BBC Wales was heard on two frequencies when we lived in Southern Germany in the 1980’s. The outlet on 882 kHz using high-powered transmitters was naturally easily heard. 1125 kHz outlet located at Llandrindod Wells was more difficult. This transmitter served the Powys, Mid Wales which relayed the main BBC Wales service and BBC Radio. It also transmitted local programming. The main station in Cardiff responded with the two QSL letters and a coverage map for my reception reports.
The 882 kHz outlet can be easily heard under good conditions along the East Coast of North America, if you are far enough away from the side channel interference from WCBS etc.