ProgRock enclosure
Description
This Is An Enclosure For A Programmable Crystal Replacement Available From Qrp Labs (Https://Www.Qrp-Labs.Com/Progrock.Html). The Kit Consists Of A Minimalist Controller For A Si5351A Clock Generator Chip And Can Produce Up To Three Squarewave Outputs Between E Few Khz And Approx 300 Mhz. It Can Be Gps Disciplined For Accuracy Better Than 1 Ppm And Up To 8X3 Frequencies Can Be Programmed Via A Serial Interface. The Enclosure Consists Of A Bottom- And A Top Part. The Bottom Part Holds The Pcb And Includes A Hole Through Which The Rx/Tx-Signals Of The Serial Interface Are Accessible. For This And The Other Connections I Use Dupont Line Connectors, Which Are Glued With Two Part Epoxy Adhesive To The Enclosure Walls Next To The Holes. The Top Part Has Holes For The Power Supply (5,5/2,5 Mm Dc Socket), The Sma-Connector For The Clk0 Output, A Header With All The Frequency Outputs, The Connector For The Gps (Optional, If Not Used Connect 1Pps To Ground) And Finally A 3-Way Dip Switch For Selecting The Frequency Bank. This Dip Switch Is Soldered To A Small Piece Of Veroboard And Afterwards The Veroboard Glued In Place. Additionally One Will Need 4 Self-Tapping Screws 3X6 Mm To Mount The Pcb And 4 Self-Tapping Screws 3X9 Mm To Tighten The Bottom- And Top-Parts Together.
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