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Radio Shack HTX-242 owner manual Using the Dual VFOs for Duplex Operation

Models: HTX-242

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Using the Dual VFOs for Duplex Operation

Follow these steps to use one VFO to transmit and the other to receive.

1.Press VFO to select VFO-A.

2.Select a frequency.

3.Press VFO to select VFO-B.

4.Select a frequency.

5.Press DUP.

When the HTX-242 displays:

VFO-A-T VFO-B

it transmits on the VFO-A frequency and receives on the VFO-B frequency.

When it displays:

VFO-A VFO-B-T

it transmits on the VFO-B frequency and receives on the VFO-A frequency.

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Radio Shack HTX-242 owner manual Using the Dual VFOs for Duplex Operation

Contents

HTX-242 TWO-METER Mobile Trans Ceiver Introduction FeaturesUsing this Manual Contents Specifications Schematics Using Memory ChannelsUsing Dtmf and Subaudible Tones Using the Menu TroubleshootingInstallation 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 Extending the Transmit Frequency Range Resetting the HTX-242Basic Operation Turning On/Off Your HTX-242Locking the Controls Setting Volume and SquelchUsing the Light Setting the Power LevelTuning 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 OffReceive Frequency Transmit Offset Frequency Offset DefaultsAdvanced Operation Turning Auto Duplex On and OffChanging 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 Code Freq. Hz Using Subaudible TonesSetting the Subaudible Tones Valid Subaudible TonesActivating Subaudible Tone Transmit and Squelch Setting the Dtmf Page and Subaudible Tone AlertUsing the Menu OFF Menu Default Explanation/Available Settings OptionProblem Possible Solutions TroubleshootingError Codes Common Problems and SolutionsReplacing the Fuse Specifications GeneralReceiver Transmitter Schematics RF Schematic Digital Schematic Microphone Schematic Radio Shack Division of Tandy Corporation Fort Worth, Texas