Mobile County what happened?

[Rick36695]

Up until August first or so I could receive Fire, EMT, and the Sheriff within Mobile county, now there is zilch. No fire, no EMTs, no State Troopers no nothing. I've notice RR upgraded several local businesses to DMR and NXDN, but so far no one has reported the county has encrypted all public service transmissions.

I have two scanners a TRX-1 and a 536 modded to receive DMR and NXDN both have been scanning 764-797mHz for three days straight but not a single hit on either scanner anyone know what's happening in Mobile county Alabama. The MPD and hospitals went encrypted years ago but everything else has been in the clear up until August.

To repeat my question does anyone actually know what is going on in Mobile? Have agencies encrypted? Have they migrated to other frequencies? Have they switched to something other than P25? What is going on?

 

[WX4JCW]

last time i went through they were on, all police are encrypted, some fire was i think

 

[JamesBrox]

I'm still hear the state troopers on their conventional frequencies.

 

[Rick36695]

I'm still hear the state troopers on their conventional frequencies.

155.44500??

 

[medic9351301]

mobile fire is not encrypted i just heard them on the feed .
only other suggestion is they might have changed control channels .

Mobile County Communications District Trunking System, Mobile, Alabama

Mobile County Communications District Trunking System Profile

www.radioreference.com

i dont think its a simulcast site if it was then scanners are bad for simulcast .
you might have something like control channel mode off .

 

[JamesBrox]

155.44500??

Yes

 

[garys]

From the database, it's a Harris P25 system and any channel can be the control channel. Make sure all frequencies are programmed in.

Police, Sheriif, and it looks like everything except fire dispatch is encrypted for the city FD.

 

[Rick36695]

From the database, it's a Harris P25 system and any channel can be the control channel. Make sure all frequencies are programmed in.

Police, Sheriif, and it looks like everything except fire dispatch is encrypted for the city FD.

All frequencies are programmed in I've been listening to Mobile since 1978. The last major change in frequencies was or about 01/01/2019 haven't had a problem receiving them till about two weeks ago.

 

[codeplug]

New 800 MHz Tower Site.
It is at the same location and it has the same coordinates as the Mount Vernon 700 Site.
WRMT222 - Mobile County Communications District

ULS Application - PubSafty/SpecEmer/PubSaftyNtlPlan,806-817/851-862MHz,Trunked - 0009565356 - MOBILE COUNTY COMMUNICATIONS DISTRTICT

Site Location:
Mount Vernon, AL
Washington County

Site Frequencies:
854.28750
854.58750
854.71250
856.38750
856.93750
857.06250
857.26250

Anyone close to this New 800 MHz Tower Site may want to check it for activity.
It looks like this New 800 Site will be Phase II/2, it appears to have P2 Emissions.
A Notification of Construction has not posted yet on this Site so it's unsure if it's On-the-Air yet or not.
Please Post any Tower Site info found here or Submit an update to RR.

 

[medic9351301]

All frequencies are programmed in I've been listening to Mobile since 1978. The last major change in frequencies was or about 01/01/2019 haven't had a problem receiving them till about two weeks ago.

well you got me then cause the co/ city fire is transmitting on the freqs listed .
its possible that you might have antenna issues .
do you have all the freqs for the 4 sites programed ?
have you tried driving around with the radio to see if you can hear anything

 

[wwhitby]

Also, are you picking up a control channel for the system?

One thing to try is to see if you can pick up the National Weather Service frequency for Mobile NWX. I use the NWS frequencies to test out the reception on scanners and two way radios.

To me, since you can't pick up the State Troopers, which are on VHF, it almost sounds like you've got a problem with the scanner, antenna connector or antenna.

 

[Rick36695]

Also, are you picking up a control channel for the system?

One thing to try is to see if you can pick up the National Weather Service frequency for Mobile NWX. I use the NWS frequencies to test out the reception on scanners and two way radios.

