What is “Single Operator Two Radio” contesting?
Although it is not a separate entry class in most contests, some single-operator entrants will use two radios when they contest. This is known as “single operator two radio” or SO2R for short. Typically one radio is used to “run” on a band, while a separate radio – with separate antennas and amplifier if necessary – is used to “search and pounce” on a different band. (The bands need to be different to prevent the transmission from one radio from damaging the receiver in the other.) Most contest rules specify that a single operator may only transmit one signal at a time, so a SO2R operator must be careful to ensure that both radios cannot transmit simultaneously. Some sophisticated hardware is available from contesters like Bernie ZS4TX to interface the components of a SO2R station.
