Bob Brown, NM7M, of Anacortes, Washington, passed away Sunday, May 23, from cardiac arrest. He was 87. Brown, the husband of former ARRL Northwestern Division Director Mary Lou Brown, NM7N (SK), was known worldwide for his contributions to the propagation studies on 160 meters. Brown wrote 12 articles for the ARRL from 1998-2001 that appeared in QST, QEX and NCJ, most of them -- such as this December 1999 QST article -- dealing with propagation and contesting on the low bands. He also authored an HF propagation tutorial that is available online. Brown was retired from the University of California where he was a physics professor at the Space Sciences Lab (SSL) in Berkeley; he also served as interim dean of UC’s graduate school. A memorial service is planned in Anacortes for Wednesday, May 26. A private burial service is planned for a later date.