Radio Shack HTX-242 owner manual Digital Schematic

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DIGITAL SCHEMATIC

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Contents HTX-242 TWO-METER Mobile Trans Ceiver Features IntroductionUsing this Manual Contents Using the Menu Troubleshooting Using Memory ChannelsUsing Dtmf and Subaudible Tones 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 Turning On/Off Your HTX-242 Resetting the HTX-242Basic Operation Extending the Transmit Frequency RangeSetting the Power Level Setting Volume and SquelchUsing the Light 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 DurationTurning Auto Duplex On and Off Frequency Offset DefaultsAdvanced Operation 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 Valid Subaudible Tones Using Subaudible TonesSetting the 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 OFFCommon Problems and Solutions TroubleshootingError Codes Problem Possible SolutionsReplacing the Fuse General SpecificationsReceiver Transmitter Schematics RF Schematic Digital Schematic Microphone Schematic Radio Shack Division of Tandy Corporation Fort Worth, Texas