UH-042XR Operating Guide
WARNING! ➤ Do not operate the transmitter of any radio equipment unless all the Radio Frequency (RF) connectors are secured and any open connectors are properly terminated. ➤ Do not operate the transmitter of any radio equipment near electrical blasting caps or in an explosive atmosphere. ➤ Do not let children operate any transmitter-equipped radio equipment unless supervised. ➤ Have your radio equipment serviced by a qualified Uniden technician.
CONTENTS Introduction Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Technical Support & Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Included in your UH-042XR Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Getting Started Battery Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Low Battery Alert. . . . . . . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION The UH-042XR is a portable two-way UHF-CB radio. It is compact, rugged and fits easily in your hand. This hand held UHF radio will give you consistent, outstanding performance in virtually all conditions and situations. To ensure that you get the most from the UH-042XR’s features, please read this operating guide carefully before using the unit.
TECHNICAL SUPPORT AND SERVICE Should you find it desirable or necessary to service your UH-042XR, we suggest you contact the Uniden dealer where you purchased your radio. Your dealer will be able to assist you with the complete service information. If you require service that is within the terms of your warranty, you should present a copy of your receipt to your dealer to authenticate your claim.
INCLUDED IN YOUR UH-042XR PACKAGE UH-042XR Note: Wrist Strap Belt Clip Operating Guide Product Registration Card and other printed materials If any of these items are missing from the box, contact your Uniden Dealer.
GETTING STARTED BATTERY INSTALLATION Your UH042XR radio uses 3 AA ALKALINE batteries for power. Please refer to page 18 should you wish to use rechargeable batteries. To install the batteries: Do not mix old and new batteries to avoid damage to the unit. 1. Make sure your radio is off. 2. Release the battery cover clip, then remove the battery cover. 3. Insert 3 AA ALKALINE batteries according to the polarity symbols inside the battery compartment. Tab holes 4.
LOW BATTERY ALERT The LCD on your radio shows a battery meter in the lower right corner. icon indicates a fully powered unit. As the batteries lose power, will flash. When the batteries in the unit are low, the unit will go into a Battery Low/Sleep Mode. The Scan Mode, Transmit, Transmit Call Tone Mode are disabled. Replace the batteries immediately to continue using the radio.
OPERATION ➤ When you press any key (except PTT), a short tone sounds. ➤ See the Controls and Indicators page at the back of this operating guide for button and key operations. POWER ON/OFF To turn the unit ON, rotate the [ON/OFF VOL] clockwise until a “click” is heard. A channel number and battery level should appear on the display. To turn the unit OFF, rotate the [ON/OFF VOL] knob counter-clockwise until a “click” is heard. The display will disappear. VOLUME 1.
SELECTING A CHANNEL Press [▲] or [▼] to select the desired channel. Note: If you press and hold the [▲] or [▼], channel numbers will scroll rapidly. scan dup vox mem bcl TO TRANSMIT AND RECEIVE os/gs ctcss The UH-042XR uses the 40 UHF-CB Channels. For your reference a list of the available channels and corresponding frequencies is printed at the end of this manual. 1. The maximum RF transmit power of UH-042XR is 500 mWatts. 2. Before you transmit, listen for activity on the selected channel. 3.
TO OPERATE IN DUPLEX MODE Eg. CH01 is being used in your area for repeater purpose. scan dup mem bcl vox os/gs ctcss Press [DUP] momentarily. The DUP icon appears. Press [DUP] again to deactivate the duplex operation. UH-042XR will return to simplex operation. DUP icon disappears. SCANNING The UH-042XR has two types of scanning; Open Scanning (OS) and Group Scanning (GS), giving you flexibility and allowing you to use the radio more effectively.
Example: CH40 becomes active If the received signal ceases, the unit will wait for at least 3 seconds for the signal to return, otherwise scanning resumes. To skip the active channel, press [MEM] momentarily. Scanning resumes. To deactivate SCAN, press the [SCAN] or [PTT]. Note: 1. If SCAN is deactivated while in an active channel, the UH-042XR will stay on that active channel. If no other channels are active, the UH-042XR will reinstate the starting channel. 2.
PRIORITY CHANNEL The Priority Channel feature allows user to monitor one of 40 channels in the UH-042XR, monitoring it every 1.5secs during Group Scanning. Choosing a Priority Channel The starting channel, when Group Scanning is initiated, is always the Priority Channel. To change the priority channel setting while scanning, (eg. PRI Channel is CH17 (476.825 MHz)) a. press [▲], to select a higher channel (scanning pauses) or b. press [▼], to select a lower channel Programming Scan Channels 1.
CONTINUOUS TONE CODED SQUELCH SYSTEM (CTCSS) CTCSS is a feature that allows a group to talk to each other without hearing other users on the same channel. NOTE : Uniden discourages the use of CTCSS feature until the Australian Communications Authority (ACA) grants the use of CTCSS on CB frequencies. Programming CTCSS Code 1. Select a desired channel to be used with CTCSS. 2. Press and hold [CTCSS] for 1.5 secs. CTCSS code indicator blinks. 3. Press [▲] or [▼] to select the desired CTCSS code. 4.
CTCSS Scan Operation 1. Press [SCAN] to start scanning (GS or OS) mode. 2. During scanning if a signal is sensed on a CTCSS CH, the UH-042XR stops for about 400msecs (decode time) to decode the CTCSS code. If there is no code or the receive code does not match the one programmed on the unit, the unit resumes scanning. On the example below only radio 1 and 9 can communicate or hear each other because they are using the same or common CTCSS code.
