Radio Shack Comprehensive Guide to HTX-242 Operations and Settings

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Changing the Default Offset

Follow these steps to change the default offset for the VFO modes.

1.Press VFO.

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

3.Press SHIFT. The HTX-242 displays oS and the current offset (in MHz).

4.Rotate TUNE, press UP or DOWN on the microphone, or directly enter the step using the microphone’s keypad to select an offset default (from 0 to 38 MHz).

5.Press SHIFT or PTT to save the setting.

!Note: This setting does not affect frequencies already stored in memory.

Reversing the Offset

To reverse the transmit and receive frequencies when you operate duplex, press F then REV. For example, if you tune to 146.940 (which has a – offset), pressing F then REV makes the transceiver receive on 146.340 and transmit on 146.940. The setting returns to the default if you change frequencies.

Overriding the Duplex Offset

When you tune to a frequency, the HTX-242 automatically selects either simplex operation, or duplex operation with the correct off- set direction (if the auto duplex option is on). To override this set- ting, press SHIFT. Each time you press SHIFT, the offset switches between +, –, and no offset. The setting returns to the default if you change frequencies.

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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 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 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 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 Transmitting Manually 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 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 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 Receiver SpecificationsGeneral Transmitter Schematics RF Schematic Digital Schematic Microphone Schematic Radio Shack Division of Tandy Corporation Fort Worth, Texas