The Second Hand Autek Research WM-1 SWR Power Active Peak Reading Meter is a specialized device for measuring power levels in radio frequency applications. This active meter requires a 12V power supply, ensuring it remains 'on' during use. The latest models feature a backlit display, enhancing visibility in various lighting conditions. The meter offers 20W, 200W, and 2kW scales, with a centre scale for readings at 5W, 50W, and 500W, making it versatile for different power levels.

One of the key functionalities of the WM-1 is its 'Peak' power setting, which captures peak power readings with slow decay, allowing users to monitor transient power levels effectively. This feature is particularly beneficial for applications involving Single Sideband (SSB) and Continuous Wave (CW) transmissions, where peak power can vary significantly. The display accuracy in these modes is crucial for operators seeking to optimize their transmission efficiency and ensure compliance with power limits.

In addition to the peak measurement capability, the WM-1 also includes an 'Average' setting that responds quickly to changes in power output. This feature is essential for users needing real-time transmission-level feedback. Overall, the Autek Research WM-1 is a reliable and precise tool for radio enthusiasts and professionals, providing vital metrics in effective power management in RF communications.