EFJohnson FM Portable Radio Intrinsically-Safe SMARTNET, SmartZone Conventional, 7700 Series manual

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CONVENTIONAL FEATURES

(approximately 1 second). This function may be useful, for example, during weak signal conditions if intermittent squelching makes a message difficult to understand.

Busy Channel Lockout

The Busy Channel Lockout feature (also called Transmit Disable On Busy) automatically disables the transmitter if the channel is busy when the PTT switch is pressed. When a busy condition is detected by this feature, the transmitter is disabled, “BUSY” is indicated in the lower part of the display, and a tone similar to a standard telephone busy tone sounds until the PTT switch is released. This feature is programmed to operate in one of the following modes on each channel:

Off - The transmitter keys even if the channel is busy.

Noise - The transmitter is disabled if any signal is detected on the channel.

Tone - The transmitter is disabled if the detected squelch coding is not correct.

If busy override is permitted by programming, it is possible to transmit even when the transmitter is disabled by this feature. Simply release the PTT switch and then quickly press it again.

Call Guard Squelch

General

Call Guard® squelch (also called CTCSS/DCS signaling) may be programmed on conventional channels. This feature eliminates distracting messages intended for others using the channel by using a subaudible tone or digital code to control the squelch. This tone or code is unique to a user or talk group on that channel. It is transmitted by the mobile placing a call, and if Call Guard squelch is programmed in the mobile receiving the call, it must detect the correct tone or code to receive the call.

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Contents Series Page Page Safety Information Other Important Operating Information Smartnet II Features FeaturesGeneral Features Conventional FeaturesTable of Contents Intrinsically Safe Classification Conventional Mode Option Switch FunctionsSMARTNET/SMARTZONE Mode Top Panel Indicators Controls and DisplayTop Panel Controls Side Controls Front Panel Keys 3-Key Model Front Panel Keys 15-Key Model Display Turning Power On and Setting Volume General OperationIntroduction Backlight Option SwitchesChannel Select Low Battery IndicationKeypad Lock Channel and Zone SelectionTime-Out Timer Zone SelectHome Zone Tone Enable/Disable ScanningIntroduction Radio Wide Scanning Standard ScanningScan Resume Delay Standard Mode Scan ListRadio Wide Mode Scan List Determining Which Channels are in Scan List Nuisance Channel DeleteConventional and SMARTNET/SmartZone Operation SMARTNET/SmartZone Operation Conventional OperationConventional Features Display Mode SelectionMonitoring Before Transmitting Monitor Mode Call Guard Squelch Busy Channel LockoutPenalty Timer Conversation Timer Power Output SelectRepeater Talk-Around Conventional Mode Scanning GeneralSelecting a Scan List Programming a Scan List Transmitting in Scan ModeChanging The Priority Channel Priority Channel SamplingStandard Conventional Calls SMARTNET/SMARTZONE Features DTMF/ANI SignalingViewing Unit ID Standard Group Calls Placing an Enhanced Private Conversation Call Enhanced Private Conversation CallsSMARTNET/SMARTZONE Features Receiving an Enhanced Private Conversation Call Placing a Private Conversation II Call Private Conversation II CallsSMARTNET/SMARTZONE Features Receiving a Private Conversation II Call Telephone CallsPlacing a Telephone Call SMARTNET/SMARTZONE Features SMARTNET/SMARTZONE Features Call Alert Messaging Sending Status Conditions Failsoft Operation Emergency Alarm and Emergency CallDynamic Regrouping SMARTNET/SmartZone ScanningDetermining Current Site and Searching For New Site Miscellaneous Locking/Unlocking a SiteSupervisory Tones Miscellaneous Rechargeable Battery Pack Miscellaneous Licensing Dealer ProgrammingSpeaking Into Microphone Operation At Extended RangeIntrinsically Safe Classification Transceiver ServiceClassification of Atmospheres Class/Group Classification of Hazardous Areas DivisionTypical Hazard Group Class IndexSmartnet 6 Index