I'm planning a road trip in about a month from San Diego to San Antonio, I-8 to I-10, a trip I have not taken in a long time since I used to fly our plane on this route. If I recall correctly, there used to be repeaters linked most of the way, Zia or something like that. Does that still exist? Are there better choices to stay in touch on the road? Either 2M or 440 is fine.