1.
2, the walkie-talkie antenna can't be unscrewed, otherwise it is easy to burn out the power tube when transmitting.
3, do not use the damaged antenna. When transmitting, if the damaged antenna touches the skin, it may cause please slight burns.
Precautions for Battery Use
1.You should use the original or approved battery.
2. All batteries may cause damage or personal injury if metal conductors such as jewelry, keys or beads practice touching the exposed electrodes of the battery. Please be careful with a fully charged battery, especially when carrying it in a pocket, wallet or other metal container.
3. Charging should be performed at 5~40 degrees Celsius. If the temperature exceeds this range, battery life will be affected and there is a possibility that the battery will not be charged to its rated capacity.
Electromagnetic Interference/Electromagnetic Compatibility
To avoid problems caused by electromagnetic interference and/or electromagnetic compatibility, turn off your walkie-talkie wherever it is labeled with a "turn off walkie-talkie" sign. For example, in hospitals or other places where healthcare medical equipment is used. You should also turn off your walkie-talkie on request when traveling on an airplane.
Precautions for operating the walkie-talkie
1. When the walkie-talkie is transmitting, keep the walkie-talkie in a vertical position and keep the microphone 2.5-5 centimeters away from the mouth. Keep the walkie-talkie at least 2.5 centimeters from your head or body when transmitting. If the handheld walkie-talkie is carried on the body, keep the antenna at least 2.5 centimeters from the body when transmitting.
2. Do not perform multiple power-on and power-off actions during use, while adjusting the volume to a level suitable for your hearing.
Safety precautions for the use of walkie-talkies
1. In cars with airbags, do not place the walkie-talkie within the range that may be involved in the deployment of the airbag. If the walkie-talkie is in the area that may be involved when the airbag is deployed, once the airbag is rapidly deployed, the walkie-talkie may be injured with the great impact on the people in the car.
2. In potentially explosive atmospheres or situations, turn off the intercom unless it has been specially certified. In potentially explosive atmospheres, electrical sparks can cause an explosion or fire.
3. Do not replace or charge the battery in a potentially explosive atmosphere. Installing and removing the battery may cause contact sparks and result in an explosion.
4. Turn off the walkie-talkie before approaching blasting areas and areas where detonators are located to avoid possible explosions.
Routine maintenance of the intercom
1, after long-term use of the intercom, the button, the control knob and the case are easily dirty, please remove the control knob from the intercom, and use neutral detergent (do not use strong corrosive chemicals) and a damp cloth to clean the case. Use of chemicals such as stain removers, alcohol, sprays, or petroleum agents can cause damage to the surface and housing of the intercom.
2. Hold the walkie-talkie gently and do not move the walkie-talkie with the hand-held antenna.
3, not applicable accessories, please cover the dust cover (if equipped).
Technical Assistant
Can't talk to other group members in the group?
First, please make sure that the frequency and subaudio signal you are using are the same as the other members of the group; if there is no problem, please make sure that the other members of the group are in the service area.
The voice of other group members appears in the channel?
Please change the sub-frequency signal tone, and you must also change the signal tones of all the radios in the group, or apply for a frequency change.
How long does a properly charged battery last?
Batteries have reached the end of their life expectancy, so please renew them. (Ni-MH batteries are normally charged and discharged 500 times for normal use, and Li-ion batteries are 1000 times.)
The intercom doesn't scan?
The channel is not included in the scanning when programming the intercom (set by a professional) or the scanning function of the whole machine is turned off.
Full band noise after programming?
The squelch is turned all the way on when programming the intercom. Non-professionals are advised not to adjust the function parameters.
Regular beeping after programming?
The intercom was programmed incorrectly. The frequency programmed is out of the frequency range specified for the intercom or the model selected does not pay with the machine.
No sound after using headset for some time?
The earphone socket of the intercom is broken. Send it to the service station for repair.
Talking distance becomes close to poor sensitivity?
Check whether the antenna is intact, whether the antenna holder is loose or damaged (yes, please send it to the repair station for repair).
Can the walkie-talkie receive the other party's speech but can't transmit?
Check the PTT button. Send to service station for repair.
Can't turn on the radio or often power off?
Check if the intercom battery contact is deformed or broken.
No display or error display on the intercom with LCD?
The walkie-talkie has been dropped or used improperly resulting in bad LCD or poor contact of conductive rubber (send it to repair station for repair).
The other party to receive the sound is small or voice intermittent?
