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Partyline: Can I disable the MT-1 input/output terminations?

Partyline: Can I disable the MT-1 input/output terminations?

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The MT-1 needs the internal terminations on the PCB because the transformers on the MT-1 can become unstable if the terminations are removed, thus it is NOT RECOMMENDED to remove the terminations on the PCB.   When using an MT-1 turn off the termination at the PL mainstation or PL power supply. If the termination is in let’s say a Cellcom base station where the termination is permanent, still disable the termination in the unit and not at the MT-1.
Use only one MT-1 per PL channel, the use of more than one will result in a double termination / lower audio level on the channel.

The MT-1 unit is used to provide isolation between two powered PL systems where you have issues with ground loops or earth hum

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