Unkown DMR/NXDN Underground TTC

Anyone else notice lately of a digital signal on 421.7375 in the ttc subway? I don't usually have DSD+ with my scanner audio cable as I only have my SDR for TETRA monitoring. Yes I know i could use virtual audio cable but was wondering if anyone else was curious to find out.
http://prntscr.com/jji0a6

This maybe?

https://www.radioreference.com/apps/db/?sid=6663

Dave

I entered it into my TRX-1. I just sat there saying it was a signal but wouldn’t tell me anything about the NAC.
I’ll get proper cables for the next trip and see where that goes.

RCMP and CSIS have always had a UHF frequency transmitting in the subway, so it would make sense that they still do now. Maybe a SCAT site.

Perhaps RCMP O Division Site 37 is the Single Channel site?

I caved in on my way home and used the last public version of DSD+ and ofcourse its not reliable as it reported both NAC ID's as 137 and 73D. There was two frequencies. I also had my TRX-1 and used the cc dump to log file and 421.7375 is a Control channel reporting NAC 36F and site 37 unlike DSD+. lone channel no sub channels or anything and no activity.

Now. as for 421.9375 which only pulses when theres transmissions. Encrypted but in my recordings even the scanner identifies it as 73D it seems to be using TG=1 as well as DSD+ i Think this one is a p25 conventional system.

421.7375 NAC 36F is the RCMP system, 100%.

421.9375 is the CSIS frequency that used to be repeated in the subway (seemingly still is?).

So there ya go.