Check whether the small hole at the MIC feeder of the intercom is blocked (if not, please send it to the maintenance station for repair).
Receive intermittent and accompanied by large noise?
To the intercom limit communication distance or there are tall buildings blocked in the basement, etc. (No, please send to the maintenance station for repair).
How to deal with the water in the machine?
First dismantle the machine, dismantle all the external parts one by one (such as buttons, PTT rubber, light guide column, etc.), use anhydrous alcohol or special washboard water to clean the circuit board carefully, dry it, and use small tools to clean up the stains on the circuit board; and then soak in anhydrous alcohol, and under the condition of ultrasonic cleaner can be used to clean it; and then fish it out and dry it with a hairdryer (pay attention to the temperature should not be too high). And see if the circuit board is injured, if there is a broken line to use a thin enameled wire for coupling, with a triple meter to measure the board's power supply positive and negative extremity resistance, can not be short-circuited or disconnected (energized, check the current, the normal 40MA or so, the launch of the launch of not less than 1,000MA); Finally, check whether the wireless port is dirty, such as dirty and cleaned up, at the same time, if there is any other failure and then in accordance with the routine overhaul.
The serious corrosion of the circuit into the water machine generally can not be repaired, so the machine into the water should be disposed of in a timely manner.
Testing common problems in the treatment
1, frequency interference: in use there are often crosstalk or receive other radio station noise, interfering with the normal use of the walkie-talkie, there are three ways to deal with it: ① change frequency. ② Add subaudio or DTMF. ③ reduce the level of squelch (under the same conditions as the individual machine to receive interference when applicable)
2, the distance is close: walkie-talkie in the communication distance and the actual need for the difference of a few meters, you can adjust the machine power and squelch the level to achieve. After adjusting the still can not be improved in the consideration of installing a transit station to solve the problem.
3, sound intermittent: walkie-talkie communication in the critical distance is often found in the intermittent phenomenon, at this time you can adjust the level of squelch or cancel the reception of subaudio to test the effect.
Four, whistling: in the distance of only a few meters or closer when the two walkie-talkie communication will occur whistling. This is a normal phenomenon, the sound can be turned off to the appropriate size to solve. </A>
TK-308 tuning method
1, press the PTT plus CTCSS key at the same time to boot, launch or no launch switching frequency lock, to be in the absence of the launch of the case, tuning the receiving frequency, fast tuning press the MON1 key to turn the knob to adjust the MON1 key frequency, such as 410.00 by pressing the CSET channel number 000 flashing, and then use the knob to adjust the desired frequency, and then the MON1 key to adjust the frequency. Then use the knob to adjust the desired channel number, adjusted and then press CSET, if you want to adjust the heterodyne frequency, now adjust the transmit frequency such as: 420.000, adjusted and then press CSET appeared just now adjusted the channel number, and then use the PTT plus the CSET key, with the press such as: send and receive the same frequency directly press the CSET and then use the PTT plus the CSET key with the press can be checked whether there is no locking, press the REV Build a ± sign that has been locked, did not appear to repeat once can be locked CH press and hold the REV key to boot.
2, adjust the progress: in the absence of the launch, hold down the SCAN boot, appear OFF and then use the knob to 4, press the LOW can switch 5.125 adjusted by any key.
3, adjust the sensitivity is also not able to launch when the DIAL key to boot from the knob to adjust a section, adjust the best in 5, adjust the replication of each machine with the same frequency, hold down the LOW key to boot, the CLOHE menu appears, and then adjusted the machine to listen to the sound of the 1 machine press the straight sound.
4, clear: hold down the CSET key to boot all clear.
5, tuning call, no launch when you press the SCAN COOO and then use the keyboard number such as "888" programmed and then shut down, press the SCAN ON1 menu, and then use the knob to OFF, and then press the LOW CODE ON8 shut down can be.
6, adjust the password by pressing the REV button appears OFF and then use the knob to turn the desired password.
7, tune the dumb audio, the receiving frequency tuning more, and then press the DIAL key OFF, to mobilize it for the desired sub-frequency, adjusted, and then press the DIAL key to remove the sub-frequency single, and then press the CSET key, the display of the "00" flashing when you can select the desired channel number and then press the channel number, and then press the CSET key. Then press CSET and the channel flashing, then press and hold the PTT key plus CSET key, press the lock at the same time, press the REV key to check whether the lock, and finally press the DIAL key, the sub-tone number and "±" number can appear.