PROJECT27_MKIII.kicad_pcb
author: brainwave
2 layer board of 2.30 x 1.80 inches (58.4 x 45.7 mm)
Uploaded:
February 16, 2023
Shared:
February 16, 2023
Total Price:
$20.70
Transistor Radiosonde Balloon Telemetry Transmitter Board Version 2.
Based on the ©1964 design of project #27 from 103 Simple Transistor Circuits for a “Telemetering Transmitter” but added 2nd channel TX control, and filtering for 27 MHz un-licensed ISM Band. Using mostly period technology - keeping BJT only NPN Si types vs. PNP. The only “modern” component added is the white LED Beacon. Definitely overdone.
More details on Github and my site: Project27
Transistor Radiosonde Balloon Telemetry Transmitter Board Version 2.
Based on the ©1964 design of project #27 from 103 Simple Transistor Circuits for a “Telemetering Transmitter” but added 2nd channel TX control, and filtering for 27 MHz un-licensed ISM Band. Using mostly period technology - keeping BJT only NPN Si types vs. PNP. The only “modern” component added is the white LED Beacon. Definitely overdone.
More details on Github and my site: Project27
