Spvm montreal police. "superviseur seram"??

kirk23 · Jun 2, 2015

I know SERAM is acronym for the new SPVM / SIM radio system...
But certain SPVM police cars they have SERAM in big white letters across the rear side windows. & in 1 case the 22-10 was marked "SUPERVISEUR SERAM" witch I found odd because the SUPERVISEURS are usually the xx-86's / xx-86's

Does anyone know why some of the cars are marked SERAM??

quebecradioguy · Jun 2, 2015

I've already seen in others police services marked like that and it's was because the user of this vehicule had more training on the new system that all other officers/supervisors.

I don't know about the exact reasons for montreal tho...

maximel · Jun 6, 2015

Hello

kirk23 said:
I know SERAM is acronym for the new SPVM / SIM radio system...
But certain SPVM police cars they have SERAM in big white letters across the rear side windows. & in 1 case the 22-10 was marked "SUPERVISEUR SERAM" witch I found odd because the SUPERVISEURS are usually the xx-86's / xx-86's

Does anyone know why some of the cars are marked SERAM??

The supervisor have the both radio for dispatch and analog radio (seram and old).

And a third for the analog operation channel (2,7,8,9,10)

I'ts testing the new system. If you listen, sometime you hear the guy talking in delay. when i talk on SERAM, the analogue system enter in the seram radio microphone and loop back. The digital system encoding made a 50 to 80 ms delay.

Max

kirk23 · Jun 7, 2015

Thank you / merci guys..

Let's see if they can get it to work properly This time..

quebecradioguy · Jun 8, 2015

maximel said:
Hello

The supervisor have the both radio for dispatch and analog radio (seram and old).

And a third for the analog operation channel (2,7,8,9,10)

I'ts testing the new system. If you listen, sometime you hear the guy talking in delay. when i talk on SERAM, the analogue system enter in the seram radio microphone and loop back. The digital system encoding made a 50 to 80 ms delay.

Max

Hi, since you look like be using the SERAM, can you tell us about the quality versus the old Analogue system? I know that the coverage sould be better but usally, P25 voice quality is worst than Analogue or EDACS.

Thanks a lot!

plaws · Jun 11, 2015

Remimercier said:
Hi, since you look like be using the SERAM, can you tell us about the quality versus the old Analogue system? I know that the coverage sould be better but usally, P25 voice quality is worst than Analogue or EDACS.

Thanks a lot!

It seems to vary in my experience, listening on consumer-grade scanners. Sometimes it's very clear and sometimes it's awful. The folks in Chicago, on scanners, have a very hard time with the STARCOM21 statewide system on sites that multicast to several transmitters. I don't know if there are problems with actual commercial radios.

hermite · Aug 22, 2015

Hello. My understanding is that SERAM will all be encrypted (AES 132) on APCO25. They have already started on Simulcast 772006.250. What's the point in sound quality if we can only hear garbage..?

quebecradioguy · Aug 22, 2015

hermite said:
Hello. My understanding is that SERAM will all be encrypted (AES 132) on APCO25. They have already started on Simulcast 772006.250. What's the point in sound quality if we can only hear garbage..?

The Fire departement will be in clear. there is also parking enforcement in clear

hermite · Aug 22, 2015

Tks for the info, but I thought SPVM and SIM were both migrating to SERAM. Just a matter of time i guess?

quebecradioguy · Aug 22, 2015

Yes i dit talk to a SIM captain last week and he said the SIM migration is a matter of days... SPVM will probably wait until SIM says its worth changing...

VORTAC · Aug 22, 2015

The East part of the island is now encrypted and is no longer heard on the old system. Gradually, the whole services will be on SERAM (AES 256).

For the SIM, no date has been issued.

hermite · Aug 24, 2015

Tks for the follow-up VORTAC.

For SERAM 1490E-CFF, I am noticing no Tags & Labels associated to the following TG:

60001, 60012, 60013, 60017, 60294, 60300. Who would be updating these TG?

Also, once SPVM is fully migrated to AES, what happens to the Live Audio feeds on RadioReference?
Who owns the receivers of the SPVM LiveAudio feeds anyways?

I'm fairly new to APCO and Trunking, so please bare with me

Tks

quebecradioguy · Aug 24, 2015

Those TG are not in the database... Sometimes, when it's the agency who own the feed, they continue to provide feed via the dispatching console. for SPVM i dont think they will do this kind of thing.

The feed will probably die.. the sad truth.

If you have question about APCO and trunking, feel free to PM me !

quebecradioguy · Aug 24, 2015

Hermite, we need to be friend to PM. I'm not able to answer you. I sent you a friend request

VORTAC · Aug 25, 2015

hermite said:
Tks for the follow-up VORTAC.

For SERAM 1490E-CFF, I am noticing no Tags & Labels associated to the following TG:

60001, 60012, 60013, 60017, 60294, 60300. Who would be updating these TG?

Also, once SPVM is fully migrated to AES, what happens to the Live Audio feeds on RadioReference?
Who owns the receivers of the SPVM LiveAudio feeds anyways?

I'm fairly new to APCO and Trunking, so please bare with me

Tks

Groups 60001-60020 are reserved for the Interop.

Sadly, yes, all SPVM feeds will be dead after the change.

VORTAC · Aug 25, 2015

And, 60294 is reserved for control traffic (media, info traffic)

Spvm montreal police. "superviseur seram"??

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