-pdf.cfm?p=1027 1xAAA Battery Holder, Keystone, Plastic Case, http://www.keyelco.com/product-pdf.cfm?p=1031 AAA battery cell holder Keystone type 3034 coin cell vertical Panasonic CR-1632-V1AN battery, https://industrial.panasonic.com/cdbs/www-data/pdf2/AAA4000/AAA4000D464.PDF battery CR-1632 coin cell retainer SMT battery holder Keystone type 2998 battery holder Keystone Battery Holder, 2479, Battery Type 3xAA battery CR1225 coin cell cr1216 cr1220 cr1225 1xPP3 (9V) battery holder, http://www.keyelco.com/product-pdf.cfm?p=710 AA CR2 A battery holder Keystone #500, 12mm CR1220 battery holder, Memory Protection Devices P/N BA9VPC, http://www.memoryprotectiondevices.com/datasheets/BA9VPC-datasheet.pdf.

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