Chelegance CPO16 CW Keyer & Code Practice Oscillator is a versatile all‑in‑one CW keyer and Morse code practice oscillator designed to bring both off‑air training and on‑air operation into a single, compact desktop unit. Built for convenience and performance, it offers full WinKey compatibility for seamless integration with contest and logging software, while also supporting standalone use with a built‑in speaker and headphone output for flexible operation without a computer. Featuring a smooth DDS sine‑wave sidetone for reduced listening fatigue and cleaner signal shaping, along with opto‑isolated CW and PTT outputs for reliable radio interfacing, the unit delivers a professional‑grade experience in everyday use. With multiple keying modes—including Iambic A, Iambic B, Ultimatic, and Bug—support for both paddle and straight keys, and an adjustable speed range of 10 to 54 WPM, it adapts easily to operators of all skill levels. Compact, durable, and thoughtfully designed, the JKEYER‑CPO16 serves as a complete desktop CW solution for practice, contesting, and regular amateur radio operation.

Key Features:

- CW Keyer and Practice Oscillator in One Desktop Unit

- Practice Off-Air, Operate On-Air with One Device

- WinKey Compatible for Logging and Contest Software Integration

- Standalone Desktop Use with Built-In Speaker and Headphone Support

- Smooth DDS Sidetone and Reliable Isolated Outputs for Comfortable CW Operation

Ports:

• USB‑C Port: Power input, PC connection, and firmware updates

• PHONE Port: 3.5 mm TRS for headphones or powered speaker

• STR‑KEY Input: Straight key input

• PADDLE Input: Iambic paddle input

• CW Output: Opto‑isolated keying output (active low)

• PTT Output: Opto‑isolated PTT output (active low)

Additional Features & Specifications:

• 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: Approximately 350–900Hz, continuously adjustable

• Sidetone Control: Dedicated tone and volume knobs

• Built‑in Speaker: Yes

• Audio Output: 3.5mm 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: 5VDC via USB

• Operating Voltage Range: 4.3–5.5 VDC

• Current Consumption: Approximately 30–100mA at 5VDC

• Standalone Operation: Supported

• Enclosure Material: Anodized aluminum alloy

• Front Panel: PCB front panel

• Dimensions: 4.41 x 3.27 x 1.26in. (112 × 83 × 32mm)

• Weight: Approximately 0.49lbs. (220g)