In the USA the FCC has authorised AST-SpaceMobile to launch its full constellation of 248 large satellites that includes 430-440MHz for emergency telemetry and control when not over the United States. This is despite there being no such frequency allocation. However, the FCC permitted the use of the frequencies using Article 4.4 of the ITU Radio […]
From rsgb.org - Click here to continue reading.
From rsgb.org - Click here to continue reading.