Montreal - Difficulties with Acces COM 2 and CTM 03

[martinm1000]

Hi,

I'm using Freescan to upload those 2 systems to my bcd 396xt, but they don't want to work...
I'm in Search mode in those 2 systems, but they don't open when there are transmissions.
But if I hold on their frequencies, I can hear communications.

Other trunking systems seems to work without problems, so I have no idea of the problem I have...

Who has those 2 systems working in the montreal area ?

Scanner Frequencies: Acces Communications 02 Trunking System, Montreal, Quebec
Scanner Frequencies: C.T.M. 03 Trunking System, Montreal, Quebec

 

[slypx]

Bonjour Martin, the reply is in English for everyboby purposes, if there is something you don't understand, PM me.

To make sure I reproduced correctly your situation, I redownloded these systems from the DB on my GRE PSR-600 :

CTM 3 is fine, I decode at 75 % on 452.6750 with SID 5127

As for Acces Com 2, I'm too far for that 900 Mhz system to get where I am. I see it on 936.8625 at only 15 % but I see TG's from tonight's firework site.

Please try monitoring theses frequencies one by one in the right mode to see if you can decode any data.

Good luck !

 

[slypx]

More monitoring proof you right. CTM 3 was wrong it's been fixed. But CTM is playing with the bandplan on these short term rental system that it's hard to follow on a day to day bas, might be wrong again next week ... we'll monitor.

Thanks a lot

Looking at Acces Com 2 ...

 

[DaveH]

More monitoring proof you right. CTM 3 was wrong it's been fixed. But CTM is playing with the bandplan on these short term rental system that it's hard to follow on a day to day bas, might be wrong again next week ... we'll monitor.

Thanks a lot

Looking at Acces Com 2 ...

In the DB there are systems where the base frequency has been
"adjusted" to make the offset 380; for example system 5636
(Acces 01):

Scanner Frequencies: Acces Communications 01 Trunking System, Montreal, Quebec

I suspect this is to allow older scanners which only allow one
set of base/offset/step to be programmed (with offset fixed at
380), to track the system. This works as long as only one range
is used by the system. 455.000 is not the "real" base frequency
as no repeater outputs would be assigned to 455-460MHz.
In reality the channels shown in are range 2 or 3, and who knows
what range 1 really is.

I would prefer the database to show the "real" base/offset, in the
case of above 460.000/580 (or 460.250/590 for lack of complete
channel info), plus a note that someone could use 455.000/380.

Similiarly, the base/offset for System 591f which has been corrected,
(447.000/380) was not originally correct, and can' t work with two
ranges anyway.

I'm a bit surprised that the operator would "play" with the bandplan;
have the actual channel numbers for the frequencies changed? I
have a bit of channel/frequency data for system 5127 going back to
2005, when I last logged it from Ottawa.

Dave

 

[VE2ZPS]

As for Acces Com 2, I'm too far for that 900 Mhz system to get where I am. I see it on 936.8625 at only 15 % but I see TG's from tonight's firework site.

This system is working fine, besides the usual TGID, the following are presently in operation for special events:
(with continuous transmissions both yesterday and this morning)

16960

17120 (competition in St-Lambert)
17184 (commercial event on Ste-Catherine)
48656 (VIP Transportation JFL Festival)
48960
48944

48816 - 48832 - 48848 - 48864 - 48880 - 48896 - 48912

 

[martinm1000]

Well it is still not working, on both systems; But I can hear a lot of coms on the frequencies...

I should also say that if I get to Acces COM 2 ctrl channel and hold on it, I can see the Groups ID used in those coms.
Does this mean that we are missing info on the base stuff or something else maybe ?

 

[martinm1000]

Working !

Yes !!

I was able to get it to work by changing it to a Mot 800mhz Type 1 in FreeScan (bcd 396xt).
It was originally a Mot type II.

Any idea where the problem was ?

 

[DaveH]

By the way Slypx (and all) for system 591f (CTM 02) which I have
been "listening to" when the propogation is right over the past 4 years
or more...the channel plan appears to be incorrect. I can explain in
this thread, or start a different discussion, or discuss off-line.

Last time I logged the system was about one month ago. Have all
the frequencies below 460MHz been taken off the system?

Dave

 

[martinm1000]

Hi DaveH, what can we listen to on CTM 02 ? Got any ids ?

 

[slypx]

By the way Slypx (and all) for system 591f (CTM 02) which I have
been "listening to" when the propogation is right over the past 4 years
or more...the channel plan appears to be incorrect. I can explain in
this thread, or start a different discussion, or discuss off-line.

Last time I logged the system was about one month ago. Have all
the frequencies below 460MHz been taken off the system?

Dave

Thanks you very much for your information and for the head up in your first post, we'll look into it ... We appreciate.

My brain went beserk in the intern translation (french to english) in regard of the band plan. I meant the CC change not the band plan. In the last hour it went from one CC to the other ... As for the band plan, we (Vortac and myself) are in a trial and error process to resolve this ...

This is the most rented system as a per event rental in Montreal ...

As for the freqs below 460, I'll have Vortac look into it, he's closer ...

PM me for the whole explanation if you want.

 

[DaveH]

Thanks you very much for your information and for the head up in your first post, we'll look into it ... We appreciate.

My brain went beserk in the intern translation (french to english) in regard of the band plan. I meant the CC change not the band plan. In the last hour it went from one CC to the other ... As for the band plan, we (Vortac and myself) are in a trial and error process to resolve this ...

This is the most rented system as a per event rental in Montreal ...

As for the freqs below 460, I'll have Vortac look into it, he's closer ...

PM me for the whole explanation if you want.

I can PM you later, meantime I can say: unless something signifigant has changed
in the last year, except adding or dropping channels, the bandplan which was
there until recently, appears to be correct:

Base=460.000, Offset=380, Step=25.0
Base=452.250, Offset=702, Step=25.0

If any channels below 452.250 are in use in the second range (or third range,
we can't be sure because of gap in channel numbers), the second Base/offset
could be changed to:

Base=451.000, Offset=652, Step=25.0

Regarding Martin's question: I can dig up a list of TG numbers only, but mostly from
2008. I don't get a chance to ID the actual users, because the right conditions are
rare and do not last a long time. Also, it is usually early morning, sometimes late
night, which is not the best time to hear daytime users. Best thing is to put the
scanner on ID search and see what turns up. There must be others who can hear
this system regularly, I am only a "chance" listener.

Dave

 

[VORTAC]

Last time I logged the system was about one month ago. Have all
the frequencies below 460MHz been taken off the system?

Dave

Currently, yes.