#SO2R

SO2R means single operator, two radios, a way of operating in which one person uses two transceivers and switches between them. Typically one radio runs on a frequency while the other looks for multipliers on a different band. It needs equipment such as filters, an interface with a transmit interlock and stereo headphones, and a logger that knows which radio is active. Whether it is allowed depends on the contest and category, so the rules come first. Articles under this tag cover the setup, the logging problems that two radios create and the statistics that show how it works.