Digital signals of SF CERS?

[rustyhodge]

I've been noticing blasts of digital signals on the SF CERS system. I thought it might be a changed control channel, but the scanner moves off it after 15-30 seconds.
Unfortunately, the scanner, BCD996XT, is located remotely so I can't easily see what freq/tg this is coming up on.

Anyone else notice this?

 

[Stealthguy05]

Do they come in pairs of two and have a squelch crash after them? I think I know what you're talking about.

 

[rustyhodge]

Not sure about the squelch tail, as the scanner seems to mute those.