ARRL have issued a  post about 432-438 MHz P-Band SAR allocation.

Oddly they say: "ARRL Chief Technology Officer Brennan Price, N4QX, said SAR activity has not been found to be a significant problem to Amateur Radio activity on the 70 centimeter band." But there have not been any SAR satellites operating in 432-438 MHz so given the complete absence of any transmissions it is not surprising that there have been no significant problems.

The first SAR satellite in this band is AIST-2D which was launched a few days ago on April 28, 2016. See http://www.arrl.org/news/view/no-need-for-panic-regarding-synthetic-aperture... In 2002 the ARRL reported the FCC's WRC-03 Advisory Committee and the National Telecommunications and Information Administration's Radiocommunications Conference Subcommittee determined that SAR transmissions could periodically impact amateur reception and even held "the potential for significant interference."

73 Trevor M5AKA