Greetings @fisherman !
Thanks for taking the time to leave a post about the signal issues you've been having...this sounds quite disruptive! Since posting, has the situation improved? If not, can you kindly confirm which City and Province you are located in? Have you made any recent changes to your set-up?
Sometimes, a simple reboot of your modem may do the trick! All you need to do is unplug the power cord and coaxial for about a minute, and then plug everything back in, nice and securely. Once your modem has finished rebooting, try testing it out once more and let us know if the problem continues.