Radio Shack HTX-242 Using Dtmf, Using Group Calling, Name Assignment Dtmf Page Sequence

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Using DTMF Page

DTMF page lets other operators page you. To turn on DTMF page, press DTMF so DTMF appears. The HTX-242 does not pass trans- missions to the speaker until it receives the sequence you stored in DTMF Memory 0. If DTMF Memory 0 is empty, DTMF page does not operate.

When you receive a DTMF page, the HTX-242 turns on the speaker and turns off DTMF page so all transmissions come through.

Notes:

•If you turn on auto-reply, the HTX-242 immediately sends the sequence in the currently selected DTMF memory when it receives the sequence you set. See “Using Auto-Reply” on Page 34.

!• If you turn on tone-alert, the HTX-242 sounds four tones when it receives its DTMF sequence you set. See “Setting the DTMF Page and Subaudible Tone Alert” on Page 37.

•If you turn on DTMF auto send, the HTX-242 opens squelch only for transmissions that start with the sequence stored in DTMF Memory 0. After the transmission, DTMF squelch is still turned on. See “Using DTMF Auto Send” on Page 35.

Using Group Calling

Group calling lets you page several users at once. Each user must have a transceiver that has this feature. When the HTX-242 receives at least three DTMF tones followed by the sequence A-B-C, it compares the DTMF tones it received before the A-B-C with the sequence in DTMF Memory 0. If the tones match, it operates as if it received the entire sequence.

For example, if these sequences are assigned to a group:

Name	Assignment	DTMF Page Sequence
George	West Side	4654321
Bob	West Side	4654254
Doug	East Side	4651823
Bill	North Side	4652252
Cary	East Side	4651855
Paul	South Side	4653552
Kim	North Side	4652183
James	South Side	4653122
Beth	East Side	4651931

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Contents HTX-242 TWO-METER Mobile Trans Ceiver Introduction FeaturesUsing this Manual Contents Using Dtmf and Subaudible Tones Using Memory ChannelsUsing the Menu Troubleshooting Specifications SchematicsInstallation Connecting the MicrophoneUnpacking the Transceiver Mounting the HTX-242 in a Vehicle Connecting an Antenna Connecting to your Vehicle’s Power Using the HTX-242 as a Base Station Connecting an External Speaker Optional Using the HTX-242 with Packet RadioDtmf Touch-Tone Features Understanding the HTX-242Dual VFO Modes Subaudible Tone Ctcss Features Repeater OperationMemory Channels VFO-A-T Understanding the DisplayPage Basic Operation Resetting the HTX-242Turning On/Off Your HTX-242 Extending the Transmit Frequency RangeUsing the Light Setting Volume and SquelchSetting the Power Level Locking the ControlsTuning to a Frequency Selecting a FrequencyDirectly Entering a Frequency Scanning for a Frequency Setting the Frequency StepSetting the Scan Options Setting the Scan Resume ConditionStoring Scan Skip Frequencies Setting the Scanning Range Setting the Scan Resume DelayTransmitting Receiving TransmissionsTransmitting Dtmf Tones from Memory Manually Transmitting Dtmf TonesLimiting Transmit Duration Turning the Keytone Beep On and OffAdvanced Operation Frequency Offset DefaultsTurning Auto Duplex On and Off Receive Frequency Transmit OffsetChanging the Default Offset Reversing the OffsetOverriding the Duplex Offset Using the Dual VFOs for Duplex Operation Using Memory Channels Changing Stored SettingsStoring a Frequency Using Auto Memory Store AMS Tuning to a Standard Memory Channel Using the Calling-Frequency MemoryChecking Priority Channel Scanning Memory Channels Clearing a Memory ChannelEnabling/Disabling Scanning for Memory Channels Using Dtmf and Subaudible Tones Storing a Dtmf SequenceTransmitting a Dtmf Sequence Using Dtmf Using Group CallingName Assignment Dtmf Page Sequence Using Auto-Reply Using Dtmf Auto Send Setting the Subaudible Tones Using Subaudible TonesValid Subaudible Tones Code Freq. HzActivating Subaudible Tone Transmit and Squelch Setting the Dtmf Page and Subaudible Tone AlertUsing the Menu OFF Menu Default Explanation/Available Settings OptionError Codes TroubleshootingCommon Problems and Solutions Problem Possible SolutionsReplacing the Fuse Specifications GeneralReceiver Transmitter Schematics RF Schematic Digital Schematic Microphone Schematic Radio Shack Division of Tandy Corporation Fort Worth, Texas