Trip to Baltimore

I took a day trip to Baltimore on Sunday, mostly to monitor M&T Bank Stadium. I wanted to see if there were changes to their frequencies, specifically if the stadium had switched to MOTOTRBO (their license indicates the change). Well, even though the license was changed last year, they continue to operate on analog frequencies, as does the Maryland Stadium Authority, which uses frequencies in the 453 MHz range (license). I did see at least one employee with a MOTOTRBO handheld, but he was using it in analog mode. This may indicate they are going to switch to TRBO next year.

I found the talkgroups on the Baltimore P25 trunked system that the police and fire units assigned to the stadium were using. Police were on talkgroup 9111 for inside units, and 9134 for outside units. Fire was on talkgroup 9019.

In other Baltimore scanning news, the National Aquarium has changed some of their subaudible tones from CTCSS to DCS. Here are the updated listings:

461.1000 [ d134] National Aquarium - Visitor Services/Admission (R)
464.4750 [173.8] National Aquarium - Engineering/Housekeeping/Gift Shop/Education (R)
464.8250 [ d245] National Aquarium - Security (R)
464.9750 [  77.0] National Aquarium - Biological Programs (R)

The Aquarium's license also indicates that they may be switching to MOTOTRBO in the future.

For all the latest finds, see my Baltimore page.