Maryland FIRST 700mhz TRS

[BM82557]

Site 1.28 is online late this morning -
Updated with 3rd freq after BSI @ 11:38 -

Site: 1.28 NAC=4A1 BSI=WREX873

Neighbor: BEE00.4A2-1.14 ; Mount Airy ASR
Neighbor: BEE00.4A2-1.15 ; Bridgeport SHA ASR
Neighbor: BEE00.4A2-1.16 ; Gambrills Mountain ASR
Neighbor: BEE00.4A2-1.17 ; Lambs Knoll ASR
Neighbor: BEE00.4A2-1.18 ; Mount Quirauk ASR
Neighbor: BEE00.4A2-1.20 ; Washington County Simulcast

Channel 1-1214: 769.59375 BSI
Channel 1-1658: 772.36875 CC
Channel 1-1954: 774.21875 SCC

Site went off the air about 5 minutes after the 11:38 BSI

 

[maus92]

Was the site carrying any voice traffic?

Also, those freqs are assigned to the Tower Road site.

 

[BM82557]

Was the site carrying any voice traffic?

Also, those freqs are assigned to the Tower Road site.

No voice traffic. the only activity of any kind was one registration -

2020/05/04 11:35:21 NAC=4A1 Registration; 040:16777215 ACCEPT

 

[LordDonkey]

There was some traffic on the FiRST Admin 4 TG 8564 in Garrett yesterday at ~11:45 AM. It was a RIDs 2113534 and 2439003. They were talking about opening a garage door and a deputy door. I also seen the same 2439003 radio click up on GCSO Main.

 

[ThePhotoGuy]

12042 Caroline "Fire-Police"

 

[BM82557]

Site 1.28 back on the air at 12:03 pm today -

Additional freq shows up today --

Site: 1.28 NAC=4A1 BSI=WREX873

Neighbor: BEE00.4A2-1.14 ; Mount Airy ASR
Neighbor: BEE00.4A2-1.15 ; Bridgeport SHA ASR
Neighbor: BEE00.4A2-1.16 ; Gambrills Mountain ASR
Neighbor: BEE00.4A2-1.17 ; Lambs Knoll ASR
Neighbor: BEE00.4A2-1.18 ; Mount Quirauk ASR
Neighbor: BEE00.4A2-1.20 ; Washington County Simulcast

Channel 1-1214: 769.59375 BSI
Channel 3-1622: 772.14375-1 VOICE
Channel 3-1623: 772.14375-2 VOICE
Channel 1-1658: 772.36875 CC
Channel 1-1954: 774.21875 SCC



