summit1 said:
I often hear them say "go to 3" which I'm sure is a car to car freq but I've never been able to find it....I'm wondering if the freqs at the top of the table (labeled "MO" for mobile might be car-to-car"
No, the frequency has nothing to do with this particular situation. It is the Talk Group (TG) that you need. Each frequency is used by
ALL agencies using this site as determined by the
Control Channel (CC) assigning the frequency which is constantly changing. On one individual frequency you may copy UHP Summit and two seconds later that frequency will be Grantsville PD (I pick up all of Tooele County's traffic from site 011 as well). This is where the "Tracking" comes into play!
The TG determines the individual
agency. Take your dilemma from above. Talk Group ID (TGID) 4544 is assigned specifically to the UHP Summit cars for car-to-car (c2c) traffic, TGID 47840 is assigned to Summit SO cars for c2c, TGID 4448 to UHP c2c Salt Lake, TGID 4576 to UHP c2c Tooele, and so on. Any one of these TGs could be on any frequency at any time depending on the CC assignment.
When the UHP cars are traveling from one duty station to another such as Summit County cars going into SL, they know the different radio coverage areas as "Zones" on their radio set ups in their cars. If a Summit UHP Trooper wants to go c2c with a SL Trooper, IN THE SALT LAKE COUNTY AREA, he must use the SL Zone on his radio which puts him into TGID 4448. The Summit UHP Trooper will still be going to "Channel 3" but in reality, he is using a different TG.
It is rather confusing when you are beginning to get into this hobby, but once you understand the basics it becomes interesting, fun, and time consuming. Go
here for a discussion on radio system trunking. Be sure to scroll all the way down for the entire discussion.
Now, about the "extra" frequency you have "found" on Nelson Peak. I don't have it programmed into my scanners. I never noticed I didn't have it. I am not aware of any traffic that I have missed because of it.
Oh, and it is a "standard" that when they say, "Go to 3," they mean Channel 3 on their radio and it is always c2c...usually...well, it is a standard for the UHP. Some of the agencies use a different "Channel" for their c2c traffic, but in Utah that is rare and a couple have more than one c2c Channel (SLSO for instance). For the Summit SO, c2c traffic is on Channel 3, but their Channel 3 is not the same as the Summit UHP Channel 3 because they are different TGs.