LiJiANi Rd239 Air Radio User Manual

LiJiANi Rd239 Air Radio

Product Information

Specifications

• Dimensions: 136.00 mm x 82.00 mm
• Model: Rd239 AIR/VHF/FM/AM/SW/WB Word band Radio
• User Manual Version: V2.9

Introduction to the Product
The Rd239 AIR/VHF/FM/AM/SW/WB Word band Radio is a versatile portable radio that allows you to listen to various radio bands including AIR, VHF, FM, AM, SW, and WB. It also features a flashlight, display power screen, microphone, tuning controls, and a speaker. The radio can be powered using a BL-5C battery or 3 AA batteries.

Product Usage Instructions

Powering On the Radio
To power on the radio, press the power button located in the button area of the device.

Listening to Radio Programs
To listen to radio programs, follow these steps:

1. Make sure the radio is powered on.
2. Select the desired radio band (AIR, VHF, FM, AM, SW, or WB) using the band button.
3. Use the tuning controls to search for and select a specific radio frequency within the chosen band.
4. Adjust the volume using the volume controls.

Setting the Radio

Setting Stereo Mode
Under the FM band, if you insert headphones, the radio will enter stereo mode. To turn off or on stereo mode, press the SET key.

Setting Bandwidth
In the FM/VHF band, you can set the bandwidth to optimize the reception quality. Follow these steps:

1. Long press the SET key for 2 seconds to start setting the bandwidth.
2. Press the SET key to choose between 5, 50, 150, or 200KHZ.
3. Press and hold the SET key for 3 seconds to exit the setting mode.

Setting Squelch (SQ)
In the AIR band, you can adjust the squelch to prevent output noise. Follow these steps:

1. Long press the SET key for 2 seconds in the AIR band.
2. The ON or OFF symbol will appear.
3. Press the SET key again to select ON or OFF for the SQ function.
4. The setting will automatically take effect after 3 seconds.

Setting Keyboard Backlight Time
You can adjust the keyboard backlight time. Before turning on the radio (when the clock is displayed), follow these steps:

1. Long press the SET key until “BL” followed by a number appears.
2. Press the SET key again to choose between 5 seconds, 10 seconds, 15 seconds, or 20 seconds as the backlight time.

Setting Time & Alarm
To set the time and alarm, enter the MODE and use the appropriate keys to adjust the settings.

Recording
The radio allows you to record audio. Use the LOOP key to select the desired recording mode: All Loop, Single Loop, or Random Play.

Use Region Setting
Depending on your location, you may need to set the radio to the local frequency. Follow these steps:

1. Make sure the radio is in the clock state (before power on).
2. Long press the BAND key.
3. The display will show numbers (e.g., 64, 76, 87, or 87.5).
4. Press the up and down keys to select the appropriate frequency for your country or region.
5. The setting will automatically be saved and exit after three seconds.

FAQ

Q: Where can I download the latest manual?
A: You can download the latest manual online or contact customer service at ZL393688798@Foxmail.com for assistance.

The software is still being optimized. Please download the latest manual online or contact customer service at ZL393688798@Foxmail.com.

Introduction the Product

Load the Battery

*This machine uses 3AA batteries or BL-5C lithium batteries:**

1. When using AA batteries, please use alkaline 1.5V batteries, please do not use 1.2V rechargeable batteries, this machine at 3.3V (1.1V three batteries), the circuit will not work properly. So use a 1.2V rechargeable battery, the power symbol can only show 2 cells of electricity, and soon after it drops to 1.1V, the radio will not work properly.
2. When using a BL-5C battery, please pay attention to the direction, if the battery is loose, please pad a piece of paper, foam, double-sided tape, etc. at the back. Different manufacturers of batteries, the size of deviation, the size of the large will not fit, the size of the small, will shake, shake too big will be easy to power off. Please pay attention to the use.
3. This device has a memory function, which can save the search and saved stations, favorite stations, last listened to radio programs, etc. in the memory. However, when the battery is taken out, the memory will be lost after 3 seconds, so when we change the battery, try to do it within 3 seconds.
4. please use a DC 5V device to charge this machine, avoid using a cell phone fast charging device, it is a 9V and 12V charger. After charging is finished, please disconnect the charging cable in time, overcharging will reduce the battery life.
5. when you need to play songs at high volume, please use a BL-5c lithium battery, avoid using AA batteries, AA batteries generally have a large internal resistance, small power supply current, can not provide the required high power, and may lead to early shutdown, sound lag, screen flicker, AA batteries are a backup emergency solution, please turn down the volume when using AA batteries.

