Years ago when my friend set up his repeater, [nothing to do with D-Marc] where there are only 2 TG's. he chose 3175 for one TG because the repeater was on 443.175. That TG was called FLA DMR 2. Later on, D-Marc decides to use 3175 TG for SW. Since our users first assigned 3175 to say FLA DMR 2, when they tried to enter that same TG in their radios for the D-Marc system to say SW, they couldn't, as it was already taken. So anybody using 3175 on D-Marc had to see FLA DMR 2. We had 3175 first. Why D-Marc stole it, I'll never know, since the Plantation factory is 10 miles from our repeater.