Home Boeing Boeing 737 What is RTP on Boeing 737? (Radio Tuning Panel)

What is RTP on Boeing 737? (Radio Tuning Panel)

The Radio Tuning Panel (RTP), also known as the Communication Radio Management Panel (CRMP), is an essential component of the avionics system on the Boeing 737-800 aircraft. It is used by the pilots to control and manage the aircraft’s communication system, including radio frequencies, navigation aids, and audio selection. The RTP allows the pilots to tune in to different radio frequencies to communicate with air traffic control (ATC), other aircraft, and ground services, ensuring efficient and safe operations throughout the flight.

With the ever-increasing complexity of air traffic and the need for effective communication between pilots and the ground, the RTP plays a crucial role in ensuring seamless operations. In this article, we will explore the functionality and features of the Radio Tuning Panel on the Boeing 737-800.

How Does the Radio Tuning Panel Work?

The Radio Tuning Panel is located on the center console of the flight deck, within easy reach of the pilots. It consists of a set of knobs, buttons, and a display screen that allow the pilots to interact with the avionics system and tune in to radio frequencies.

The primary function of the Radio Tuning Panel is to control the communication radios and manage the frequency selection process. Pilots can use the panel to select the desired radio, such as VHF (Very High Frequency) or HF (High Frequency), by turning the corresponding knob. They can then enter the desired frequency using the numeric keypad on the panel or select predefined frequencies from the electronic database.

Once the frequency is selected, the pilots can press the “Tune” button to tune in to the chosen radio frequency. The Radio Tuning Panel also allows pilots to monitor the active frequency, which is displayed on the screen, and listen to incoming and outgoing transmissions.

Features of the Radio Tuning Panel

1. Frequency Storage and Recall

The Radio Tuning Panel on the Boeing 737-800 offers the capability to store and recall frequently used frequencies. This feature allows pilots to quickly access commonly used communication channels, such as ATC frequencies for departure, arrival, and enroute phases of flight. By storing these frequencies, pilots can save time and reduce the workload in busy airspace.

Furthermore, the Radio Tuning Panel facilitates the recall of previously used frequencies. This is particularly useful during flight operations where pilots need to switch between different frequencies, such as when transitioning from one ATC sector to another. By recalling the previously used frequencies, pilots can maintain seamless communication without the need to input the frequency manually each time.

2. Dual Audio Control

The Radio Tuning Panel on the Boeing 737-800 provides dual audio control capabilities, allowing pilots to manage the audio selection for both the cockpit and cabin communications. This feature ensures that the pilots have complete control over the audio sources, including the ability to prioritize and monitor the desired audio channels.

The dual audio control feature enables pilots to listen to different audio sources simultaneously, such as ATC communications, cabin announcements, and interphone calls. They can adjust the volume levels or mute specific audio channels as per the operational requirements. This capability enhances situational awareness and enables effective communication management.

3. Integration with Flight Management System

The Radio Tuning Panel is integrated with the Flight Management System (FMS) on the Boeing 737-800. This integration allows for seamless data exchange between the two systems, enabling automatic frequency updates based on the selected flight plan and aircraft position.

When flight crews input the desired route into the FMS, the system automatically retrieves the corresponding radio frequencies for each waypoint or airspace. These frequencies are then populated in the Radio Tuning Panel, simplifying the frequency management process and reducing the chances of manual data entry errors.

Overall, the integration of the Radio Tuning Panel with the Flight Management System enhances operational efficiency and reduces the workload for pilots, allowing them to focus on other critical aspects of the flight.


The Radio Tuning Panel (RTP) on the Boeing 737-800 aircraft is an integral part of the communication system, enabling pilots to effectively manage radio frequencies and ensure seamless communication with ATC and other aircraft. Its features, such as frequency storage and recall, dual audio control, and integration with the Flight Management System, enhance operational efficiency and contribute to the overall safety of flight operations.

As aviation continues to evolve, the Radio Tuning Panel remains a critical tool for pilots, allowing them to stay connected and navigate the complex airspace system. The continuous advancements in avionics technology will likely bring further enhancements to the Radio Tuning Panel, further optimizing its functionality and improving the pilot’s ability to manage communication resources efficiently.

For more information on the Boeing 737-800 and its avionics systems, you can visit the official Boeing website.

For More: What is PERF INIT on Boeing 737? (Performance Initialization – Fmc Page)

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