In addition to having built in contest band filters onboard the Flex 6600, it’s crucial to also have external high power bandpass filters when running SO2R with amplifiers. All filters used are custom built and tested filters by Pavel, VA6AM. Fans to cool the filters are controlled remotely using Green Heron and are typically switched on during periods of long operating for for RTTY contests.
SO2R switching is done using the Array Solutions Six Pak, which is also controlled remotely using Green Heron. The next phase is to find a QTH where instead of all of this going to low wires in a small footprint, it goes out to some serious aluminum! That’s the next phase for 2019 and 2020.