Received locally and via various SDR receivers. Mexico City taxi cab dispatch, YL dispatcher. Juanita on 26765 kHz AM 26.765 MHz AM 26,765 AM.
Radio taxi dispatcher's radio transmitter is properly warmed up, carrier showing up on 26764.95 kHz and then 26764.96 kHz. Tell-tale single tone end of transmission BLEEP or "Roger Beep". Radio taxi, Mexico, DF. Taxi cab on CB radio.
Band opening indicator, not sure how much power she's running or what sort of antenna she's using but her signal comes in almost daily.