Equipment information

Radio Shack Division HTX-242 Transceiver
Manufacturer:
Model:
HTX-242
Date:
1995
Category:
Group:
Description:
TWO-METER MOBILE TRANSCEIVER

Information

Your HTX-242 Two-Meter Mobile Transceiver is an exciting addition to Radio Shack’s growing line of high-quality amateur radio equipment. It offers some of the most advanced, and most requested, features available in a mobile Transceiver. Be sure to read this entire manual to understand how to use all the radio’s features. FEATURES 2 Auto Memory Store (AMS)—automatically searches for active frequencies and stores them in memory, including the appropriate Repeater offset. High (45 Watt) and Low (10 Watt) Power Settings—let you select the best power setting for effective communications. True FM Modulation—provides a clear, natural-sounding signal. 41 Memory Channels—hold one calling frequency and 40 standard frequencies. Priority Memory Channel 1—lets you set the HTX-242 to periodically check the frequency stored in Memory Channel 1 and alert you if there is activity on it. Individually Programmable Repeater Offsets —let you program different Repeater offset frequencies for each memory, and a default Repeater offset for manually-tuned frequencies. Subaudible Tone Transmit and Receive (CTCSS) —transmits the subaudible tones required to use some repeaters, and also lets you set a subaudible tone that your Transceiver must receive to open squelch. DTMF Page with Group Calling—lets you set a sequence of up to seven DTMF tones that your Transceiver must receive to sound an alert tone and open squelch. DTMF Transmit and Memory —lets you manually send DTMF tones or send DTMF sequences of up to 15 digits each from one of 10 DTMF memories to quickly access DTMF-access repeaters, autopatches, or other stations equipped with a DTMF page feature.

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User Manual
Manual Type:
User Manual
Pages:
48
Size:
116.21 Kbytes (118995 Bytes)
Language:
english
Revision:
Manual-ID:
19-1126
Date:
01 January 1996
Quality:
Electronic document, no scan, very well readable.
Upload date:
18 April 2017
MD5:
0f1a42749a2f9f2ccc818f5ae866c0b4
Downloads:
257

Information

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 Advanced Operation ... . ... . 25 Frequency Offset Defaults ... . ... . 25 Turning Auto Duplex On and Off ... . 25 Changing the Default Offset ... . 26 Reversing the Offset ... . ... . 26 Overriding the Duplex Offset ... . 26 Using the Dual VFOs for Duplex Operation ... . 27 Using Memory Channels ... . ... . 28 Storing a Frequency ... . ... . 28 Changing Stored Settings ... . ... . 28 Using Auto Memory Store (AMS) ... . ... . 29 Tuning to a Standard Memory Channel ... . . . . 30 Using the Calling-Frequency Memory ... . . . . 30 Checking Priority Channel 1 ... . ... . 30 Scanning Memory Channels ... . ... . 31 Clearing a Memory Channel ... . ... . 31 Enabling/Disabling Scanning for Memory Channels ... . 31 Using DTMF and Subaudible Tones ... . 32 Storing a DTMF Sequence ... . ... . 32 Transmitting a DTMF Sequence ... . 32 Using DTMF Page ... . ... . 33 Using Group Calling ... . ... . 33 Using Auto-Reply ... . ... . 34 Using DTMF Auto Send ... . ... . 35 Using Subaudible Tones ... . ... . 36 Valid Subaudible Tones ... . 36 Setting the Subaudible Tones ... . . . . 36 Activating Subaudible Tone Transmit and Squelch . . . 37 Setting the DTMF Page and Subaudible Tone Alert ... . 37 Using the Menu ... . ... 38 Troubleshooting ... . ... . 40 Error Codes ... . ... . ... . 40 Replacing the Fuse ... . ... . 41 Specifications ... . ... 42 Schematics ... . ... 44

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Service Manual
Manual Type:
Service Manual
Pages:
72
Size:
41.19 Mbytes (43191499 Bytes)
Language:
english
Revision:
Manual-ID:
19-1126
Date:
01 January 1995
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
18 April 2017
MD5:
97dc779d09d4e2cfe9eaf4434dd4885c
Downloads:
384

Information

Specifications ... 2 Block Diagrams ... 5 Disassembly Instructions ... 6 Theory of Operation ... 7 Alignment and Adjustment ... 12 Troubleshooting ... 17 Error Display ... 18 Printed Circuit Board ... 19 Wiring Diagram ... 24 Exploded View ... 25 Exploded View Parts List ... 26 Electrical Parts List ... 28 Semiconductor Lead Identification and IC Internal Diagram ... 46 Semiconductor Voltage Chart ... 57 Schematic Diagram ... 63

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