Metro-25/MTA MRRS P25 System

CqDx · Nov 10, 2018

I started picking up the new MTA-PD 700 MHz system while spending some time on Connecticut south shore today, right across from Oyster Bay. Signal strength is not the greatest but Unitrunker was able to get a good decode. No affiliations or voice traffic heard.

According to CAPRAD this should be Zone 1 - Nassau County simulcast.
Interestingly the system ID is just "one up" from the METRO 25 system.

System Type: P25
System ID: 26E
WACN: 91FE8
RFSS 25
Site 4
770.94375 (Control)
770.20625 (Alt Control)
773.54375 (Alt Control)
773.81875 (Alt Control)
774.28125 (Alt Control)

GTR8000 · Nov 10, 2018

Nice find, I'll get this going in the database tonight.

Do me a favor and post any other info you're decoding, such as the band plan.

APX8000 · Nov 10, 2018

How far north are they building it ? Up into Orange, Dutchess, etc ?

Sent from my iPhone using Tapatalk

GTR8000 · Nov 10, 2018

Yep, they have sites licensed all the way up to Port Jervis and Rhinebeck.

GTR8000 · Nov 10, 2018

https://www.radioreference.com/apps/db/?sid=10310

Zone 1 is listed as Nassau and Suffolk in CAPRAD. Obviously at this point we're not sure which physical subsites are on the air, I'm sure as locals start to check it out, we'll get a clearer picture. Note that these initial five frequencies are from the state allocation WPTZ779 blanket license, and are not licensed normally per-site.

They also have two licenses for a bunch of sites in Suffolk (WQOZ578 and WQOZ581), but no corresponding licenses in Nassau, so it remains to be seen how the system will be configured ultimately.

GTR8000 · Nov 10, 2018

These are the four frequencies licensed in Suffolk County:

769.83125
771.33125
772.53125
774.70625

hakwye8518 · Nov 15, 2018

I'm out by islip airport and I'm not receiving anything.

dave3825 · Nov 15, 2018

I was at the Nassau Suffolk line (Farmingdale) yesterday and did not receive anything either. Might be in Levittown next week and will try there also. Can anyone out in Nassau, or south shore of CT confirm the cc is still active?

Thanks

dave3825 · Nov 16, 2018

Anyone picking up a control channel?

hakwye8518 · Nov 17, 2018

I've been searching the fcc database and haven't found any licenses for locations in nassau county.

GTR8000 · Nov 17, 2018

hakwye8518 said:
I've been searching the fcc database and haven't found any licenses for locations in nassau county.

Nor will you, since the frequencies so far are all from the State's allocation (SL), which are not licensed per-site like normal SY licenses using general allocations are. The states can essentially do whatever they like with the block of 700 MHz frequencies that were allocated to them, they need only coordinate amongst themselves to prevent interference with neighboring states.

hakwye8518 · Nov 18, 2018

so why get fcc licenses for suffolk, nyc, upstate and not nassau

GTR8000 · Nov 18, 2018

Because they licensed frequencies from the general pool years ago, prior to working out an agreement with the state to use frequencies from the state's pool.

Frankly, a lot of this is academic, as word on the street is that all talkgroups will be encrypted on this system.

hakwye8518 · Nov 19, 2018

do you have a frequency range for the state license pool

GTR8000 · Nov 19, 2018

There are 96 total 12.5 kHz channels allocated to the states, but they are not contiguous. Your best bet is to just search 769 to 775 MHz in 6.25 kHz steps and see what's out there. The SysID has already been identified as 26E.

pro106import · Nov 19, 2018

I can receive the control channel here on 770.94375, although comparatively much weaker than other NYC and Nassau systems I receive. I am using an 8-element 800mhz. yagi which has the beam fixed at NYC. Probably not strong enough at the moment to decode the system. But judging by other signals, propagation is not the best this morning, as I am not receiving NJSP system right now either and I hear them about 75% of the time.

Bob
Milford, Ct.

GTR8000 · Nov 19, 2018

Here is the complete list of the 96 frequencies allocated to the states:

Code:

769.15625	769.40625	769.65625	769.90625
769.16875	769.41875	769.66875	769.91875
769.18125	769.43125	769.68125	769.93125
769.19375	769.44375	769.69375	769.94375
769.20625	769.45625	769.70625	769.95625
769.21875	769.46875	769.71875	769.96875

770.15625	770.40625	770.65625	770.90625
770.16875	770.41875	770.66875	770.91875
770.18125	770.43125	770.68125	770.93125
770.19375	770.44375	770.69375	770.94375
770.20625	770.45625	770.70625	770.95625
770.21875	770.46875	770.71875	770.96875

773.03125	773.28125	773.53125	773.78125
773.04375	773.29375	773.54375	773.79375
773.05625	773.30625	773.55625	773.80625
773.06875	773.31875	773.56875	773.81875
773.08125	773.33125	773.58125	773.83125
773.09375	773.34375	773.59375	773.84375

774.03125	774.28125	774.53125	774.78125
774.04375	774.29375	774.54375	774.79375
774.05625	774.30625	774.55625	774.80625
774.06875	774.31875	774.56875	774.81875
774.08125	774.33125	774.58125	774.83125
774.09375	774.34375	774.59375	774.84375

GTR8000 · Dec 20, 2018

Control channel 770.15625 for Zone 2 (N Westchester and Putnam counties) on the air

pro106import · Dec 20, 2018

"Control channel 770.15625 for Zone 2 (N Westchester and Putnam counties) on the "

Nothing on that CC here in Ct., however, I am still hearing the 770.94375 CC here.
Bob

radioman2001 · Dec 20, 2018

Quote"
Frankly, a lot of this is academic, as word on the street is that all talkgroups will be encrypted on this system.

I can now confirm this, but the site pictures I have are too large to download here. The essence of the pic is Harris SecureSync terminal attached to the base station or repeater.

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