Special Note
Please use LI-ion battery (BL-5C) first, AA battery can also be used, but AA battery should be used as an emergency backup plan. When using AA batteries, please turn down the volume or use headphones. In order to avoid, early shutdown, screen bright and dark flicker, sound lag, power drop fast, and other problems. because the AA battery power is small, it can not provide the high current required for loud volume. Turn down the volume will be normal.

Warning
Please do not use inferior batteries, the power of this machine is high, and the maximum output power of the speaker is 3W. It requires a higher current power supply. When the inferior battery cannot provide the required power, the radio will shut down prematurely, the screen will flicker, the sound will freeze, etc. When there is only one cell left in the battery, or when using a low-quality battery, if the sound is turned up to the maximum, it will shut down in advance. If you reinsert the battery, you will find that the battery still has 1 bar of power or even 2 bars of power. In this case, the quality of the battery is not good enough, and the voltage shows that there is still power, but the battery cannot discharge a large current for the radio. Please turn down the volume or use headphones. It can still be used for a while. This is a great way to save electricity.

Power on radio

Turn on the radio:

1. Press the POWER key twice, once to show the clock (wake it up from hibernation), and press it again to turn on the radio.
2. Sleep countdown – power on
   In the clock state, Long press the POWER key for 2 seconds to start the sound sleep function, and the sleep symbol flashes on the screen and displays 90 (90 minutes), press the POWER key again to display 80, 70…10 in sequence, select the time we want, wait for two seconds, the radio will automatically turn on, the screen shows the hibernation symbol after the sleep time countdown is complete, the radio will automatically shut down.

Turn off the radio:
In the power-on state, press the POWER key for 2 seconds. At this time, the screen displays the clock, indicating that the power has been turned off, 10 seconds later, the clock display goes off and enters the hibernation state, the clock is still running.

Listen to radio programs

Simple operation:
After powering on, press the BAND key to select different bands(FM-VHF-AM-SW- AIR-WB), then long press the SCAN key for 2 seconds, to search for stations auto. The searched radio stations are stored in the memory in order of CH01, CH02…..Save up to 99 stations. Then press ∧ or ∨ key to select the previous station or next station, and scroll the TUNING knob to search for stations manually. Press V+ or V- to adjust the sound level. Press MODE to enter TF card playback, and press MODE again to enter Bluetooth playback.

• Lock key:
  Press the LOCK key, the symbol on the screen is flashing, indicating that the TUNING knob is locked, press the LOCK key again, and the symbol disappears.
  long press for 2 seconds, the lock key symbol is always on, indicating that all operations are locked. Long press the LOCK key again, and the symbol on the screen disappears, indicating that the key is unlocked.

• SCAN key:

  • In RADIO mode: Press the SCAN key for 2 seconds to start scan the radio automatically and save it. can short press to pause the radio station.
  • In MODE mode: Press the SCAN key to pause playback or start playback.

• CH key:
  Press the CH key, the screen displays CH , enter a number, such as “5”, (1-digit or 2-digit), then press the ENTER key to confirm. The station at position CH 05 starts playing. If there is no station saved in CH 05 position, CH- – will be displayed.

• FREQ key.
  Press the FREQ key to display – – –, then enter the frequency, such as 9050, then press the ENTER key to confirm and start playing 90.50 MHZ.

• QUICK PRESET function:
  There are 9 QUICK PRESET keys, when playing a radio station (e.g. 90.5mhz), Long press the number key “5” for 2 seconds, and the screen will show L5, which means 90.5MHZ is saved on “5”. You can overwrite 90.5MHZ with a new frequency by long pressing the number key “5”. when we need to listen to it, directly press the “5” key.

• PRESET mode:
  Press the MEMORY key to enter the PRESET mode, and it will exit automatically after 10 seconds if there is no operation. In PRESET mode, the TUNING knob will only advance through the saved stations. And, only in the PRESET mode we can delete the station (long press the DEL key to delete the saved station). We can also press the MEMORY key again to exit the PRESET mode.

