OperatingAB1WX: POTA Activation, Castle Island State Park, South Boston, MA, November 15, 2021 November 15, 2021November 15, 2021 - by k9hi - Leave a Comment Ryuji Suzuki, AB1WX, Boston, MA, is operating from Castle Island State Park in South Boston (K-6876) for Parks On The Air. He was last heard on 18.085.3 MHz at 18:42 UTC on November 15, 2021, according to pota.app.