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Home >>  RF Remote Control >>  How to get the longest distance by using the receiver and transmitter?
Question 58/144
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How to get the longest distance by using the receiver and transmitter?

Question:

How can I get the longest distance by using the receiver and transmitter?


Answer:

All the working distance of our products is a theoretical data, it shall be operated in an open ground, no barriers, no any interference.

Take model 0020144(S1M-DC12-ANT2 & CB-1) as an example, the distance 2000m is a theoretical data, it shall be operated in an open ground, no barriers, no any interference. But in the practice, it will be hindered by trees, walls or other constructions, and will be exposed to some interference by other signals. Therefore, the actual distance may or may not reach 2000m. 

The working distance of the transmitter refers to the sensitivity of the receiver when it receiving the signal and the capacity of the transmitter. The sensitivity of the receiver depends on the antenna. So, if you want to have the longest distance, you may first choose a high power transmitter. When you want to control the devices outside the house or from a far distance, it is better to choose controller with external antenna.

Trees, water, cement or other constructions will all reduce the signal of the transmitter. You may set the receiver on a higher place to get a better signal. 

How to get the longest distance of the transmitter:
First, choose the suitable remote control kits and its accessories.
  • Transmitter: you can choose a high power transmitter.
There are some examples:
Model Working Distance Size
CP-2 500m (theoretical) 135mm x 42mm x25mm
CB-2 1000m (theoretical) 135mm x 42mm x25mm
CC-2 5000m (theoretical) 135mm x 42mm x 25mm

  • Receiver: Normally, almost all the receiver consists of their own internal antenna. You’d better choose the receiver with external antenna. External antennas consist of magnetic sucker antenna (longer distance) and telescopic antenna (middle distance). According to the environment, choose the suitable external antenna for your receiver so that it can get a longest distance.

Tips:
  • Stand the antenna on end; 
  • Completely stretch the antenna.
  • By doing this, you can get a better signal, therefore, you can get a longest distance.

  • The external antenna can be set on both receiver and transmitter.

Second, operate the remote control kit in a right way.
  • (1)The battery power of transmitter must be adequate and the battery voltage must higher than the theoretical level. For example, the battery voltage of transmitter is 12V, when the battery power is adequate, the voltage will higher than 12V, may be 12.1V or 12.2V.
  • (2)The battery voltage of receiver must be adequate and must be within the working range. Using regulated power supply and choosing the good quality power adapter. If the receiver is using the storage battery, then the battery capacity must be high.
  • (3)Don’t put the receiver in a metal box, because the signal weakens greatly by the metal. The solution is set an external magnetic sucker antenna outside the metal box.
  • (4)When the receiver cannot receive the RF signal from the transmitter, which means the working distance may not reach the theoretical data. Then you can choose a signal repeater model 0010001(R-01) to solve this problem. 

Apart from the above information we have mentioned, there is another important news we want to show you.
  • In the past, we only have CB series transmitter, which working distance is 1000m. Now, we have CC series transmitter, its theoretical working distance can reach about 5000m, which is much longer than 1000m. 


  • These remote control kits have feedback function and two ways working mode.

  • With the feedback function, they can let the user know whether he/she had already connected the transmitter and receiver successfully in such a long distance. 

  • Two ways working mode: When the receiver gets the signal of transmitter, it will immediately send a return signal to the transmitter. When the transmitter receive the feedback signal of the receiver, the transmitter will exude a buzzing sound like “D~” which means it receive the feedback signal successfully.

  • The receiver is waterproof case with waterproof connectors. The receiver can be installed outdoors. They are also high power remote control kits, each relay output can work at maximum current 30A. 

  • External magnetic sucker antenna with 5meters cable, the antenna can be installed outside the building to get better working distance.

  • The remote control kits can be used in agriculture automation, industry automation, and home automation. It can control products on land, water and air, especially in a long distance, such as business signs, motorboat, farm, pasture, offshore unmanned operation, field call, remote security alarm, unmanned aerial vehicle, etc.
 
This question was added to our store on Friday 19 June, 2015.