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Video link:
Bilibili video – Function demonstration and introduction (before-and-after comparison video to be recorded)
Introduction
This project is forOpen-source uSDX shortwave radioDIY dynamic microphone with a 3.5mm interface, designed to significantly improve the SSB voice quality of the uSDX. It features a toggle switch for switching between different operating modes and is compatible with CWO (two button caps).
Features
The controls have two independent buttons. When in microphone mode, the button closest to the microphone is PTT (Push-to-Talk). When in keypad mode, both buttons become automatic keypads. Circuit design.@BH3PTS Enclosure design @BI9BPY Thank you both.
Materials List
Procurement list, PCB files and3D enclosure printing fileInThe attachments provide
Figure 1:The 3D-printed case requires three M3 x 10 screws, which are not shown in the diagram. Also, I need to buy some thin red and black wires.The one I bought was too large; I replaced it.。
Welding Installation Diagram
Please noteThe location where the red and black wires are soldered, after purchasing the microphone, there will be a red circle (⚪) marking at the soldering position of the red wire.; I cut open the 3.5mm audio cable (three-core) that I bought from PDD and used it, and if the colors don't match, you can use them.Multimeter measurementThe wire order, the circuit board has labeled order, the following is the wire order definition diagram:
When setting up the microphone stand tomorrow, please also record a comparison between it and a standard handheld microphone.
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