I'd like to buy the CTCSS for the SR-955HPC, where can I buy one? Shawn April 24, 2017 15:42 The CTCSS module can be purchased right on our website. Here is a link directly to the product page: http://strykerradios.com/store/ctcss-module-for-stryker-sr-955hpc-10-meter-radios/Thank you! Related articles How to use CTCSS with the SR-955HPC In what country is the SR-955HPC Manufactured? Installation instructions for the CTCSS Board SR-955HPC Setup Guide Can I power the 655 with a cigarette lighter adapter? Comments 0 comments Article is closed for comments.