1. Improved frequency range and adjusted frequency interval for easier channel switching. 2. Added squelch function to mute audio when no signal is present. 3. Enhanced sensitivity for improved aeronautical receiver performance. 4. Supports connection to external equipment such as power amplifiers. 5. Designed to receive air-to-ground and air-to-air radio communications. Material: Plastic Item Type: Receiver Band Range: 118–136 MHz Mode: AM Power Supply: 2 x AAA batteries (NOT included) Usage: Insert a compatible earphone into the headphone jack and turn on the unit using the volume/switch knob. Extend the earphone cable fully and adjust the frequency dial to select the desired aviation band. Notes: 1. Avoid interference sources such as generators, switch-mode power supplies, computers, or transmitters during use. 2. Adjust volume to a comfortable level to protect hearing. 3. Fully extend the earphone cable for optimal reception, especially at longer distances, to minimize signal disruption from cable movement. 4. Airband signals travel line-of-sight; use outdoors in open areas or elevated locations whenever possible. 5. Always comply with local aviation regulations when operating this device. 6. Airband transmissions are low-power; allow time when searching for active frequencies. Due to manufacturing variances, appearance and printed markings may differ slightly between batches. These variations do not affect functionality. Package Contents: 1 × Airband Radio Receiver Note: Color representation may vary slightly due to screen settings and lighting conditions. Dimensional tolerance: ±1–3 cm.