75 Ohm relay programmable attenuator BNC female DC-1000MHz attenuation range 0 to 63dB by 1dB steps

75 Ohm relay programmable attenuator with BNC female75 Ohm Relay Programmable Attenuators

A programmable attenuator is a variable attenuator with a specific dB step size and total attenuation.  All of the models in this table are 75 Ohm impedance with electro-mechanical relay design.  The attenuation steps are controlled parallel control lines.  JFW has been designing, manufacturing, and delivering programmable attenuators for over 25 years.  For your specific application, please contact JFW for assistance or use our Inquiry Form.

Control Lines

The attenuators are available with either TTL or direct Voltage control. For direct Voltage control the DC voltages are typically +12Vdc, +15Vdc, +24Vdc, or +28Vdc.  These DC Voltages are applied to the control feedthru pins to activate an attenuation step. With no control applied the relay is failsafe to the thru path setting (i.e. 0dB). Activate multiple dB steps simultaneously to set combination attenuation values.  Example: to achieve 7dB of total attenuation activate the 1dB/2dB/4dB steps simultaneously.

Frequently Asked Questions

JFW Model #ImpedancedB TotaldB StepFrequency StartFrequency StopSwitching SpeedRF Input PowerControlRF Connectors
75P-02275 Ohm63 dB1 dBDC1000 MHz6 mS1 Watt+12 VdcBNC, F, N
75P-03375 Ohm127 dB1 dBDC1000 MHz6 mS1 Watt+12 VdcBNC, F, N
75P-08975 Ohm63.75 dB0.25 dBDC500 MHz6 mS1 Watt+12 VdcBNC, F, N
75P-09375 Ohm110 dB10 dBDC1000 MHz6 mS1 Watt+12 VdcBNC, F, N
75P-11975 Ohm63 dB1 dBDC1000 MHz6 mS1 WattTTLBNC, F
75P-13575 Ohm25.5 dB0.1 dBDC1000 MHz10 mS0.5 WattTTLBNC, F, N, TNC
75P-15475 Ohm63.75 dB0.25 dBDC1000 MHz10 mS0.5 WattTTLBNC, F, N, TNC
75P-15575 Ohm95.5 dB0.5 dBDC1000 MHz10 mS0.5 WattTTLBNC, F, N, TNC
75P-15775 Ohm95.5 dB0.5 dBDC1000 MHz6 mS0.5 Watt+12 VdcBNC, F, N, TNC
75P-16375 Ohm63.75 dB0.25 dBDC1000 MHz6 mS0.5 Watt+12 VdcBNC, F, N, TNC
75P-18075 Ohm64.5 dB0.1 dBDC1000 MHz10 mS0.5 WattTTLBNC, F, N, TNC
75P-18675 Ohm31 dB1 dBDC1000 MHz6 mS0.5 Watt+12 VdcBNC, F
75P-19875 Ohm31 dB1 dBDC1218 MHz6 mS0.5 Watt+12 VdcBNC, F, N, TNC
75P-19975 Ohm95 dB1 dBDC2150 MHz10 mS0.5 Watt+12 VdcF
75P-20075 Ohm63 dB1 dBDC2150 MHz10 mS0.5 Watt+12 VdcF
75P-20175 Ohm95.5 dB0.5 dBDC1218 MHz6 mS0.5 Watt+12 VdcBNC, F, N, TNC
75P-20375 Ohm95 dB1 dBDC1218 MHz6 mS0.5 Watt+12 VdcBNC, F, N, TNC
75P-22475 Ohm31.75 dB0.25 dBDC2150 MHz10 mS0.5 Watt+12 VdcBNC, F, N