Can anyone comment on how RDS is supposed to work?
The RX400 manual (p. 311) is rather cryptic about RDS ....
"If the radio receives a radio text from RDS station, "MSG" appears on the display. Push the "TEXT" button, and a text message is displayed.
If the entire the message is not displayed, ">" will appear on the display. To display the rest of the message, push and hold the "TEXT" button until you hear a beep.
After the entire message has been displayed, the message will disappear.
In case a text message is not accepted on the display, you can push the "TEXT" button and hold it to display the rest of the message.
When the system can show the station name, "RDS" appears on the display. Each time you push the "TEXT" button, indication on the display changes from the band to the station name, a radio text in this order. After 6 seconds passes, indication returns to the band."
So I think part of the confusion is that this one TEXT button takes on several different functions depending upon whether the RDS consists of the station name, RDS text short enough to fit on one line, or longer RDS text that requires multiple lines to fit. And the button's function changes if you press it once, or hold it until beeps. Very confusing. And I still can't seem to make it show me the entire RDS text string for stations that provide song title, artist, and their station ID.