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 In what country is the SR-955HPC Manufactured? Channel selector sometimes skips and doesn't feel as firm as I expected What are the A B C D E used for? Comments 0 comments Article is closed for comments.