75 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.
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 |
---|---|---|---|---|---|---|---|---|
75P-022 | 75 Ohm | 63 dB | 1 dB | DC-1000 MHz | 6 mS | 1 Watt | +12 Vdc | BNC, F, N |
75P-033 | 75 Ohm | 127 dB | 1 dB | DC-1000 MHz | 6 mS | 1 Watt | +12 Vdc | BNC, F, N |
75P-089 | 75 Ohm | 63.75 dB | 0.25 dB | DC-500 MHz | 6 mS | 1 Watt | +12 Vdc | BNC, F, N |
75P-093 | 75 Ohm | 110 dB | 10 dB | DC-1000 MHz | 6 mS | 1 Watt | +12 Vdc | BNC, F, N |
75P-119 | 75 Ohm | 63 dB | 1 dB | DC-1000 MHz | 6 mS | 1 Watt | TTL | BNC, F |
75P-135 | 75 Ohm | 25.5 dB | 0.1 dB | DC-1000 MHz | 10 mS | 0.5 Watt | TTL | BNC, F, N, TNC |
75P-154 | 75 Ohm | 63.75 dB | 0.25 dB | DC-1000 MHz | 10 mS | 0.5 Watt | TTL | BNC, F, N, TNC |
75P-155 | 75 Ohm | 95.5 dB | 0.5 dB | DC-1000 MHz | 10 mS | 0.5 Watt | TTL | BNC, F, N, TNC |
75P-157 | 75 Ohm | 95.5 dB | 0.5 dB | DC-1000 MHz | 6 mS | 0.5 Watt | +12 Vdc | BNC, F, N, TNC |
75P-163 | 75 Ohm | 63.75 dB | 0.25 dB | DC-1000 MHz | 6 mS | 0.5 Watt | +12 Vdc | BNC, F, N, TNC |
75P-180 | 75 Ohm | 64.5 dB | 0.1 dB | DC-1000 MHz | 10 mS | 0.5 Watt | TTL | BNC, F, N, TNC |
75P-186 | 75 Ohm | 31 dB | 1 dB | DC-1000 MHz | 6 mS | 0.5 Watt | +12 Vdc | BNC, F |
75P-198 | 75 Ohm | 31 dB | 1 dB | DC-1218 MHz | 6 mS | 0.5 Watt | +12 Vdc | BNC, F, N, TNC |
75P-199 | 75 Ohm | 95 dB | 1 dB | DC-2150 MHz | 10 mS | 0.5 Watt | +12 Vdc | F |
75P-200 | 75 Ohm | 63 dB | 1 dB | DC-2150 MHz | 10 mS | 0.5 Watt | +12 Vdc | F |
75P-201 | 75 Ohm | 95.5 dB | 0.5 dB | DC-1218 MHz | 6 mS | 0.5 Watt | +12 Vdc | BNC, F, N, TNC |
75P-203 | 75 Ohm | 95 dB | 1 dB | DC-1218 MHz | 6 mS | 0.5 Watt | +12 Vdc | BNC, F, N, TNC |
75P-224 | 75 Ohm | 31.75 dB | 0.25 dB | DC-2150 MHz | 10 mS | 0.5 Watt | +12 Vdc | BNC, F, N |
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Programmable Attenuator DC-1000 MHz 0-110dB x 10dB | 75P-093
JFW Model #: 75P-093
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 110 dB
dB Step: 10 dB
Frequency Range: DC-1000 MHz
Switching Speed: 6 mS
RF Input Power: 1 Watt
Control Voltage: +12 Vdc
RF Connectors: BNC, F, N
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-1000 MHz 0-127dB x 1dB | 75P-033
JFW Model #: 75P-033
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 127 dB
dB Step: 1 dB
Frequency Range: DC-1000 MHz
Switching Speed: 6 mS
RF Input Power: 1 Watt
Control Voltage: +12 Vdc
RF Connectors: BNC, F, N
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-1000 MHz 0-25.5dB x 0.1dB | 75P-135
JFW Model #: 75P-135
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 25.5 dB
dB Step: 0.1 dB
Frequency Range: DC-1000 MHz
Switching Speed: 10 mS
RF Input Power: 0.5 Watts
Control: TTL
RF Connectors: BNC, F, N, TNC
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-1000 MHz 0-31dB x 1dB | 75P-186
JFW Model #: 75P-186
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 31 dB
dB Step: 1 dB
Frequency Range: DC-1000 MHz
Switching Speed: 6 mS
RF Input Power: 0.5 Watts
Control Voltage: +12 Vdc
RF Connectors: BNC, F
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-1000 MHz 0-63.75dB x 0.25dB | 75P-154
JFW Model #: 75P-154
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 63.75 dB
dB Step: 0.25 dB
Frequency Range: DC-1000 MHz
Switching Speed: 10 mS
RF Input Power: 0.5 Watts
Control: TTL
RF Connectors: BNC, F, N, TNC
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-1000 MHz 0-63.75dB x 0.25dB | 75P-163
JFW Model #: 75P-163
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 63.75 dB
dB Step: 0.25 dB
Frequency Range: DC-1000 MHz
Switching Speed: 6 mS
RF Input Power: 0.5 Watts
Control Voltage: +12 Vdc
RF Connectors: BNC, F, N, TNC
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-1000 MHz 0-63dB x 1dB | 75P-022
