CC1352R: CC1352R: Questions regarding the PHY ID 132 bandwidth

Hi,

- What is the 6 dB bandwidth of each channel using this PHY ID? I couldn't find this information in the documentation.

l don't have that information, but you would need to follow the advice in these two threads:

• https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz-group/sub-1-ghz/f/sub-1-ghz-forum/764134/cc1310-fcc-testing-with-easylink-longrange-dsss
• https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz-group/sub-1-ghz/f/sub-1-ghz-forum/800142/launchxl-cc1312r1-cc1312

The App Note discussing frequency hopping for FCC compliance can be found here:

SWRA529 (TI 15.4-Stack Frequency Hopping Mode FCC Compliance): https://www.ti.com/lit/swra529

Information on the WB-DSSS PHYs can be found here:

SWRA696 (Wide-Band DSSS Mode for FCC Digital Transmission Systems Using CC13x2): https://www.ti.com/lit/swra696

- Is it possible to change any configuration to increase the channel spacing and achieve a bandwidth greater than 500 kHz per channel? I am willing to sacrifice the number of channels, but I cannot change the data rate or the frequency of Channel 0.

Please see the TI 15.4-Stack Documention for custom PHY settings: https://dev.ti.com/tirex/explore/content/simplelink_cc13xx_cc26xx_sdk_8_30_01_01/docs/ti154stack/html/ti154stack/ti154stack-overview-cc13xx_cc26xx.html#custom-phy 

Your easiest options would probably be using the WB-DSSS mode or frequency hopping, or lowering the Output Power setting until you meet that FCC restriction.

Regards,
Zack