• Station rotation function.
  In PRESET mode Long press the SCAN key to start the rotation of the saved radio stations, and the loop symbol will start flashing, Each station will play for 5 seconds, and then the next station will be played. Press the SCAN key again and exit the turn-by-turn function.

• To save a station manually:
  Long Press the MEMORY key to start saving the station, then the PRESET symbol flashes, select the save location (Input by up and down keys or scroll wheel), press MEMORY again, and the station is saved.

• To delete a radio station:
  We must first press the MEMORY key to enter PRESET mode and find the radio station to be deleted. Then press and hold the DEL key to hear a “drop” and the station currently playing is deleted.

• STEP key.
  The STEP key is used in conjunction with the TUNING key. Scroll the TUNING wheel, and the number on the far right side of the screen will start to change and flash, then press the STEP key, and the flashing number will move to the left, scroll TUNING, change the value, then press the STEP key ….. until it becomes the frequency we want. This method, under the VHF/SW/AIR band, can quickly find the frequency we want.

SET Radio

1. SET stereo: Under FM band, if you insert headphones, it will enter stereo mode, press the SET key, and you can turn off and on the stereo.

2. SET Bandwidth: In the FM/VHF band, Long press the SET key for 2 seconds to start setting the bandwidth, then press the SET key, you can choose between 5, 50, 150, and 200KHZ. 3 seconds to exit.
   Civilian walkie-talkies generally use a narrow frequency, e.g., 5KHZ. However, some devices require a wide frequency, e.g., 200k. After receiving a radio station, if it is not clear, you can try to change its bandwidth, and sometimes the radio station sounds become clearer.

3. SET SQ: In the AIR band, Long press the SET key for 2 seconds, and the “ON” or “OFF” symbol will appear. Press the SET key again and select “ON” or “OFF” to turn on and off the SQ function, and will automatically exit and take effect after 3 seconds.

   • SQ: Adjust the squelch: When the radio does not receive a signal or the signal is weak, to avoid output noise, it will automatically cut off the output signal. This function is called squelch.

4. SET keyboard backlight time: Before turning on the computer (when the clock is displayed), Long press the SET key until “BL 5 “appears. Press the SET key again. We can choose 5 seconds, 10, 15, or 20 seconds as the backlight time.

Set Time & Alarm

TIME.SET key:
Can only be set in the time state (off state), the clock cannot be set after power on. Long Press TIME.SET key for 2 seconds to start setting time, enter hour, then press TIME.SET key, enter the minute and press TIME.SET key again, setting is finished. This machine only supports 24 small-time systems.
Alarm clock key:
Long press for 2 seconds to turn on or off the alarm clock. press the ALARM key to display the clock and exit after 3 seconds.

Alarm clock setting:
Can only be set in the time state (off state), and cannot be set after power is on. Long press AL.SET the key for 2 seconds to start setting the alarm, enter the hour, and press AL.SET key again, enter minute, press again will appear RADO or bu2 symbol, we need to press up and down key to choose.

1. Select bU2, then press AL.SET, the setting is complete, after the setting time reaches, the alarm symbol on the screen will flash and the “BIBI” sound will sound. ‘BIBI’ sound will sound for 3 minutes, then sleep for 5 minutes, then sound for 3 minutes… After 5 cycles, a total of 40 minutes, the alarm will be automatically turned off, During this period, you can press the ALARM key to manually turn off the ‘BIBI” sound, and the alarm symbol will no longer flash. can long press the ALARM key again to Turn off the alarm clock, the alarm clock symbol disappears.
2. select RADO, which means turn on the radio (the last frequency you listened to). Press AL.SET again, the “FULL or,10,20… 80,90″ will appear.

FULL means start the radio.10 means: radio sound on for 10 minutes, … …… If we select 10, press AL.SET again and the setting is complete. When the alarm is on, the alarm symbol will flash, the last station listened to will be played and the radio will turn off automatically after 10 minutes. We can press ALARM again to exit the alarm state and the alarm symbol will stop flashing. long Press the ALARM key to.

