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| About the COM3 MIC button | ||||
| 40 channel UHF FM Transceiver | ||||
| Pressing the COM3 MIC button selects the Com 3 transmitter and receiver. | ||||
| Check that the DU button on the front of Com 3 is OUT | ||||
| When COM3 MIC is selected, pressing COM1 and COM2 simultaneously monitors Comms 1 & 2 but transmission is only on Com 3 | ||||
| The COM3 MIC indicator light blinks while the Com 3 transmitter is keyed on | ||||
| Include these indicators in your panel scan to detect inadvertent transmitter activation |