diymore | 118-136MHz Receiver Module High Sensitivity Aviation Band Receiver Module Receiving Frequency For DIY Kit DC 7.2-9.0V

Features:1. It is generally used to receive communication between aircraft and towers, and can be used with high-performance antennas up to a maximum distance of 190Km.2. Equipped with a bandpass filter, using 3355 high amplifier, CD7358 high amplifier+mixing scheme.3. Supports AM mode, covering the frequency range of 118-136MHz aviation band.4. PCB printed inductor routing design simplifies the assembly process.5. Built in AGC circuit and mute function ensure a more comfortable listening experience.Product Introduction:This product is specifically designed to receive calls between aircraft and towers. With a high-performance antenna (VHF Yagi antenna), it can receive calls between various types of aircraft and towers within a maximum range of about 190Km in open areas. Friends who like it, please pay attention. The kit adopts a bandpass filter, 3355 high amplifier, CD7358 high amplifier+mixing, and MC1350 medium amplifier scheme, which can receive AM signals at 118-136MHz. The printed inductor board directly prints inductor wiring on the PCB board, simplifying assembly. There is an AGC circuit on the board to ensure comfortable listening, while the mute function avoids prolonged noise. The PCB board size is 9.2 * 7.5cm and can be used with a 97 * 40 * 100mm aluminum chassis.Parameter:Power supply: DC 9-12VAntenna: 50 ohms, unbalanced typeTypical receiving current: 30mAReceiving frequency: 118MHz-136MHzWorking mode: AMIntermediate frequency: 10.7 MHz (ceramic filter frequency selection)Sensitivity: ≤ 0.5 μ VPCB board size: 92mm * 75mmPackage Include: 1X aviation band receiver DIY kit[Note: This kit is not soldered properly and shipped with scattered electronic components. The finished board pictures displayed in our store are for reference only when purchasing.]Reminder: As the VHF band is already similar to light propagation - straight line propagation, the receiving location is unobstructed from the airport but far away (greater than 25Km). Please be sure to install high gain antennas such as VHF band Yagi antennas; If there are large obstacles (including but not limited to high-rise buildings, mountains, and giant towers) between the receiving location and the airport, be sure to avoid them. Thank you!Common question answer:Q: What issues should be noted?A: VHF is almost propagating in a straight line. For better results, it is recommended to use an external antenna, such as a 1/4 wavelength (about 60 centimeters) GP antenna!Q: What kind of antenna should be used?A: For novice enthusiasts, it is recommended to use GP antennas. The GP antenna consists of several metal rods and an M-mount, and is easy to manufacture.