2-Way RF Switch

The 2-way RF switch is a new addition to the Portsdown system. It decodes a signal sent on the symbol rate switching lines (all 3 high, which was previously unused) which is used to indicate that the LimeSDR output should be used, rather than the Filter-modulator board.

The block diagram shows a comprehensive arrangement with all the features. Many of the blocks are optional – it depends on your requirements.