To me, since you can't pick up the State Troopers, which are on VHF, it almost sounds like you've got a problem with the scanner, antenna connector or antenna.

I pick up ham repeaters in Mobile, Baldwin counties and some in Mississippi, WX frequency, airports in Mobile and Baldwin counties.

I am picking up a control channel that's a good question I am not sure. How can I check?

 

[Rick36695]

I've entered Discovery format with frequency limits 769-775, and let it run 48 hours I got 6 hits but each was of 0 seconds duration and of course no audio. I've tried 2 different antennas, formatted the SD card.. Reloaded the channels still nothing. This is on both a BCD536HP and a TRX-1? I've gone portable with the TRX, I drove up the road about 2 miles and was within spitting distance of the broadcast site. Still nothing.

Is there anything else I should try?

 

[medic9351301]

have you entered all the freqs on the site cloest to you .
looks like some new info on the mount veron site in the database .
all these freqs must be entered cause its a harris system .
does the scanners have what is known as control channel mode on. keep in mind this system runs law 100 percent encrp.
if that does not help .
then you have a bad scanner . have you tried a master reset on the scanners .
does the scanners support phase 2 .
are the tags turned on in the 536 hp .
its also possible fire might have went encrypted. and since i think the feed is comming from the 911 center they are the only one that can send the signal to the feed .

RFSS	Site	Name	County	Freqs
1 (1)	001 (1)	Mount Vernon	Washington	769.61875c	771.34375c	771.79375c	772.03125c	772.19375c	772.81875c	774.40625c
2 (2)	002 (2)	Citronelle	Mobile	770.34375c	771.56875a	771.84375a	772.09375a	772.44375a	773.88125a	774.65625a
3 (3)	003 (3)	Salco Road	Mobile	771.09375c	771.64375a	771.89375a	772.14375a	772.49375a	774.13125a	774.90625a
10 (A)	010 (A)	Mobile County	Mobile	769.25625c	769.50625a	769.75625a	770.00625a	770.28125a	770.60625a	770.85625a
				771.18125a	771.43125a	771.90625a	772.30625a	772.58125a	772.88125a	773.13125a
				773.38125a	773.63125a

 

[codeplug]

Hello All.
This might be a dumb question but has anyone checked the Mobile County AIRS Sites/Frequencies
to see is any Mobile County agencies are operating on any of those Sites.
All of those Sites are licensed to the State of Alabama under License WPTZ783.
I am not sure if those AIRS Sites are still active or not or who is using them.
You may also want to check the New 800 Site for Mount Vernon that I posted above for activity.

 

[medic9351301]

its either 1 of 3 things .
1 bad antenna or bad scanner
2 control channel mode is not on.
3 fire has went encrypted .

i dont think mobile is on the state system . they own a harris system.
wait a second this might be the issue here.
The Mobile County Alabama 911 (MCCD) P25 system is being installed. It will have eight simulcast sites and three multicast sites .
if thats the case them 2 scanners are very bad with simulcast sites .

i guess the poster could try this

00A	1 (1)	001 (1)	Bayou La Batre	Mobile	769.18125a	769.43125c	769.61875	769.68125a	769.93125a	771.34375	771.79375
					772.03125	772.19375	772.81875	774.40625
00A	2 (2)	002 (2)	Mobile (Burns)	Mobile	770.19375c	770.44375a	770.69375a	770.94375a	771.34375	772.56875	772.84375
					773.09375	773.44375	774.88125	775.65625
00A	3 (3)	003 (3)	Citronelle	Mobile	770.15625a	770.40625c	770.65625a	770.90625a
00A	4 (4)	004 (4)	Mount Vernon (MoWa)	Washington	769.19375c	769.44375a	769.69375a	769.94375a
00A	5 (5)	005 (5)	Saraland	Mobile	773.06875c	773.31875a	773.56875a	773.81875a
00A	6 (6)	006 (6)	Wilmer	Mobile	769.15625c	769.40625a	769.65625a	769.90625a

but what has me concered is that he did not get anything while searching in the range he stated. even with the control channel mode off he would have gotten hits on the control channel would not pass traffic though .

also as of right now no scanner with accpect a phase 2 tdma contol channel .
also i guess he could try to contact the feed provider of saraland feed and ask for info .

