User's Guide

Table Of Contents

SRP9100 RADIO P25 – 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 P25 digital 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 P25 digital voice signals. The Network Access

Code (NAC) 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 digital

transmissions with the correct NAC. Reception is not conditional upon the talkgroup 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 digital

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

An “S” icon indicates selective squelch.