The Mystery Signal on 720 kHz

On January 8th this year (already January 9th UTC),  I found myself on the road between my home QTH and the small town of Story City, Iowa. My Mom was convalescing there after some surgery, and I decided I would drive up there and say hello at least, even if it was getting on the road after 8 PM local (0200 UTC). On the way up, I turn on the trusty Yaesu FT-857D I have in the truck and try to tune in 720 AM. The Chicago Blackhawks are getting ready to play, and I figure I’ll be able to catch most of the first period during my drive, but what I heard was definitely not the hockey game.

While WGN was in there some of the time, they were never very strong, and occasionally not there at all. What I did hear though was rock music. Instead of the familiar voices of John Wiedeman and Troy Murray, I heard a hard rock cover of Bob Seeger’s Turn the Page, probably by Metallica. Later on, as I was driving into Story City, I heard the Scorpion’s No One Like You before I arrived at my destination. I never heard any station ID, and I had other family business to deal with on the trip home, but this should be easy to identify. Hey, it can only be one of so many stations, right?

The Likely Suspects

A night time pattern map of stations on 720 kHz.
A night time pattern map of stations on 720 kHz.

Thanks to the excellent Radio Time Traveller blog, I managed to track down this night time pattern map for 720 kHz. Let’s take a look at each of these stations and what we know about them:

WGN, Chicago. This is the station I was trying to listen to, and I can vouch for the fact that they were carrying the Blackhawks game that night.
KSAH, San Antonio. I have heard this station before, usually underneath the more dominant WGN, but occasionally even stronger. They have a Spanish sports talk format though, so I think they can be ruled out.
WRZN, Hernando, FL. Their news-talk format doesn’t fit the profile of the station I’m looking for.
KDWN, Las Vegas. Another station that doesn’t fit the format I’m looking for. In this case, they’re a news, traffic, and weather station.
KFIR, Sweet Home, OR. A news-talk station licensed to broadcast with 184 watts at night.

This leaves us with a handful of other possibilities, namely KUAI out of Hawaii, which is a classic country station, and another long shot shot: KOTZ.

The gray line map for January 10th, 0220 UTC.
The gray line map for January 10th, 0220 UTC.

KOTZ 720 is a small public radio station, broadcasting with 10 kw of power out of Kotzebue, Alaska. Unlike our other stations, its format is simply listed as “variety” on Wikipedia, which certainly doesn’t rule it out as a candidate. What’s also interesting about this possibility is the sunrise map, which puts the gray line squarely over the coast of Alaska at 0220 UTC, which coincides perfectly with when I heard this station. Was it KOTZ I heard that night? Well, maybe. It is a longshot at best, but it’s my best hope without having to leave North America.

I have contacted KOTZ about this, but I haven’t received a reply yet. I will keep you posted. Until then, I’d be happy to hear some feedback from other mediumwave DXers out there about any other possibilities I’m overlooking.