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7.0x5.1mm^2 package Miniature Crystal Clock Oscillator Abracon ASDMB series, 2.5x2.0mm package, http://www.abracon.com/Oscillators/ASDMB.pdf Miniature Crystal Clock Oscillator TXCO Fordahl DFA S11-OV/UOV, http://www.iqdfrequencyproducts.com/products/details/iqxo-70-11-30.pdf, 7.0x5.0mm^2 package SMD Crystal EuroQuartz MQ series http://cdn-reichelt.de/documents/datenblatt/B400/MQ.pdf, hand-soldering, 7.0x5.0mm^2 package SMD SMT crystal hand-soldering SMD Crystal Oscillator Seiko Epson SG-8002JA https://support.epson.biz/td/api/doc_check.php?mode=dl⟨=en&Parts=SG-8002DC, hand-soldering, 14.0x8.7mm^2 package SMD Crystal MicroCrystal CC1V-T1A series https://www.microcrystal.com/fileadmin/Media/Products/32kHz/Datasheet/CC1V-T1A.pdf, hand-soldering, 8.0x3.7mm^2 package SMD Crystal MicroCrystal CM9V-T1A series https://www.microcrystal.com/fileadmin/Media/Products/32kHz/Datasheet/CM9V-T1A.pdf, 1.6x1.0mm^2 package SMD Crystal Oscillator IDT https://www.idt.com/document/dst/xu-family-datasheet#page=17, 7.0x5.0mm IQD Crystal Clock Oscillator TG2520 series, https://support.epson.biz/td/api/doc_check.php?dl=app_TG2520SMN&lang=en Latest commits for file Schematics/circuit.pdf main synth_tools/RadioShaek2Board.diy 5515 lines 2bd01a1ff2 Add schematic, start on PCB sandwich, making some final-ish decisions about connecting to front panel and Pin 1, vertical PCB mount, replaces NLJ2MD-V, https://www.neutrik.com/en/product/nlj2mdxx-v speakON Chassis Connectors, 8 pole chassis connector, grey D-size flange, self tapping screw holes (A-screw), horizontal PCB mount, https://www.neutrik.com/en/product/nl4md-h-2 speakON Chassis Connectors, 4 pole male XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, steel retention lug, horizontal PCB mount, retention spring, https://www.neutrik.com/en/product/ncj6fa-v-0 Combo A series, 3 pole female receptacle, grounding: separate ground contact to mating connector shell to pin1 and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc5fav B Series, 3 pole male XLR receptacle, grounding: without ground/shell contact, vertical PCB mount, https://www.neutrik.com/en/product/nc3maav A Series, 5 pole male XLR receptacle.