BUILT-IN VOICE ACTIVATED CIRCUIT (VOX) VOX feature enables user to transmit automatically by speaking on the microphone of the VOX headset (not supplied) without pressing the PTT switch. NOTE: VOX feature will not work without the Headset Microphone. Built in [PTT] of UH-042XR is temporarily disabled, however accidental pressing of [PTT] will cause the unit to transmit briefly. To activate VOX 1. Turn the UH-042XR OFF. 2. Press and hold [VOX] while turning the radio ON.
To De-activate VOX 1. Turn OFF UH-042XR. 2. Remove VOX Headset from UH-042XR. 3. Press and hold [VOX] while turning the radio ON. “VOX” icon disappears. 4. UH-042XR returns to PTT operation. Note: Turning ON the radio without removing the VOX headset will cause the unit to transmit continuously. DROP-OUT DELAY While scanning, the UH-042XR stops at a busy channel and receives a transmission.
BUSY CHANNEL LOCK-OUT(BCL) This feature prevents accidental transmission on a busy channel. This is recommended on channels where CTCSS is being used. If the channel is “active” and the signal is coming from a non or different CTCSS code user the BCL feature will prevent you from transmitting. To activate BCL Press and hold [BCL] for 1.5 secs until “BCL” appears on display. scan dup mem To De-activate BCL bcl vox os/gs ctcss Press and hold [BCL] for 1.5 secs. until “BCL” disappears from the display.
BACK LIGHT The Liquid Crystal Display (LCD) is backlit for easy viewing at night or in low light situations. The back lighting automatically switches ON every time a key (except PTT) is pressed. It turns OFF 5secs after the last key is pressed. KEYPAD LOCK To prevent accidental entries, you can lock the keypad. Press and hold the [LOCK] button for 1.5 secs. until it beeps to activate Key Lock. icon appears. To unlock the keypad, press and hold the [LOCK] button again for 1.5 secs. icon disappears.
BATTERY LEVEL DISPLAY The icon in the bottom right hand corner of the screen indicates the UH042XR current battery voltage level at all times.
CHARGING BATTERIES Warning Notice! Use only the AAD042S optional power adaptor if rechargeable batteries will be used in the UH042XR. • Turn the UH042XR [ON/OFF VOL] knob off and connect the AC adaptor plug to the mic jack. • Battery charging times vary. A longer time is required to charge higher capacity batteries. Rechargeable Batteries 600mAH Ni-Cad 1000mAH Ni-Cad 1300mAH Ni-MH Charging Time 14-16 hrs 24-27 hrs 31-35 hrs • Disconnect the AC adaptor from the unit when charging is completed.
UHF CHANNELS & FREQUENCIES Ch. Freq. Usage Ch. Freq. Usage 01 02 476.425 Simplex/Duplex 21 476.925 Simplex 476.450 Simplex/Duplex 22 476.950 Simplex 03 476.475 Simplex/Duplex 23 476.975 Simplex 04 476.500 Simplex/Duplex 24 477.000 Simplex 05 *476. 525 Simplex/Duplex 25 477.025 Simplex 06 476.550 Simplex/Duplex 26 477.050 Simplex 07 476.575 Simplex/Duplex 27 477.075 Simplex 08 476.600 Simplex/Duplex 28 477.100 Simplex 09 476.625 Repeater 29 477.
CTCSS CODES & FREQUENCIES Code No. Freq. (Hz) Code No. Freq. (Hz) Code No. Freq. (Hz) 00(‘oF’) OFF 13 103.5 26 162.2 01 67.0 14 107.2 27 167.9 02 71.9 15 110.9 28 173.8 03 74.4 16 114.8 29 179.9 04 77.0 17 118.8 30 186.2 05 79.7 18 123.0 31 192.8 06 82.5 19 127.3 32 203.5 07 85.4 20 131.8 33 210.7 08 88.5 21 136.5 34 218.1 09 91.5 22 141.3 35 225.7 10 94.8 23 146.2 36 233.6 11 97.4 24 151.4 37 241.8 12 100.0 25 156.7 38 250.
Display Speaker Power Source Size Weight Operating Time at Duty Cycle 5 Secs. Tx, 5 Secs. Rx, 90 Secs. Standby Liquid Crystal Display 36mm Round, 8Ω AA Size Battery x 3pcs (with antenna) 180(H) x 62(W) x 32(D)mm 150g (with Antenna & without Battery) 17 hrs (1.2V, 600mAH Ni-Cd Batteries) 25 hrs (1.2V, 1000mAH Ni-Cd Batteries) 32 hrs (1.25V, 1300mAH Ni-MH Batteries) 38 hrs (1.
WARRANTY UNIDEN UH-042XR UHF CB RADIO Limited One Year Warranty Note: Please keep your sales docket as it provides evidence of warranty. Uniden Australia Pty Limited ACN 001 865 498 Uniden New Zealand Limited Elements of Warranty: Uniden warrants to the original retail owner for the duration of this warranty, its UH-042XR UHF CB Transceiver Radio (hereinafter referred to as the Product) to be free from defects in materials and craftsmanship with only the limitations or exclusions set out below.
CONTROLS & INDICATORS 1 13 2 3 4 14 5 15 scan dup 6 9 vox mem os/gs 7 bcl 10 ctcss 11 12 8 23
A B J I H K F G L C D E A. B. C. D. E. F. Transmit Channel Numbers Key Lock Memory Battery Level Indicator Duplex Transmit G. H. I. J. K. L. 1. 2. 3. 4. 5. 6. 7. 8. 9. Speaker Jack Microphone Jack On/Off Volume LCD Display Up Button Down Button Microphone Speaker Scan and VOX Button 10. Open/Group Scan and CTCSS Button 11. Memory/BCL Button 12. Duplex and Key Lock On/Off Button 13. PTT (Push-to-talk) Button 14. Monitor Switch 15.
© 2000 Uniden Australia Pty Limited/Uniden New Zealand Limited UTZZ01877ZZ
