Flange-mounted attenuator, with a maximum power of 250 watts and a maximum frequency of 4 GHz. It uniformly reduces the power of the RF signal, and even under the maximum power condition, it only generates a very small reflection. Flange attenuators are usually used in high-power amplifiers and are used as terminal attenuators in isolators. In isolators, a lower level of signal sampling may be required. For a frequency of up to 4 GHz and a power of up to 250 watts, the standard dB values are 1, 2, 3, 4, 5, 6, 10, 20 and 30. Other designs can be provided upon request.