2020/05/08 12:03:40 Freq=772.368750 Current network: BEE00.4A2 MD FIRST
2020/05/08 12:03:40 Freq=772.368750 Current site: BEE00.4A2-1.28
2020/05/08 12:03:40 Freq=772.368750 NAC=4A1 Affiliation Request; Tgt=2113507 Src=SYSTEM [SYSTEM]
2020/05/08 12:03:41 Freq=772.368750 NAC=4A1 Current network: BEE00.4A2 MD FIRST
2020/05/08 12:03:41 Freq=772.368750 NAC=4A1 Current site: BEE00.4A2-1.28
2020/05/08 12:03:42 Freq=772.368750 NAC=4A1 BEE00.4A2-1.28 neighbor: Site BEE00.4A2-1.18; CC=1-1790 773.19375 Mount Quirauk ASR
2020/05/08 12:03:42 Freq=772.368750 NAC=4A1 BEE00.4A2-1.28 neighbor: Site BEE00.4A2-1.17; CC=1-1972 774.33125 Lambs Knoll ASR
2020/05/08 12:03:42 Freq=772.368750 NAC=4A1 BEE00.4A2-1.28 neighbor: Site BEE00.4A2-1.16; CC=1-1844 773.53125 Gambrills Mountain ASR
2020/05/08 12:03:42 Freq=772.368750 NAC=4A1 BEE00.4A2-1.28 neighbor: Site BEE00.4A2-1.15; CC=1-1606 772.04375 Bridgeport SHA ASR
2020/05/08 12:03:43 Freq=772.368750 NAC=4A1 BEE00.4A2-1.28 neighbor: Site BEE00.4A2-1.14; CC=1-1926 774.04375 Mount Airy ASR
2020/05/08 12:03:43 Freq=772.368750 NAC=4A1 BEE00.4A2-1.28 neighbor: Site BEE00.4A2-1.20; CC=1-1888 773.80625 Washington County Simulcast
2020/05/08 12:03:48 Freq=772.368750 NAC=4A1 Registration; RID=2113507 TG=8591 [FIRST Radio Techs] ACCEPT
2020/05/08 12:05:21 Freq=772.368750 NAC=4A1 Registration; RID=2113507 TG=8591 [FIRST Radio Techs] ACCEPT
2020/05/08 12:08:39 Freq=772.368750 NAC=4A1 BSI=WREX873 Ch=769.59375
2020/05/08 12:13:21 Freq=772.368750 NAC=4A1 Registration; RID=2113507 TG=8591 [FIRST Radio Techs] ACCEPT
2020/05/08 12:16:31 Freq=772.368750 NAC=4A1 Registration; RID=2113507 TG=8591 [FIRST Radio Techs] ACCEPT
2020/05/08 12:18:31 Freq=772.368750 NAC=4A1 Registration; RID=2113507 TG=8591 [FIRST Radio Techs] ACCEPT
2020/05/08 12:20:16 Freq=772.368750 NAC=4A1 Registration; RID=2113507 TG=8591 [FIRST Radio Techs] ACCEPT
2020/05/08 12:20:21 Freq=772.368750 NAC=4A1 Registration; RID=2119849 TG=7295 [MD SHA Radio Shop Central] DENY
2020/05/08 12:22:05 Freq=772.368750 NAC=4A1 Registration; RID=2113507 TG=8591 [FIRST Radio Techs] ACCEPT
2020/05/08 12:22:11 Freq=772.368750 NAC=4A1 Registration; RID=2113507 TG=8591 [FIRST Radio Techs] ACCEPT
2020/05/08 12:23:15 Freq=772.368750 NAC=4A1 Registration; RID=2113507 TG=8591 [FIRST Radio Techs] ACCEPT
2020/05/08 12:23:21 Freq=772.368750 NAC=4A1 Registration; RID=2113507 TG=8591 [FIRST Radio Techs] ACCEPT
2020/05/08 12:27:44 Freq=772.368750 NAC=4A1 Registration; RID=2128291 TG=7314 [MD ST Police Barrick G Westminster] DENY
2020/05/08 12:30:09 Freq=772.368750 NAC=4A1 Registration; RID=2126203 TG=7375 [MD ST Police Barrick O Hagerstown] DENY
2020/05/08 12:31:24 Freq=772.368750 NAC=4A1 Registration; RID=2113507 TG=8591 [FIRST Radio Techs] ACCEPT
2020/05/08 12:31:30 Freq=772.368750 NAC=4A1 Registration; RID=2113507 TG=8591 [FIRST Radio Techs] ACCEPT
2020/05/08 12:31:52 Freq=772.368750 NAC=4A1 Enc Group call; TG=8591 [FIRST Radio Techs] RID=2113507 Ch=772.14375-1 3s
2020/05/08 12:31:57 Freq=772.368750 NAC=4A1 Enc Group call; TG=8591 [FIRST Radio Techs] RID=2113534 Ch=772.14375-2 2s