Enter the MODE

1. Press the MODE key to start playing the TF card, then press the MODE key again to enter the Bluetooth (BT) mode, The “BT” symbol starts to flash, indicating that it is waiting for pairing. The device name is: RD-239. Turn on the phone and select RD-239 for pairing. After the connection is successful, the “BT” symbol will no longer flash. At this time, you can use the mobile phone to play music and answer incoming calls. You can use the up and down keys to select songs, and you can use the pause/play key.
2. In any mode, insert a TF card, it will enter the TF card playback mode, and the “TF” symbol will light up. We can press the loop key to display all loops, single loops, and random playback in turn.
3. The TF card is not inserted or the TF card is damaged. The screen will display ERR, indicating that the TF cannot be read. If there is no TF card, the recording function cannot be started. Because the recording files need to be placed in the TF card.

EQ function:
when playing TF card or BT music, press the EQ key, and you can set up 6 kinds of EQ. EQ1=Normal;EQ2=POP;EQ3=Rock;EQ4=Jazz;EQ5=Classic;EQ6=Country.

LOOP KEY：
By pressing the LOOP key, we can select, All Loop, Single Loop, Random Play, and three modes.

Recording

If the TF card is not inserted or the TF card is damaged, the recording function will not start. Because the recording files need to be placed in the TF card.

Recording Radio:
In RADIO mode, long press the REC key for 2 seconds, and start recording the radio. the REC symbol starts flashing, press the REC key, pause recording, pick up the REC key again, and resume recording, to end recording, you need to long-press the REC key for 2 seconds. The recorded files will be saved according to the serial number starting from FM001, and saved in the recording folder in the TF card. If the TF card is not inserted, or the TF card is damaged, the recording function will not start.

Recording external sound(MIC)
In TF card playback mode, Long press the REC key for 2 seconds to start MIC recording, and long press the REC key again for 2 seconds to end the recording. The REC symbol will flash during recording, and we can short press the REC key to pause and resume recording. Recording files will be saved with serial numbers starting from MIC001. Save in the recording folder.

Recording playback function:
In TF card playback mode, long press the REC FILE key for 2 seconds to enter the recording folder, at this time you can play the recording file, press the previous song or the next song to select the recording file, press the SCAN key to play or pause the playback of the recording file. Long Press the REC FILE key again to exit the recording folder.

Delete the recording file:
Long press the REC FILE key to enter the recording folder, and scroll the TUNING knob to find the recording file you want to delete. Long press the DEL key, and the DEL character starts flashing on the screen. Press the DEL key again to confirm and the deletion of the file is completed.

Use region setting

We know different countries and regions, the frequency used will be different, this machine is applicable worldwide and needs to be set to local frequency, in the clock state (before powering on), long press the BAND key, and it will show 64 or 76 or 87 or 87.5, press the up and down key to select, three seconds after setting finished in and automatically exit. They represent the frequency used in different countries and regions.

Detailed specifications

Frequency range FM:87(76)-108MHz AM:520-1710kHz(US) AM:522-1610kHz(jp) SW:3.20-29.99MHz VHF:30.0-200.0MHz AIR:118.0-138.0MHz
WB:162.400-162.550MHz| Receiving sensitivity FM≤8dB AM≤87dB AM≤87dB SW≤32dB VHF≤8dB AIR≤7dB
---|---
Quiescent Current| ≤50uA
Max Current| ≤300mA
Loudspeaker| 4Ω/3W
Bluetooth version| VER 5.2
Minimum operating voltage| 3.3V
TYPE-C input| 5.0V-MAX1.5A
BL-5C Battery| 1000MAH/3.7V
AA Battery| 31.5V
TF card playback format| MP3 & WAV & WMA
MAX TF card capacity:| 256G
Lighting power| MAX:100 lm
Product SIZE| 2885*138MM
Net Weight| 200 g

Antenna-How to use

1. Built-in magnetic rod antenna, only used for AM radio. We need to be parallel to the ground and oriented. When the electromagnetic wave direction is perpendicular to the magnetic rod, better signals can be received.
2. Telescopic antenna, used in FM/VHF/SW/WB/AIR bands. When using it, we need to adjust the antenna direction and antenna length. Especially the SW/AIR band. It’s not that the longer the antenna is, the better. Sometimes by shortening the antenna and changing its direction, you can receive more and clearer stations. Because the antenna needs to adapt to the direction and wavelength of electromagnetic waves.
3. ANT antenna access port, using 3.5 standard port. Introducing an external antenna, only suitable for FM/VHF/SW/WB/AIR bands.

