On June 18, 2019 at 01:26, Ernie Gilman said...
The Harmony document says there's Dual IR frequency RF4CE remote control support. Haven't had a moment yet to look that up.
From Electronic Design, August 2010:
The latest remote-control technology, dubbed “Radio Frequency for Consumer Electronics” or better known as RF4CE, will be coming soon to a store near you. Courtesy of ZigBee, it’s now undergoing certification tests.
Nine years later and it may have come to the store, but it's not a household word yet!
The RF4CE remote control isn’t the typical infrared device found in the home. Instead, it’s an RF-based product designed to conform to ZigBee specifications as part of a wireless network. The ZigBee wireless network managing the RF4CE device is designated to be active on three ZigBee predefined channels—15, 20, and 25—from the ZigBee spectrum extending from channel 11 to channel 26.
...and I'm guessing from this that my search for IR codes to use with a URC remote won't get any help from this technology.