74 Function Reference Version: 1.1119 OSTThis function allows you to change the Decode/Encodecombination of the QT/DQT Signaling without changingthe transmit/receive frequencies.This is used when there are several Talk Groups usingQT/DQT codes on the same frequency.You can configure a maximum of 40 pairs of OST QT/DQT Decode and QT/DQT Encode to the OST table. TheQT/DQT Encode/Decode pair and the OST table areswitched when the PF OST key is pressed.You can configure the QT/DQT Decode/Encode pair forOST to each channel using KPG-89D.Note:" The OST is disabled when changing the Zone/Channel. TheOST is enabled again when the transceiver returns to theChannel if the OST Status Memory is enabled. (Refer to 19.1OST Status Memory.)" When the OST and Talk Around functions are both activated, theOST function is executed first, as the Signaling operation." The OST List number appears on the Sub display when the“OST Number” is selected in Optional Features window >Common-Page1 tab.! Transceiver Operation# Enabling the OST Function1. Press the PF OST key.The OST Name appears for 2 seconds and theOST function is enabled.# Disabling the OST Function1. Press the PF OST key.The OST function is disabled.# Selecting the OST List1. Press and hold the PF OST key for more than 1second.The transceiver enters List Selection Mode.2. Select the OST List.• CommonPress [B]/ [C].• TK-2180/ 3180 *1Turn Selector.• TK-7180/ 8180 *1[ ]/ [ ] key.3. Select the OST and press [S].The selected OST becomes is enabled.*1 The List Selection Key (Selector) is enabled.! Configuration using KPG-89D• Assigning functions to the PF keys (Refer toFPRG 6.8 Key Assignment.)19.1 OST Status MemoryThis function allows a user to stack the OST codeconfigured to each channel even if the transceiver isturned OFF or the channel is changed.The OST function is disabled when the Channel ischanged or the transceiver is turned OFF if this function isdisabled.You can enable/disable the OST Status Memory functionusing KPG-89D.! Configuration using KPG-89D• Configuring the OST Status Memory (Refer toFPRG 6.7.4 Conventional tab - OST StatusMemory.)19.2 Tone OffThis function allows a user to select Tone Off in OSTMode.You can disable the QT/DQT Encode/Decode.You can enable/ disable the Tone Off function using KPG-89D.! Configuration using KPG-89D• Configuring the Tone Off function (Refer to FPRG6.7.4 Conventional tab - Tone Off.)19.3 Direct OSTThis function allows a user to select the OST using thekeypad.You can enable/disable this function using KPG-89D.