Radio Shack HTX-242 owner manual Contents

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CONTENTS

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Unpacking the Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . 6 Connecting the Microphone . . . . . . . . . . . . . . . . . . . . . . . . . 6 Mounting the HTX-242 in a Vehicle . . . . . . . . . . . . . . . . . . . 7 Connecting an Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Connecting to your Vehicle’s Power . . . . . . . . . . . . . . . . . . . 9 Using the HTX-242 as a Base Station . . . . . . . . . . . . . . . . 10 Using the HTX-242 with Packet Radio . . . . . . . . . . . . . . . . 11 Connecting an External Speaker (Optional) . . . . . . . . . . . . 11

Understanding the HTX-242 . . . . . . . . . . . . . . . . . . . . . . . 12

Dual VFO Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

DTMF (Touch-Tone) Features . . . . . . . . . . . . . . . . . . . . . . 12

Subaudible Tone (CTCSS) Features . . . . . . . . . . . . . . . . . . 13

Repeater Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Memory Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Understanding the Display . . . . . . . . . . . . . . . . . . . . . . . . 14

Basic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Turning On/Off Your HTX-242 . . . . . . . . . . . . . . . . . . . . . 16 Resetting the HTX-242 . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Extending the Transmit Frequency Range . . . . . . . . . . . . . 16 Setting Volume and Squelch . . . . . . . . . . . . . . . . . . . . . . . 17 Using the Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Setting the Power Level . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Locking the Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Selecting a Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Directly Entering a Frequency . . . . . . . . . . . . . . . . . . . 18 Tuning to a Frequency . . . . . . . . . . . . . . . . . . . . . . . . 18 Scanning for a Frequency . . . . . . . . . . . . . . . . . . . . . . 19 Setting the Frequency Step . . . . . . . . . . . . . . . . . . . . . . . . 19 Setting the Scan Options . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Storing Scan Skip Frequencies . . . . . . . . . . . . . . . . . . 20 Setting the Scan Resume Condition . . . . . . . . . . . . . . 20 Setting the Scan Resume Delay . . . . . . . . . . . . . . . . . . 21 Setting the Scanning Range . . . . . . . . . . . . . . . . . . . . 21 Receiving Transmissions . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Transmitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Manually Transmitting DTMF Tones . . . . . . . . . . . . . . 23 Transmitting DTMF Tones from Memory . . . . . . . . . . . 23 Limiting Transmit Duration . . . . . . . . . . . . . . . . . . . . 24 Turning the Keytone Beep On and Off . . . . . . . . . . . . . . . . 24

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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 SchematicsConnecting the Microphone InstallationUnpacking 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 Using the HTX-242 with Packet Radio Connecting an External Speaker OptionalUnderstanding the HTX-242 Dtmf Touch-Tone FeaturesDual VFO Modes Repeater Operation Subaudible Tone Ctcss FeaturesMemory Channels 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 ControlsSelecting a Frequency Tuning to a FrequencyDirectly Entering a Frequency Setting the Frequency Step Scanning for a FrequencySetting the Scan Resume Condition Setting the Scan OptionsStoring Scan Skip Frequencies 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 OffsetReversing the Offset Changing the Default OffsetOverriding the Duplex Offset Using the Dual VFOs for Duplex Operation Changing Stored Settings Using Memory ChannelsStoring a Frequency Using Auto Memory Store AMS Using the Calling-Frequency Memory Tuning to a Standard Memory ChannelChecking Priority Channel Clearing a Memory Channel Scanning Memory ChannelsEnabling/Disabling Scanning for Memory Channels Storing a Dtmf Sequence Using Dtmf and Subaudible TonesTransmitting a Dtmf Sequence Using Group Calling Using DtmfName Assignment Dtmf Page Sequence 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 General SpecificationsReceiver Transmitter Schematics RF Schematic Digital Schematic Microphone Schematic Radio Shack Division of Tandy Corporation Fort Worth, Texas
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