Attenuators Bench Top - Step Attenuators - Manual 0 to 60 dB in 10 dB Steps Specifications Frequency: DC-18.0 , DC - 12 .4, DC - 8.0, and DC - 4.0 GHz units available Attenuation Values: 0 - 60 dB Attenuation Accuracy: Attenuation (dB) DC-18.0 DC-12.4 DC - 8.0 DC-4.0 10-60 + 0.6 or 2.5% + 0.5 or 2.5% + 0.5 or 2% + 0.4 or 2% Impedance: 50 Ohms VSWR: 1.25 @ DC - 4 GHz, 1.40 @ 4 - 12.4 GHz, 1.5 0 @ 12.4 - 18.0 GHz max Zero Position Insertion Loss: 0.3 dB @ DC-4 GHz, 0.5 dB @ 4-12.4 GHz, and 0.75 dB @ 12.4-18 GHz max. Power: 2 Watts average Operating Temperature Range: 0C to +55C Switching Repeatability: 0.05 dB Switching Life: 1,000,000 cycles Mechanical Stops: Clockwise @ Maximum, Counterclockwise @ Minimum Finish of Connectors: Passivated Stainless Steel DC - 18.0 GHz DC - 12.4 GHz DC - 4.0 GHz 7mm Precision STA-1043-18-7MM-79 DC - 18.0 GHz STA-1043-12-7MM-79 DC - 12.4 GHz STA-1043-04-7MM-79 DC - 4.0 GHz Type N STA-1043-18-NNN-79 DC - 18.0 GHz STA-1043-12-NNN-79 DC - 12.4 GHz STA-1043-04-NNN-79 DC - 4.0 GHz SMA STA-1043-18-SMA-79 44 STA-1043-12-SMA-79 STA-1043-04-SMA-79