I also heard a looped test count on Orange-1 this afternoon using the 162.2 tone. The test counts were stating the test was on Gold and giving the call sign for the Gold. Nothing was being transmitted on the Gold. I'm not sure what that means. Maybe nothing significant and they were just using a loop that they had from previous work on the Gold.
Yep I can confirm the San Diego 87 units are still on 162.2 PL on Orange 1 as of this afternoon. Are you absolutely sure you heard "87" units with the 186.2 PL? The reason I ask is because Southern Division Gold 2 (For Santa Fe Springs, 83 units) shares this frequency and uses the Southern Division PL tone, which is 186.2 PL. On a good day, I can hear bleed over from Santa Fe Springs units on Orange 1, since I don't monitor it with tone squelch enabled. Driving up the five, by northern San Diego county I can routinely hear the Santa Fe Springs units.
Low band is notorious for "skip" propagation, and CHP has in the past received interference from as far away as Missouri highway patrol. So it's anyone's guess why they would put two offices that are only 100 miles apart on the same output frequency, because in lowband terms that's pretty close.
No, the 87 units were on Border Blue-1 like I said. I did say that Orange-1 had a tone of 186.2 and that is explained by your post. I didn't realize Santa Fe Springs was using the same frequency so when I set Orange-1 to search for PL, I heard Gold-2.
Everything has returned to normal for a couple of days now with the 87 units back on Orange-1 with their normal 162.2 tone.