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Chelegance JKEYER-CPO16 Specs
| Product Type | CW Keyer & Practice Oscillator |
| Protocol Compatibility | WinKey Compatible |
| Operating Modes | Iambic A / Iambic B / Ultimatic / Bug |
| Key Support | Paddle and Straight Key |
| CW Speed Range | 10–54 WPM |
| Speed Control | Front Panel Rotary Knob |
| Speed Knob Lock | Supported |
| Sidetone Type | DDS Sine-Wave Sidetone |
| Sidetone Frequency Range | Approx. 350–900 Hz, Continuously Adjustable |
| Sidetone Control | Tone and Volume Knobs |
| Built-in Speaker | Yes |
| Audio Output | 3.5 mm Headphone / Line Output |
| CW Output | Opto-isolated, Active Low |
| PTT Output | Opto-isolated, Active Low |
| PTT Timing Control | Adjustable Lead and Tail Time |
| Message Memory | 3 Memories (M1–M3) |
| Computer Connection | USB Type-C |
| Power Supply | 5 V DC via USB |
| Operating Voltage Range | 4.3–5.5 V DC |
| Current Consumption | Approx. 30–100 mA @ 5 V |
| Standalone Operation | Supported |
| Enclosure Material | Aluminum Alloy (Anodized) |
| Front Panel | PCB Front Panel |
| Dimensions | 112 × 83 × 32 mm |
| Weight | Approx. 220 g |