How do I connect my CW Morse 24 Series PCB Straight Key using a 3.5mm TRS AUX cable?

[DeJohn]

Connecting your CW Morse 24 Series PCB Straight Key with a standard 3.5mm TRS stereo AUX cable is straightforward. Here's a step-by-step guide: First, understand the wiring configuration. Some keys, oscillators, and software may require you to jumper the RING and SLEEVE of the stereo AUX cable. This setup allows you to use a straight key, which is mono, with a stereo cable. Second, ensure your key is clean. Use a dry paintbrush or compressed air to remove any dust or debris, which is essential for proper keying. Finally, maintain the key contacts. If the contacts need cleaning, use a small strip of 220-grit sandpaper or a paper nail file. Gently close the contacts and pull the sandpaper through to remove any dirt or oxidation. Flip the paper and repeat the process to ensure a clean contact surface. Following these steps will help you successfully connect and utilize your CW Morse 24 Series PCB Straight Key with a 3.5mm TRS AUX cable, providing a reliable setup for your Morse code operation.