Skip to main content

Radio control systems are composed of two elements, namely a transmitter and a receiver. This type of transmitter is one that can be held in the hand and can control a remote device via the receiver connected to the remote device.


This type of communications system is used to control drones. When the drone is flying in the air, the controlling transmitter usually will be located on the ground. Basically, a drone transmitter will be able to read the inputs from the control stick and send signals through the air to the receiver in real-time.




Range Technology


When the receiver inside the drone is so far away from the transmitter that the receiver can no longer clearly receive signals from the transmitter this is called the limit of the control range or limit of the radio link.  Typically, this range is about 1 kilometer in normal conditions.


One can just imagine how it would be when someone tries to talk with another person across a field. The range of the radio link will depend on a number of factors such as the:


Transmitter’s output power – there are many transmitter devices operating with power levels below the legal maximum level so that they can be compliant with international standards.


Receiver sensitivity – when a receiver is categorized as being highly sensitive, it can be compared to a human having a better hearing, wherein a signal can be received at a longer distance.  However, during its travel, the signal level is also susceptible to being influenced by the signals surroundings (noise) which will reduce the receiver’ sensitivity.  That is, the receiver may pick up noise at some point.


Antenna quality on both ends – it is always better to have a bigger antenna to send and receive signals more accurately. In fact, one can take advantage of proper antenna placement since it can boost the performance of the system.



Therefore, it is important to know what to look for when buying a radio transmitter. The radio transmitter and receiver are the first items to look for when building a quadcopter or drone.


Beginners find it hard to choose a suitable radio transmitter because some components of this device get outdated easily. But investing in a more decent unit can help if you want it to follow you for many years.




Frequency and Technology


The most widely used frequency in most radio transmitters is 2.4GHz. However, there are also lower frequencies available for a longer range like the 433MHz and 900MHz frequencies. Nevertheless, the standard frequency for radio control is 2.4GHz after the evolution of current frequency hopping technology development.




Why Use 2.4GHz Frequency


Using a 2.4 GHz frequency makes it easier to look for available channels and avoid interference with other pilots, allowing for multiple pilots to fly together at a given time. The higher 2.4GHz frequency has the advantage of being more portable due to its smaller antenna. However, the downside is that it has a shorter range compared to lower frequencies.



The 2.4GHz frequency provides a more secured use with a radio-controlled helicopter or drone models.  This is basically achieved with this new technology by allowing the transmitter and receiver to lock on to the same frequency to ensure improved reliability.


Improved reliability

Improved performance

Safe and secure

Low power consumption

Club flying


The reliability of having excellent transmitter depends on the subcomponents used.  Jasper Electronic is a high-quality reliable source of the power supply for the transmitter.  Follow the link:


for further information on their entire line of power supplies.  Synergy Microwave ( offers excellent VCO or synthesizers which may be used in the transmitter.


Please call us at Peninsula Technical sales 650-965-3636 or visit our web page for further information.  We welcome any questions you might have.




Peninsula Technical Sales represents electronic equipment manufacturers and is proud to offer our services online and to the following cities and their surrounding areas: San Francisco, Santa Clara, San Jose, Fremont, Sacramento, Milpitas, and Santa Rosa.