London Transit Commission using Morse codes?

[hotpocket]

I don’t know if anyone else has ever heard it, but from time to time when listening to the LTC channel (I can’t remember if it was Control or Buses), I hear what sounds like Morse code, followed shortly by a voice transmission. I didn’t know if anyone else had heard this, and if they knew what it could be? I’m almost wondering if it’s some sort of private call trigger or something like that

 

[BC_Scan]

It is possible you are hearing the repeater ID. That was a thing back in the day, back when we could hear ecomm on ProVoice. The repeaters would ID every hour on a certain frequency part of the trunk system. That's how we obtained all the IC callsigns issued. It was a requirement of repeaters to ID themselves in case of interference with adjacent channels in the days of wide band.

 

[Muxlow]

If you capture an audio sample and decode the beeps n boops it might decode as VFQ442. I think even the Middlesex County Fire channels every so often do a repeater ID like that also.

Chatham-Kent Fire does on their paging frequency. If you have a PL enabled you'd never hear it.

 

[gary123]

Technically ICAS requires a ID every 30 min. Although as mentioned this is starting to fade away especially on trunked systems.