The frequency of most of the handheld walkie-talkie on the market is 400-470MHz, and the max output power is 5W which the effective talking range is about 5-8KM(only in wide-open area). In some area such as in the city with tall buildings, the range is only 1-2 km, in some case it got only few hundred meters!

In order to realize the long-distance communication, we need repeater. But the price of normal manufacturer of repeater is very high, so this new type repeater is just launched! The operation is very simple, it’s without power supply! And do not need to change any part of the radio. All you need is just two handheld radios, put the jack into the headset and the speaker mic (2.5mm&3.5mm) with this radio repeater box, it become a very practical small repeater!!

 

 

 

The link between the relay station and relay station

Relay station signal coverage area of signal extension

The field construction of cable erection

Underground mine

Cave construction

Culvert emergency rescue

V-U cross section relay

Small basement and ground walkie talkie signal connection

Large activities and other occasions emergency use!

 

• The transponder downlink forwarding (differential and conventional relay station), a machine as a signal of uplink receiver, B machine as the signal downlink transmitter. Has reached the relay purposes.
• Bidirectional forwarding, machine of a receiver, B machine emission. B machine to receive, machine of an emission. To achieve bidirectional forwarding function.
• The relay box for audio trigger mode, when in use, the as received signal walkie talkie at full volume! 

Antenna / diplexer installed applications

• Unique multiplexer: two handheld computer connected to a relay station, such as the peerless multiplexer, two hand should be separately using two antenna! The two antenna should be erected vertically! And between the two of them try to distance! At least not less than 5 metres! (two walkie talkie antenna avoid parallel erection!)
• A duplexer: purchase the corresponding frequency / power duplexer, with “on the joint” two handset antenna output terminal respectively docking to the duplexer transmitting and receiving end, set the players holding table corresponding frequency (frequency should be consistent with the duplexer). A duplexer case, relay station as long as the need to connect to an antenna! And erecting the antenna has no special attention! Just try to please!
• Recommend using the duplexer, because a duplexer relay stations when the antenna is no special requirements! As long as the height is enough to.
• Recommend the use of “original Kenwood” or “Motorola” brand walkie talkie”! As a result of the customer to use domestic non-standard walkie talkie and cause the relay box not work! Nonself at products, responsible for the consequences from customers!

 

• The one-way relay box forwarding mode (conventional relay station mode)! A machine receives the signal, the B machine transmission signal. Sending / receiving machine must be set to two different frequencies, the frequency is higher than the conventional transmitter set receiver frequency, and high / lower, high / low frequency difference of the 10M, the frequency difference is bigger is better.
• The one-way relay box in the process of using the jack do not reverse connection, otherwise this trunk box will not work.
• Bidirectional relay box plug does not divide the input / output, two-way relay box forwarding mode: A machine receives the B emission, B emission machine to receive A

• The relay box for audio trigger mode, so when you use the walkie talkie volume to your maximum, otherwise may appear not to send state.
• Such as transmission delay time is too long (more than 3 seconds), conventional because walkie talkie transmit antenna near the trunk box too close to cause the transmitted signal interference caused by relay box! Can be used to solve the problem of interference of external interphone antenna

 

1. The repeater box is using audio trigger mode, so turn the volume of your radio to maximum while using. Otherwise it may not be transmitted.

2. If a launch delay time is too long (over 3 seconds), Generally It is because of the Radio transmitting antenna too close to the repeater box causing signal interference with the repeater box.

 

2. Radios are too close to each other may cause interference.

3. Radios and repeater box too close may cause interference

4. Keep a certain height difference among the radios, the signal will be better.

If the reapter box is not working, Please send me a video to prove it. and we will full refund you!.