DIY R20 FM 88-108MHz FM radio/aviation band PLL receiver Aviation radio/AM radio

Description

DIY R20 FM 88-108MHz FM radio/aviation band PLL receiver Aviation radio/AM radio
Description
NOTE： this item is diy kit ,
Need to solder by yourself
This machine covers FM radio band and aviation band (88-108MHz FM mode, 118-136MHz AM mode), please pay attention to friends who like it. Has the following characteristics:
1. Use STC15W408AS single-chip microcomputer as the main control, built-in PLL local oscillator, and self-contained frequency indicating circuit (using 7-segment digital tube, display unit is 100KHz, the photo has color difference, the actual color is red), and the receiving is divided into two bands (88-108 and 118-136), 100KHz step.
2. The kit adopts TA2003 mixing + TA7613 mid/low amplifier scheme, superheterodyne frame FM/AM receiver, single frequency conversion, intermediate frequency 10.7MHz.
3. The original code of this shop, the on-board numerical control volume potentiometer, support automatic configuration saving, support crystal oscillator frequency adjustment and receiving frequency fine-tuning (receiving frequency +10KHz~90KHz).
4. 12V power supply, the size of the PCB board is 84*70mm, which can be conveniently placed in an 88*30*70mm aluminum case.
Reminder: Because the VHF band is already similar to the propagation of light-linear propagation, the receiving location is free from the airport but the distance is longer (more than 25Km), please be sure to install a high-gain antenna such as the VHF section Yagi antenna; between the receiving location and the airport If there are large obstacles (including but not limited to tall buildings, mountains, huge towers), you must avoid the obstacles; otherwise, you can only receive the one-way signal from the aircraft on the way in, thank you!
package:
1pc
DIY R20 FM 88-108MHz FM radio/aviation band PLL receiver Aviation radio/AM radio
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5.When we receive your returned item, we will investigate the situation and consider to offer replacement or refund according to the situation
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