iHeart has been cutting back on HD2 nationwide -- they previously had a soft AC "Breeze" format on HD2s around the country that's now gone.

The Breeze had been carried on WXXM-HD3 here in Madison, along with a rotating set of formats on WXXM-HD2 that frequently had technical issues (my favorite was the 2 months of dead air for a Christmas format; the song listings faithfully updated, but no songs were ever audible).

Both of those are gone and WXXM is now down to just HD1, but iHeart's other Madison stations continue to offer HD2 stations.

WMAD-HD2 airs iHeart's Coffee House channel. I would listen more often, but the frequent HD signal dropouts in Madison are too annoying to put up with.

WIBA-HD2 feeds an oldies format to a translator on 100.9 FM. On a related note, it's the only HD2/3 station in Madison to show up in the ratings.

WZEE has Air1 on HD3 to feed a EMF-owned translator. WZEE's HD2 inexplicably carried a classical music format for years (classical music is already offered on WPR’s WERN and WERN-HD2), but recently switched to iHeart's crooners channel "The Standard" (https://www.iheart.com/live/the-standard-6784/). The HD2 station image updated to show "The Standard," but the displayed song title, album image and artist info are still fed from the old classical format, so you hear Sinatra and see "Toccata and Fugue in D Minor" for the song title. Engineering at the iHeart cluster in Madison seems like it's been a struggle for a while.

Audacy has two HD2 stations in Madison - Channel Q on WOLX-HD2 (Channel Q just laid off their air staff last month) and "Live from Studio M" on WMMM-HD2.

I often check out the Chicago HD2 stations when I'm in town, and got a good idea of why they are virtually non-existent in the ratings -- too many signal drop-outs!

I happened to be driving back from Chicago while the Illini were on WLS a few weeks back and thought I'd try listening to them on WLS-HD2. I only made it maybe 6 or 7 miles from downtown on the Eisenhower (didn't even make it to Cicero!) before WLS-HD2 kept dropping out and I had to switch over to WLS-AM.

I've had similar experiences trying to listen to the Loop on WKQX-HD2 -- the signal cuts out so often (and takes so long to come back), that it's just too annoying to listen to.