External interface

1. TYPE-C input.

   • TYPE-C data cable will only charge BL-5C batteries, it will not charge AA batteries, Please connect the 5V charger, computer interface, standard USB output port, etc. Please do not connect the phone’s fast charger, the phone’s fast charger output has 9V or 12V. It may burn the machine. This machine has done this protection, but the risk still exists.
   • TYPE-C cable can be connected to a computer, as a computer speaker, and TF card read and write function. Only supports the WINDOWS system, this function is not stable compatibility, if you can not read the TF card, please replace the computer, and check whether the wire is a data line (inside the 4 cores, can read data), the machine distribution 4 cores data cable. Please do not use the 2-core charging cable. It only has a charging function, and can not read and write TF cards. The cheap charging cable sold on the market is only 2 cores, can only be used for charging, is not a data line, can not read TF card, and can not do for the computer speaker connection.

2. 3.5 headphone jack.

3. 3.5 AUX IN input interface

4. 3.5 ANT:
   external antenna input interface. Provide antenna extension for FM/SW/VHF/WB/AIR.

5. The flashlight uses a 2-speed switch, which can turn on the high beam and low beam.

Notes For Attention

1. Make sure to take out the batteries when the device is not used for a long time. Otherwise, the batteries may leak fluid.
2. Do not use this product in an over-humid place, which may shorten its service life.
3. Unauthorized dismantling or repair of this product may result in electronic breakdown or even damage, which is not within the scope of warranty repair.
4. When inserting the TF card, please confirm whether the direction is correct. Do not use too much force to avoid breaking the TF card.
5. When the screen displays ERR, it means that the TF card cannot be found. Please check the TF card or replace it with a new one.

Weather Alarm
Press the BAND key until the WB band appears, we can press the up and down keys to listen to the 7 weather frequencies (WB signal is only available in North America), long press the SCAN key to scan the weather alarm signal when a 1050KHZ alarm signal enters, the radio will start the alarm and flash the backlight to alert us of a weather anomaly. Long Press the SCAN key again to end the weather alert function.
(For use in North America only, no information will be received elsewhere.)

Troubleshooting

Radio signals are not clear or received radio stations are few:

1. Buildings of concrete structures, fluorescent lamps, and electromagnetic waves interfere with radio signals.
2. Try to use manual tuning in the place where signals are weak.
3. While listening to AM broadcasting, to ensure a broadcasting effect, place the device forward and make it be perpendicular to the ground, and the AM antenna needs to keep parallel to the ground.

Failure to switch on:
When the charge level in the batteries is not sufficient or the elastic piece for the battery is rusted due to fluid leakage, change the batteries or Clean away the rust on the elastic place in time.

The radio turns itself off during use:
Generally, the battery power supply is insufficient, resulting in a natural shutdown, please replace the battery. You can also re-insert the battery, and check the battery power, if there is still 1 cell of electricity or 2 cells of electricity, you can turn down the volume of the radio, or use headphones to listen to the radio, can also be used for a while, you can squeeze the last drop of energy in the battery. This is because the battery quality is not good enough to provide enough current to the radio, when the radio uses headphones, the current consumption is minimal.

The flashlight will dim after a period of use:
This is a normal phenomenon, because the new battery voltage is higher, after a while, the power consumption part of the battery voltage will become lower, and then it gives the electric light power will become lower. The

TYPE-C interface cannot connect to the computer:

1. Check the TYPE-C data cable first, please use the original data cable delivered, and make sure you are using a 4-core data cable instead of a 2-core charging cable.
2. When the TF card cannot be read and written, please replace the computer. This machine only supports Windows system computers. Other devices may not be able to read and write the TF card in the radio, you need to take out the

TF card, please use other settings to read and write the TF card.

Manufacturer: Shenzhen Lijia Technology Co., Ltd
ZL393688798@Foxmail.com.

MADE IN CHINA.

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