The knowledge base
How far is the 1 walkie talkie call distance?
Conventional walkie talkie communication distance open up to 8 ~ 10 km, the general urban area up to 3 ~ 5
Km, in tall buildings or mountains barrier case, calls will be relatively short distance. When a network support
Call duration, range up to tens of kilometers of walkie talkie. Networking is the use of relay station (also known as a base station or
The transfer station), automatically receive the signal transmitted from the transceiver, and carries on the amplify and forward. Networking can
Large walkie talkie communication coverage, extension distance calls, open up to 10 - 20 km (holding on
Speaking machine) even 30-50 km (vehicular intercom), can cover the basement, underground parking building,
The fire channel shielding serious, usually called the dead angle area.
2 the mass of consumers to buy a walkie talkie?
The mass of consumers can also buy walkie talkie, but before the purchase and use of walkie talkie must apply to the local
Radio Management Committee (hereinafter referred to as "no authority") application, receive a station license and pay the frequency occupation fee
. Since December 6, 2001, China's market opening civilian walkie talkie, the use of 400MHz, emission
Civilian walkie talkie less than 0.5 watts of power, without any formalities.
3 walkie talkies can call?
In a network support conditions, can be used to call the walkie talkie. But if only a single between routine
Call, cannot realize the calling function.
Use common sense
A, antenna use matters needing attention
1, when in use, use the hand to hold the antenna not.
2, walkie talkie antenna can not twist, otherwise easily when transmitting the power tube burn.
3, do not use damaged antenna. At launch, if the antenna contact with skin damage, may cause
Please minor burns.
Two, the battery use matters needing attention
1, we should use the original or approved batteries.
2, if the metal conductors such as jewelry, key or beads reach the bare battery electrodes, all batteries
Are likely to cause damage or personal injury. Please be careful with already charged battery, especially when it into
Pocket, wallet or other metal containers, need special attention.
3, the charge should be in 5~40 degrees in the environment. If more than this temperature range, the battery life is
At the same time effect, may filled rated capacity.
In three, EMI / EMC
To avoid electromagnetic interference and / or electromagnetic compatibility problems caused by, with "off intercom" standard
General occasions should close the walkie talkie. For example, a hospital or other health care medical equipment use occasions. In flight
According to the requirements, should also be off intercom.
Four, walkie talkie operating considerations
1, when the walkie talkie was launched, talkie in a vertical position to maintain and keep the microphone and mouth 2.5-5
Cm distance. The launch, walkie talkies from the head or the body of at least 2.5 cm. If the handheld interphone
Machine to carry on the body, the launch, the antenna from the body of at least 2.5 cm.
2, do not use in the course of many on-off action, while the volume was adjusted to fit your listening
Feel the volume.
Five, walkie talkie to use safety precautions
1, with airbags in cars, walkie talkie on the balloon will not be involved at the start of the fan
Wai. If the walkie talkie in regional scope may involve the deployment of the airbag, airbag deployed rapidly once,
Walkie talkies may be as great impact injuries to the officers inside.
2, in a potentially explosive atmosphere or the occasion, unless special certification through the walkie talkie, otherwise
To close down walkie talkie. In potentially explosive atmosphere, electric spark can cause an explosion or fire.
3, not a potentially explosive atmosphere under the replacement battery or batteries. Installing and removing the battery
May cause contact EDM and cause an explosion.
4, near blasting area and detonator region before, must first close the walkie talkie, to avoid a possible explosion
Six, walkie talkie routine maintenance
1, walkie talkie after long-term use, by the health, the control knob and the casing is easy to dirty, please from the walkie talkie
Control knob removed, and use neutral detergent (do not use strong corrosive chemicals) and a damp cloth to clean the cabinet.
The use of such as detergents, alcohol, spray or oil preparation and other chemicals may cause the walkie talkie surface and
2, gently walkie talkie, not portable antenna for mobile interphone.
3, do not apply to the attachment, please cover dust-proof cover (if equipped). :
1, not with other team members within the group of the dialogue?
First make sure you are using frequency and sub audio signal is the same as the other members of the set; if there is no problem
Please confirm whether the other members of the group in the service area.
The other members of the group appeared 2, channel sound?
Please change the sub audio signal tone signal tone at the same time must change all the walkie talkie within a group, or for more
Change the frequency point.
The use of long battery charge after 3, right?
Battery life is up, please update the battery. (the number of charge discharge of nickel metal hydride batteries normal use is generally 500
Second, the lithium battery is 1000 times)
4, walkie talkie doesn't scan?
Not included in the walkie talkie programming channel scanning (professional settings) scanning function or the closing machine.
5, after programming full band noise?
Walkie talkie programming the squelch all open. Non professionals suggested that do not adjust function parameters.
Regular toot toot calls occurred in 6, after programming?
Walkie talkie programming error. Preparation of the frequency beyond the frequency range walkie talkie specified or selected models
7, the use of Headset after a period of silence?
Earplug socket walkie talkie bad. Send repair repair station.
8, communication distance sensitivity difference?
Check that the antenna is intact, the antenna base is loose or damaged (is please send repair station repair).
9, walkie talkies can receive each other's speech but can't launch?
Check the PTT button. Send repair repair station.
10, can not boot or always power off?
Check the walkie talkie battery contact piece whether deformation or fracture.
Walkie talkie 11, with LCD showed no or error display?
Walkie talkie fell or improper use of bad contact LCD bad or conductive rubber (send a repair station maintenance).
12, the other receiving small voice or voice interrupted?
Check whether the plug hole walkie talkie transmitter at MIC (or send repair station maintenance).
13, receiving intermittent and accompanied by large noise?
To limit the communication distance walkie talkie or tall buildings blocking in the basement (no please send repair station
How to deal with the 14, the machine after water?
Take apart the machine at first, will all the external parts one by one (such as keys, dismantling of PTT glue light guide etc.), use the
Anhydrous alcohol or special plate washer water will board carefully cleaned and dried, cleaned up circuit for small tools
Plate stains; then with anhydrous alcohol soaking, the conditions can be used in ultrasonic cleaning machine for cleaning; secondly fishing
After the dry with a hair dryer (note that the temperature not too high), and watch the circuit board whether the injury, if there is a break
To be connected with a fine enameled wire, with three meter board power supply positive and negative extreme resistance, can not be short circuited or broken
Lu (electricity, view the current normal is about 40MA and the launch of not less than 1000MA); finally, check
Check whether the radio port such as dirty, dirty together to clean up, at the same time as other fault and then repair according to routine.
The circuit of serious corrosion of the water are generally unable to repair, so the machine after water should be timely disposal.
15, a testing method of machine of common problems
1), frequency interference in use often have string frequency or receive other radio noise, interference of walkie talkie
Normal use, there are three treatment methods: 1. The frequency change. The sub audio or DTMF decrease (squelch level
Applicable in the same conditions of individual machine received interference)
2) and close: transceiver in communication distance with the actual need to within a few meters, can adjust the machine power
And squelch level to achieve. Consider in will not improve in the adjusted installed when the transfer station to solve.
3), voice interrupted: walkie talkie communication at the critical distance often found intermittent phenomenon, this time can adjust the static
Noise level or cancel receiving sub audio to test effect.
4), howling: at a distance of only a few meters or more nearly two sets of walkie talkie communication will squeaking. This is normal
Phenomenon, can turn to the appropriate size to solve.