Aviation Band Receiver DIY Kit
Aviation Band Receiver DIY Kit
Descriptions
Airband Radio Receiver Kit Aviation Band Receiver High Sensitivity
Power supply: 12 VDC
Antenna: 50 ohms, is not balanced
Typical receiving current: 30 ma
Receive frequency: 118 MHZ to 136 MHZ
Description
A simple manual included a schematic and parts placement list. This kit is dedicated to receiving calls between aircraft and towers with a good (VHF yagi antenna), the range is around 190km with a regulated 12volt DC supply. Main Points: Power supply: 12 VDC Antenna: 50 ohms, is not balanced Typical receiving current: 30 ma Receive frequency: 118 MHZ to 136 MHZ Working pattern: AM Circuit principle: The antenna receives signals and first enters a band-pass filter, the band-pass filter function is to ensure that the 118 MHZ to 136 MHZ signal can be put into 2 sc3355 high, another signal is maximum attenuation. After filtering, the signal is amplified by the 25th sc3355 (2), and then enters the NE602 mixing, at the same time NE602 inside a voltage-controlled oscillator, the frequency changes because of the D1 junction capacitance, and design covers about 120 MHZ to 150 MHZ |