The A8P-12N-0JK from G.T. Microwave, Inc. is a RF Variable Attenuator with Frequency 400 to 450 MHz, Attenuation Range 79.98 dB, Attenuation Step 0.0195 dB, Power 1 W, P1dB 5 dBm. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for A8P-12N-0JK can be seen below.