Is your SI4438/SI4463 RF Module FCC approved for use in the USA?
I’m assuming that you are speaking about the Silicon Labs Transceiver?
FCC Part 90 Mask D, FCC part 15.247,
15,231, 15,249, ARIB T-108, T-96, T-67,
RCR STD-30, China regulatory
“Typically, these are non-standard frequencies or licensed frequency bands. The Si446x includes optimal phase noise, blocking, and selectivity performance for narrow band and licensed band applications, such as FCC Part90 and 169 MHz wireless Mbus.”
“The devices can meet worldwide regulatory standards: FCC, ETSI, and ARIB. All devices are designed to be compliant with 802.15.4g and WMbus smart metering standards.”
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