User's Manual

SDM630 DMR TIER II – OPERATING INSTRUCTIONS

4.2.2 Squelch

This menu allows the channel’s default squelch mode to be modified.

If the selected channel is changed or the radio is switched off, the channel’s default squelch

setting will be restored.

Press the “OK” key for the “Squelch” Menu.

P25 Squelch Screen

For a DMR channel, pressing the ▼ and ▲ keys will allow selection of either Monitor,

Normal or Selective squelch mode.

For an analogue channel, pressing the

▼

and

▲

keys will allow selection of either

Monitor

or Normal squelch mode.

Digital Channel Monitor Mode:

The radio will receive any decryptable or clear DMR voice signals. The Colour Code (CC) is

not checked. An “M” icon on the display indicates monitor mode.

Digital Channel Normal Mode:

When Normal squelch is selected, the radio will receive all decryptable or clear DMR

transmissions with the correct CC. It does not check the Talk Group or Unit ID. An “N” icon

on the display indicates normal squelch.

Digital Channel Selective Mode

If Selective squelch is chosen, the radio will only receive decryptable or clear DMR

transmissions with the correct CC and Talk Group ID (TGID) or correct CC and Unit ID. An

“S” icon indicates selective squelch.