It has to be that way for the repeater to work. You will be simplex when not tuned to a repeater frequency. 146.520 is a standard simplex frequency. I actually raised someone on that frequency on my way down to Ouray this past summer. He was quite surprised. I don't think we were even 10 miles apart.
Chris Hatfield, TLCA# 2768, KCØZAB
Ad Sales Manager, Toyota Trails/tlca.org