Version: 1.01 Field Programming Reference (FPRG) 306 EDIT MENUthe speaker. It operates in the signalling squelch modewhen it makes the repeat operation." Scrambler BackupIt can restore the Voice Scrambler configuration.When this function is enabled, the On/Off status isbackup even if you turn the TKR-751/851 OFF afterVoice Scrambler is on.Note:! You can use this function only when the optional VoiceScrambler Board is installed in it.! Refer to the Modification Information when installing theoptional Voice Scrambler Board in the TKR-750/850/751/851." TX Standby on FrequencyIt can shift a transmission frequency when the TKR-750/850/751/851 is in standby mode. (Refer to FUNC13 TX Standby Frequency function.)" PTT PriorityIt can configure the priority of the repeater PTT, theexternal PTT, and the Local Mic PTT. When theselected PTT configuration has higher priority than thecurrent PTT, the TKR-750/850/751/851 switches thesignalling and the modulation signal linecorresponding to the selected PTT configuration thathas higher priority. Change the priority of the PTT bythe spin buttons. (Refer to FUNC 6.7 PTT Priority.)" Firmware ProgramIt can allow the TKR-750/850/751/851 enter in theFirmware Programming Mode. When this function isenabled, the it enters Firmware Programming Modeby pressing the PF1 key and the power switch on atthe same time.Note: You must run the “FPRO.EXE” in order to write theFirmware program. Refer to the Service Manual fordetails.YOU MUST CONFIRM THAT THIS FUNCTION SHOULDBE DISABLED BEFORE SHIPPING TO THE END USER.OTHERWISE, IT MIGHT HAVE SOME TROUBLE TOREWRITE OR BROKEN IT ACCIDENTALLY.RangeChecked The Voice Scrambler status is backup.Unchecked The Voice Scrambler status iscanceled and return to the default.Default UncheckedRangeChecked Wait a call with the transmissionfrequency configured to each channel.Unchecked Shifts the transmission frequency by-18.75 kHz and wait a call.Default UncheckedDefaultPriority 1: Local Mic PTTPriority 2: External PTTPriority 3: Repeater PTTRangeChecked Allow to enters FirmwareProgramming Mode.Unchecked Not allow to enters FirmwareProgramming ModeDefault Unchecked