It's not HF. It's VHF Lowband FM. It really sounded great back when the infrastructure was Motorola MICOR repeaters with Motorola simulcast. Unfortunately the new kludge is apparently a bit beyond the technical capacity of the people who maintain it, so you get a poor end user experience as a result of it. It's all designed and engineered by people in Sacramento who have no concept of the real-world situation where this equipment gets installed.
Thats why Temecula was broken off onto the brown. They couldn't make the simulcast work with Santiago Peak.
Since CHP Oceanside never joined the RCS, it is a high probability we reused the TG for someone else. (Working remotely, and I don't have access to the master list at the moment.)