RMQ = RQM

RMQ (Source: townofrangeley.com)

Getting nowhere fast trying to identify navigational beacon RMQ, I posted a message on the IRCA email list and quickly received replies that solved the mystery. It seems that navigational beacon RQM in Rangeley, Maine, has been identifying itself incorrectly as RQM for years! Go figure!

RQM transmits 25 watts from northwestern Maine, 354 miles to the north-northeast on 221 kHz.

By the way, some of the folks who responded to my plea for help belong to the NDB List. If I had been aware of the NDB List, I would have found the answer to my mystery because RQM's erroneous identification has been discussed a few times on the list. Anyway, I joined the list post haste.