T attenuator calculator

“PI” and “T” Network Attenuators (also known as PAD attenuators) are simple networks to attenuate an RF signal with or without altering the impedance. Useful to add to the input of a high gain amplifier, that needs to be driven by a high power radio. If you want to attenuate 10w to 1w, (10dB) you will need to build the attenuator with resistors capable of dissipating 10w. For a simple recieve attenuator, you can use simple 0.25w or 0.5w resistors.

You MUST use non inductive resistors, not wire wound!

Enter values and press ENTER or click the CALCULATE button
schematic diagram of T attenuator Attenuation: dB
Input Impedance: Ohms
Output Impedance Ohms
Perfect values
R1 Ohms
R2 Ohms
R3 Ohms

E12 Values E12 Performance
R1 Ohm Attenuation dB
R2 Ohm Zin Ohm
R3 Ohm Zout Ohm

E24 Values E24 Performance
R1 Ohm Attenuation dB
R2 Ohm Zin Ohm
R3 Ohm Zout Ohm

E48 Values E48 Performance
R1 Ohm Attenuation dB
R2 Ohm Zin Ohm
R3 Ohm Zout Ohm

E96 Values E96 Performance
R1 Ohm Attenuation dB
R2 Ohm Zin Ohm
R3 Ohm Zout Ohm

E192 Values E192 Performance
R1 Ohm Attenuation dB
R2 Ohm Zin Ohm
R3 Ohm Zout Ohm


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