While one can’t go home again, sometimes it’s nice to visit. My semi-annual return to Southern California this week was filled with great time with family, seeking out new experiences and reliving fond memories. Turning on the radio on my way home from the train station tonight sent me back to my college years, more than 14 years past.

I first tuned into KPBS, but after a minute of their evening classical programming, I spun the proverbial dial to 91X (XETRA 91.1). The last few minutes of their “Loudspeaker” program reminded me of San Diego’s local music scene, which I only was able to sample briefly after college before I moved away. I was a little surprised to hear what sounded like profanity during one of the songs, but I quickly reminded myself that 91X broadcasts from Tijuana into San Diego.

I was served another reminder of 91X’s cross-border origin when the disc jockey announced that regular programming would be interrupted for “The Mexican National Hour,” which typically airs on Sunday evenings.

I was surprised by what I heard. The Spanish-language “La Hora Nacional” sounded much better than it did 15 years ago. Back in the day, the show sounded like it was initially recorded in an empty gym and relayed to local station via shortwave before it was played back on 91X on a shoddy, beat-up tape. It sounded echo-y and awful, and I would quickly turn to another channel until the alternative music returned (or “Loveline,” but that was a different time).

Although I was only able to understand a portion of the show (show archive), the current “La Hora Nacional” sounded reasonably entertaining (for a 77-year-old government-produced program geared to promote national unity among other things). It featured an upbeat set of hosts discussing a variety of topics. It is something I may seek out and listen to later.

Hearing “La Hora Nacional” brought back other memories of listening to 91X in college. After studying late at the library, I would often be on the road home at midnight when the station was obligated to play the Mexican National Anthem (conveniently and simply named “Himno Nacional Mexicano”). I don’t why the station chose the version it did, but they would play an instrumental version of the song that lasted about four minutes. One of the TV stations broadcast a version that featured children singing, but the radio version was about four minutes of the anthem melody repeating over and over until you thought it was finished and then it would repeat a couple more times.

The song isn’t quite an earworm, but it was fascinating listening to it to see how many times the melody would repeat. It also became a bit of a challenge for me to see how far I could drive while the anthem played. I joked I could get home without speeding in the time it took for the song to play, but I never made it.

Since I moved away from San Diego, I would occasionally try to tune in for the Mexican National Anthem, but 91X only plays it over the air and not on their Internet streams. I was finally able to tune in for the nightly event about a year ago, but it was a bit different and shorter than in years past.

As someone who has loved radio for decades, I get a kick out of the tradition of U.S. stations playing a patriotic song as they signed off, or signed on, for the day. It is something that has definitely gone by the wayside (unless you’re Adult Swim and air an off-kilter sign-off).

While U.S. stations moved away from the sign-off tradition, the Canadian Broadcasting Corp. still started and ended its broadcast day with “O Canada,” during the years I lived in Michigan. The CBC has since started broadcasting around the clock, so it too has ended this tradition.

The version of “O Canada” that I saw was an elaborate production with a bold orchestral arrangement of the song set against a wide array of images evoking the Great White North and its diverse population (YouTube video posted by eastest566). It’s something I still enjoy seeing and listening to years later — even the cheesy prelude segment about how essential the CBC is.

In the years since I’ve become a volunteer DJ, I taken to keeping the tradition alive in a small way. Since my weekly program ends at midnight, I nearly always end with a jazzy performance of “The Star-Spangled Banner.” I certainly don’t do the specific jargon one uses when actually ending the broadcasting day (because I’m not), but I like to end with Duke Ellington’s take on the National Anthem although I sometimes switch to versions by Bonerama or Branford Marsalis and Bruce Hornsby.

Who knows? Maybe there’s someone in a car listening to my show trying to see how far they can get by the time the song’s over.