JFW Model #: 75P-022
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 63 dB
dB Step: 1 dB
Frequency Range: DC-1000 MHz
Switching Speed: 6 mS
RF Input Power: 1 Watt
Control Voltage: +12 Vdc
RF Connectors: BNC, F, N
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-1000 MHz 0-63dB x 1dB | 75P-119
JFW Model #: 75P-119
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 63 dB
dB Step: 1 dB
Frequency Range: DC-1000 MHz
Switching Speed: 6 mS
RF Input Power: 1 Watt
Control: TTL
RF Connectors: BNC, F
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-1000 MHz 0-64.5dB x 0.1dB | 75P-180
JFW Model #: 75P-180
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 64.5 dB
dB Step: 0.1 dB
Frequency Range: DC-1000 MHz
Switching Speed: 10 mS
RF Input Power: 0.5 Watts
Control: TTL
RF Connectors: BNC, F, N, TNC
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-1000 MHz 0-95.5dB x 0.5dB | 75P-155
JFW Model #: 75P-155
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 95.5 dB
dB Step: 0.5 dB
Frequency Range: DC-1000 MHz
Switching Speed: 10 mS
RF Input Power: 0.5 Watts
Control: TTL
RF Connectors: BNC, F, N, TNC
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-1000 MHz 0-95.5dB x 0.5dB | 75P-157
JFW Model #: 75P-157
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 95.5 dB
dB Step: 0.5 dB
Frequency Range: DC-1000 MHz
Switching Speed: 6 mS
RF Input Power: 0.5 Watts
Control Voltage: +12 Vdc
RF Connectors: BNC, F, N, TNC
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-1218 MHz 0-31dB x 1dB | 75P-198
JFW Model #: 75P-198
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 31 dB
dB Step: 1 dB
Frequency Range: DC-1218 MHz
Switching Speed: 6 mS
RF Input Power: 0.5 Watts
Control Voltage: +12 Vdc
RF Connectors: BNC, F, N, TNC
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-1218 MHz 0-95.5dB x 0.5dB | 75P-201
JFW Model #: 75P-201
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 95.5 dB
dB Step: 0.5 dB
Frequency Range: DC-1218 MHz
Switching Speed: 6 mS
RF Input Power: 0.5 Watts
Control Voltage: +12 Vdc
RF Connectors: BNC, F, N, TNC
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-1218 MHz 0-95dB x 1dB | 75P-203
JFW Model #: 75P-203
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 95 dB
dB Step: 1 dB
Frequency Range: DC-1218 MHz
Switching Speed: 6 mS
RF Input Power: 0.5 Watts
Control Voltage: +12 Vdc
RF Connectors: BNC, F, N, TNC
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-2150 MHz | 0-31.75dB x 0.25dB | 75P-224
JFW Model #: 75P-224
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 31.75 dB
dB Step: 0.25 dB
Frequency Range: DC-2150 MHz
Switching Speed: 10 mS
RF Input Power: 0.5 Watts
Control Voltage: +12 Vdc
RF Connectors: BNC, F, N
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-2150 MHz 0-63dB x 1dB | 75P-200
JFW Model #: 75P-200
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 63 dB
dB Step: 1 dB
Frequency Range: DC-2150 MHz
Switching Speed: 10 mS
RF Input Power: 0.5 Watts
Control Voltage: +12 Vdc
RF Connectors: F
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-2150 MHz 0-95dB x 1dB | 75P-199
JFW Model #: 75P-199
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 95 dB
dB Step: 1 dB
Frequency Range: DC-2150 MHz
Switching Speed: 10 mS
RF Input Power: 0.5 Watts
Control Voltage: +12 Vdc
RF Connectors: F
Documentation: Data Sheet | Drawing -
Programmable Attenuator DC-500 MHz 0-63.75dB x 0.25dB | 75P-089
JFW Model #: 75P-089
Type: Relay programmable attenuator
Impedance: 75 Ohm
dB Total: 63.75 dB
dB Step: 0.25 dB
Frequency Range: DC-500 MHz
Switching Speed: 6 mS
RF Input Power: 1 Watt
Control Voltage: +12 Vdc
RF Connectors: BNC, F, N
Documentation: Data Sheet | Drawing