Kenwood TK-7100H Service Manual

Also see for TK-7100H: Specifications Service manual

Contents

2 Channel Information7An Alert Tone sounds when the received OptionSignalling matches the Signalling programmed in thetransceiver.Refer to “6.3 DTMF Decode” for details.You can use QT/DQT and DTMF at the same time.Refer to each section for details.2.1.9 SP UnmuteThis function allows you to program the transceiverso it will unmute the speaker upon the correct match. CarrierThe transceiver unmutes when receiving signal isa carrier; also known as carrier squelch.You can select Carrier only when the QT/DQTDecode is set to “None.” QT/DQTThe transceiver’s speaker umutes when thereceive signal’s QT/DQT code matches theQT/DQT code programmed for the Channel.You can select QT/DQT only when the QT/DQTDecode is not set to “None”. Carrier + DTMFThe transceiver’s speaker umutes when thereceive signal matches carrier and the DTMFSignalling.You can select Carrier + DTMF only when theQT/DQT Decode is set to “None” and the OptionSignalling is set to “DTMF”. QT/DQT + DTMFThe transceiver’s speaker umutes when thereceive signal’s QT/DQT code and the DTMFSignalling match.You can select QT/DQT + DTMF only when theQT/DQT Decode is not set to “None” and theOption Signalling is set to “DTMF”.2.1.10 Busy Channel LockoutIf the user transmits on a channel while other groupsare using that channel, the user may interfere withcommunications. The Busy Channel Lockout functionprevents such interference.In Systems where this function is not activated, theuser must monitor the Channel using the Monitorfunction before transmitting.This function prevents the user from interfering withother users without having to first monitor theChannel status.There are three methods to inhibit transmission:“Carrier”, “QT/DQT” and “DTMF”.You can transmit when the transceiver does not havea Carrier present on the channel. CarrierThe transceiver does not transmit as long as itreceives a Carrier. QT/DQTThe transceiver does not transmit when thereceived QT/DQT code does not match theQT/DQT code programmed for the Channel.The transceiver does not transmit when receivingonly a Carrier. DTMFThe transceiver may not transmit unless thereceived DTMF code matches the DTMF codeprogrammed in Option Signalling. The transceivermay start to transmit as soon as the receivedDTMF code matches the DTMF codeprogrammed in Option Signalling.2.1.11 Beat ShiftThis function eliminates problems of the receiver’sinternal beat caused by internal oscillators.The harmonic of the oscillator in the microprocessormay interfere with reception. You can prevent thisproblem by slightly shifting the frequency of theoscillator.2.1.12 Scan AddThis function adds a Channel to the Scan list.The transceiver monitors only channels that havebeen added to scan list.2.1.13 Priority ChannelThe transceiver can scan a programmed PriorityChannel. You can program the Priority Channel for