The National Periodic Test, not conducted last year during the heat of the pandemic, is scheduled for Wednesday, August 11, 2021. The transmission will be through the network of PEP (Primary Entry Point) stations—not through the IPAWS network.
San Diego County Stations can validate the NPT using their normally assigned LP sources, like LP-1 KOGO 600 kHz and LP-2 KLSD 1360 kHz. Additionally, KPBS 89.5 MHz is considered a PEP station by virtue of its affiliation with NPR. SiriusXM Radio has also been authorized as a PEP source. But you don’t need to reconfigure your system to confirm the National Periodic Test if it’s working for normal RWTs and RMTs.