Radio Shack HTX-242 owner manual Using Dtmf and Subaudible Tones, Storing a Dtmf Sequence

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USING DTMF AND SUBAUDIBLE TONES

Your HTX-242 has 10 DTMF (Dual-Tone, Multiple Frequency— another name for touch tones) memories where you can store DTMF sequences. DTMF Memory 0 can hold a 7-digit DTMF paging sequence your HTX-242 must receive for DTMF paging. DTMF Memories 1-10 each hold 15 digits you can quickly transmit.

Storing a DTMF Sequence

1.Hold down F for at least 1 second. FUNC flashes.

2.Press DTMF. The HTX-242 displays the sequence stored in the currently selected memory.

3.Rotate TUNE, or press UP or DOWN on the microphone, to select one of the 10 transmit DTMF memories (1–10) or the receive DTMF memory (0).

Note: td appears with transmit DTMF Memories 1-10, and rd appears with receive DTMF Memory 0.

4.Press SHIFT. Then use the keypad to enter the sequence you want to store.

Note: DTMF Memories 1–10 hold 15 digits each. DTMF Memory 0 holds 7 digits.

5.Repeat Steps 3 and 4 to store more DTMF sequences, or press DTMF or PTT to save all sequences and return to nor- mal operation.

!Note: To clear a DTMF sequence, repeat these steps but do not enter a frequency in Step 4 after you press SHIFT.

Transmitting a DTMF Sequence

1.Hold F for at least 1 second. FUNC flashes.

2.Rotate TUNE, or press UP or DOWN on the microphone, to select the DTMF memory that contains the sequence you want to transmit.

3.Press the push-to-talk button. While holding down PTT, press DTMF. The HTX-242 transmits the stored sequence.

!Note: If the DTMF auto send feature is turned on, the HTX-242 transmits the tones in the selected DTMF memory every time you press PTT.

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Contents HTX-242 TWO-METER Mobile Trans Ceiver Features IntroductionUsing this Manual Contents Using Memory Channels Using Dtmf and Subaudible TonesUsing the Menu Troubleshooting Specifications SchematicsUnpacking the Transceiver InstallationConnecting the Microphone Mounting the HTX-242 in a Vehicle Connecting an Antenna Connecting to your Vehicle’s Power Using the HTX-242 as a Base Station Using the HTX-242 with Packet Radio Connecting an External Speaker OptionalDual VFO Modes Dtmf Touch-Tone FeaturesUnderstanding the HTX-242 Memory Channels Subaudible Tone Ctcss FeaturesRepeater Operation Understanding the Display VFO-A-TPage Resetting the HTX-242 Basic OperationTurning On/Off Your HTX-242 Extending the Transmit Frequency RangeSetting Volume and Squelch Using the LightSetting the Power Level Locking the ControlsDirectly Entering a Frequency Tuning to a FrequencySelecting a Frequency Setting the Frequency Step Scanning for a FrequencyStoring Scan Skip Frequencies Setting the Scan OptionsSetting the Scan Resume Condition Setting the Scan Resume Delay Setting the Scanning RangeReceiving Transmissions TransmittingManually Transmitting Dtmf Tones Transmitting Dtmf Tones from MemoryTurning the Keytone Beep On and Off Limiting Transmit DurationFrequency Offset Defaults Advanced OperationTurning Auto Duplex On and Off Receive Frequency Transmit OffsetOverriding the Duplex Offset Changing the Default OffsetReversing the Offset Using the Dual VFOs for Duplex Operation Storing a Frequency Using Memory ChannelsChanging Stored Settings Using Auto Memory Store AMS Checking Priority Channel Tuning to a Standard Memory ChannelUsing the Calling-Frequency Memory Enabling/Disabling Scanning for Memory Channels Scanning Memory ChannelsClearing a Memory Channel Transmitting a Dtmf Sequence Using Dtmf and Subaudible TonesStoring a Dtmf Sequence Name Assignment Dtmf Page Sequence Using DtmfUsing Group Calling Using Auto-Reply Using Dtmf Auto Send Using Subaudible Tones Setting the Subaudible TonesValid Subaudible Tones Code Freq. HzSetting the Dtmf Page and Subaudible Tone Alert Activating Subaudible Tone Transmit and SquelchUsing the Menu Menu Default Explanation/Available Settings Option OFFTroubleshooting Error CodesCommon Problems and Solutions Problem Possible SolutionsReplacing the Fuse Receiver SpecificationsGeneral Transmitter Schematics RF Schematic Digital Schematic Microphone Schematic Radio Shack Division of Tandy Corporation Fort Worth, Texas