50 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 50 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.

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.

For your specific application, please contact JFW or use our Inquiry Form.

JFW Model #	Impedance	dB Total	dB Step	Frequency Range	Switching Speed	RF Input Power	Control	RF Connectors
50P-0033	50 Ohm	10 dB	1 dB	DC-1500 MHz	6 mS	2 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-0034	50 Ohm	100 dB	10 dB	DC-1500 MHz	6 mS	1 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-0531	50 Ohm	127 dB	1 dB	DC-1500 MHz	6 mS	1 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-0542	50 Ohm	10 dB	1 dB	DC-2800 MHz	6 mS	2 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-0591	50 Ohm	85 dB	1 dB	DC-3000 MHz	6 mS	1 Watt	+12 Vdc	N, SMA
50P-0975	50 Ohm	63 dB	1 dB	DC-1000 MHz	6 mS	0.5 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1126	50 Ohm	31.5 dB	0.5 dB	DC-1000 MHz	6 mS	1 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1128	50 Ohm	63.75 dB	0.25 dB	DC-2000 MHz	6 mS	0.5 Watt	+12 Vdc	SMA
50P-1139	50 Ohm	1.5 dB	0.1 dB	DC-2000 MHz	6 mS	1 Watt	+12 Vdc	SMA
50P-1179	50 Ohm	15 dB	1 dB	DC-2000 MHz	6 mS	1 Watt	+12 Vdc	SMA
50P-1207	50 Ohm	63 dB	1 dB	DC-2500 MHz	6 mS	0.5 Watt	TTL	BNC, N, SMA, TNC
50P-1208	50 Ohm	15 dB	1 dB	DC-2500 MHz	6 mS	0.5 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1209	50 Ohm	15.5 dB	0.5 dB	DC-2500 MHz	6 mS	0.5 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1210	50 Ohm	31 dB	1 dB	DC-2500 MHz	6 mS	0.5 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1211	50 Ohm	31.5 dB	0.5 dB	DC-2500 MHz	6 mS	0.5 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1212	50 Ohm	63 dB	1 dB	DC-2500 MHz	6 mS	0.5 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1224	50 Ohm	63.5 dB	0.5 dB	DC-3000 MHz	6 mS	1 Watt	+12 Vdc	SMA
50P-1499	50 Ohm	15 dB	1 dB	DC-500 MHz	6 mS	2 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1633	50 Ohm	64.5 dB	0.1 dB	DC-1000 MHz	6 mS	1 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1683	50 Ohm	70 dB	10 dB	DC-2500 MHz	6 mS	0.5 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1705	50 Ohm	64.5 dB	0.1 dB	DC-200 MHz	6 mS	1 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1714	50 Ohm	128.5 dB	0.1 dB	DC-100 MHz	6 mS	1 Watt	+12 Vdc	N, SMA, TNC
50P-1849	50 Ohm	63 dB	1 dB	DC-2700 MHz	10 mS	10 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1930	50 Ohm	63 dB	1 dB	DC-200 MHz	6 mS	10 Watt	TTL	BNC, N, SMA, TNC
50P-1941	50 Ohm	15 dB	1 dB	DC-3000 MHz	10 mS	10 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1953	50 Ohm	120 dB	10 dB	DC-2500 MHz	6 mS	1 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1974	50 Ohm	127 dB	1 dB	DC-250 MHz	6 mS	2 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1975	50 Ohm	127 dB	1 dB	DC-500 MHz	6 mS	2 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1976	50 Ohm	127 dB	1 dB	DC-1000 MHz	6 mS	2 Watt	+12 Vdc	BNC, N, SMA, TNC
50P-1978	50 Ohm	63 dB	1 dB	DC-2700 MHz	6 mS	2 Watt	+12 Vdc	SMA
50P-2033	50 Ohm	1.5 dB	0.1 dB	DC-1000 MHz	6 mS	1 Watt	+12 Vdc	N, SMA, TNC