In article . com,
wrote:

The Instrument rating PTS in section VI.B - (Precision approaches)
says:

"9. Selects, tunes, identifies, and monitors the operational status of
ground and airplane navigation equipment used for the approach."

So at least on checkrides you have a reference...

Ed

But, it doesn't say anything about listening to the morse code. Reading
"IHPN" on the front panel of the radio counts as "identifies" in my book.