The TWPC-0305-1 covers 30 – 40 MHz and can handle 150 – 350 W based on coupling. N Female terminations. The tuning range of these cavities is approximately +/- 2.5 MHz from center frequency as built. All cavities are tuned to specified frequencies prior to shipping. No further adjustments should be required. The positive locking mechanism allows for quick field re-tuning if frequency changes become necessary.