 

[Rick36695]

Hello All.
This might be a dumb question but has anyone checked the Mobile County AIRS Sites/Frequencies
to see is any Mobile County agencies are operating on any of those Sites.
All of those Sites are licensed to the State of Alabama under License WPTZ783.
I am not sure if those AIRS Sites are still active or not or who is using them.
You may also want to check the New 800 Site for Mount Vernon that I posted above for activity.

I've checked AIRS and MCTS no joy on both, Mount Vernon is too far away from me.

 

[Rick36695]

its either 1 of 3 things .
1 bad antenna or bad scanner
2 control channel mode is not on.
3 fire has went encrypted .

i dont think mobile is on the state system . they own a harris system.
wait a second this might be the issue here.
The Mobile County Alabama 911 (MCCD) P25 system is being installed. It will have eight simulcast sites and three multicast sites .
if thats the case them 2 scanners are very bad with simulcast sites .

i guess the poster could try this

00A	1 (1)	001 (1)	Bayou La Batre	Mobile	769.18125a	769.43125c	769.61875	769.68125a	769.93125a	771.34375	771.79375
					772.03125	772.19375	772.81875	774.40625
00A	2 (2)	002 (2)	Mobile (Burns)	Mobile	770.19375c	770.44375a	770.69375a	770.94375a	771.34375	772.56875	772.84375
					773.09375	773.44375	774.88125	775.65625
00A	3 (3)	003 (3)	Citronelle	Mobile	770.15625a	770.40625c	770.65625a	770.90625a
00A	4 (4)	004 (4)	Mount Vernon (MoWa)	Washington	769.19375c	769.44375a	769.69375a	769.94375a
00A	5 (5)	005 (5)	Saraland	Mobile	773.06875c	773.31875a	773.56875a	773.81875a
00A	6 (6)	006 (6)	Wilmer	Mobile	769.15625c	769.40625a	769.65625a	769.90625a

but what has me concered is that he did not get anything while searching in the range he stated. even with the control channel mode off he would have gotten hits on the control channel would not pass traffic though .

also as of right now no scanner with accpect a phase 2 tdma contol channel .
also i guess he could try to contact the feed provider of saraland feed and ask for info .

 

[Rick36695]

1. While its possible the scanner or antenna is bad lets assume both are good for the moment since I receive other services well: military and civilian aircraft, ham, state troopers, etc.

2. Control Channel mode is not on, I'm using 536HP how do I check to see that the control channel mode is on? I'm checked the handbook and easy read docs but haven't found any reference to turning CCmode on or off.

3. Encrypted?? Very possible since I could monitor Fire, Sheriff and some EMT back about mid July went out of town came back a few weeks later and zilch...


also as of right now no scanner with accpect a phase 2 tdma contol channel .???
also i guess he could try to contact the feed provider of saraland feed and ask for info .

Any idea on how to contact feed provider?

 

[medic9351301]

well police and sheriff have beem encrypted for over a couple of years in mobile and baldwin counties .
its possible that you might have heard something from florida and assumed it was mobile . if your not getting nothing searching for freqs something is up with the scanner .
try

Easier to Read BCD436/536HP Digital Scanner Manual

also sytem is not a motorla systems its harris so it might need to be programed as edacs .

for contacting the feed provider there should be a link on the feed page to contact them

if all elses fails call uniden customer support and ask them how to program a harris system .

you might have to buy the edacs/ provoice upgrade.

1-800-297-1023Monday – Friday 8:30 AM – 4:30 PM CST

cause right now i dont know what else to tell you my friend.


phase 2 tmda is a control channel of a phase 2 system .