How can intermodulation interference between two transmitters in close proximity often be reduced or eliminated?

Question

Accepted Answer

By installing a terminated circulator or ferrite isolator in the feed line to the transmitter and duplexer .

Answer

By using a Class C final amplifier with high driving power.

Answer

By installing a band-pass filter in the antenna feed line.

Answer

By installing a low-pass filter in the antenna feed line.

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