- Mar 26, 2014
- Marshall County, Illinois
Hello all. I have not yet upgraded to a digital scanner yet, and I monitor ISPERN on 155.475. Sometimes I will hear D8/D6 make an announcement and it will be crystal clear, other times, it will be scratchy, and yet other times, it will seem like its over-modulated and you get the "digital" sounding voice that seems like its hitting me like a ton of bricks. I'm assuming ISP uses different towers to broadcast announcements so all of their cars can hear. Which leads me to wonder, do the STARCOM towers also broadcast 155.475 on VHF-HI along with the digital channel, and if there is a car affiliating with tower, it will broadcast? I'm thinking that the closest tower to me doesn't always have a unit affiliating, so it won't broadcast 100% of the time, thus the different signal strengths I am experiencing. Any thoughts?