2020/05/08 12:34:28 Freq=772.368750 NAC=4A1 Registration; RID=2113507 TG=8591 [FIRST Radio Techs] ACCEPT
2020/05/08 12:36:40 Freq=772.368750 NAC=4A1 Registration; RID=2138481 TG=7516 [MD DNR Police Area 7 Wash Fred Cos] DENY
2020/05/08 12:37:18 Freq=772.368750 NAC=4A1 Registration; RID=2119871 TG=7292 [MD SHA District 7 CHART Fred Carr How Cos] DENY
2020/05/08 12:37:38 Freq=772.368750 NAC=4A1 Enc Group call; TG=8591 [FIRST Radio Techs] RID=2113534 Ch=772.14375-1 5s
2020/05/08 12:37:47 Freq=772.368750 NAC=4A1 Enc Group call; TG=8591 [FIRST Radio Techs] RID=2113507 Ch=772.14375-2 3s
2020/05/08 12:37:50 Freq=772.368750 NAC=4A1 Enc Group call; TG=8591 [FIRST Radio Techs] RID=2113534 Ch=772.14375-2 20s
2020/05/08 12:38:15 Freq=772.368750 NAC=4A1 Enc Group call; TG=8591 [FIRST Radio Techs] RID=2113507 Ch=772.14375-1 7s
2020/05/08 12:38:35 Freq=772.368750 NAC=4A1 Enc Group call; TG=8591 [FIRST Radio Techs] RID=2113534 Ch=772.14375-2 8s
2020/05/08 12:38:39 Freq=772.368750 NAC=4A1 BSI=WREX873 Ch=769.59375
2020/05/08 12:38:42 Freq=772.368750 NAC=4A1 Registration; RID=2118944 TG=7292 [MD SHA District 7 CHART Fred Carr How Cos] DENY
2020/05/08 12:38:45 Freq=772.368750 NAC=4A1 Enc Group call; TG=8591 [FIRST Radio Techs] RID=2113507 Ch=772.14375-1 8s
2020/05/08 12:38:55 Freq=772.368750 NAC=4A1 Enc Group call; TG=8591 [FIRST Radio Techs] RID=2113534 Ch=772.14375-2 9s
2020/05/08 12:39:07 Freq=772.368750 NAC=4A1 Enc Group call; TG=8591 [FIRST Radio Techs] RID=2113507 Ch=772.14375-1 2s
2020/05/08 12:39:10 Freq=772.368750 NAC=4A1 Enc Group call; TG=8591 [FIRST Radio Techs] RID=2113534 Ch=772.14375-2 4s
2020/05/08 12:39:16 Freq=772.368750 NAC=4A1 Enc Group call; TG=8591 [FIRST Radio Techs] RID=2113507 Ch=772.14375-1 3s
2020/05/08 12:39:21 Freq=772.368750 NAC=4A1 Enc Group call; TG=8591 [FIRST Radio Techs] RID=2113534 Ch=772.14375-2 3s
2020/05/08 12:39:25 Freq=772.368750 NAC=4A1 Enc Group call; TG=8591 [FIRST Radio Techs] RID=2113507 Ch=772.14375-1 3s
2020/05/08 12:51:36 Freq=772.368750 NAC=4A1 Registration; RID=2118584 TG=7292 [MD SHA District 7 CHART Fred Carr How Cos] DENY
2020/05/08 12:51:38 Freq=772.368750 NAC=4A1 Registration; RID=2119888 TG=7288 [MD SHA District 3 CHART Mont PG Cos] DENY
2020/05/08 12:56:56 Freq=772.368750 NAC=4A1 Registration; RID=2138903 DENY
2020/05/08 12:57:24 Freq=772.368750 NAC=4A1 Registration; RID=2118584 TG=7292 [MD SHA District 7 CHART Fred Carr How Cos] DENY
2020/05/08 13:04:57 Freq=772.368750 NAC=4A1 Registration; RID=2113507 TG=8591 [FIRST Radio Techs] ACCEPT
2020/05/08 13:05:58 Freq=772.368750 NAC=4A1 Registration; RID=2113507 TG=8591 [FIRST Radio Techs] ACCEPT
2020/05/08 13:08:34 Freq=772.368750 NAC=4A1 Registration; RID=2119412 TG=7292 [MD SHA District 7 CHART Fred Carr How Cos] DENY
2020/05/08 13:08:39 Freq=772.368750 NAC=4A1 BSI=WREX873 Ch=769.59375
2020/05/08 13:19:17 Freq=772.368750 NAC=4A1 Registration; RID=2128358 TG=7376 [MD ST Police Barrick B Frederick] DENY
2020/05/08 13:24:57 Freq=772.368750 NAC=4A1 Registration; RID=2118585 TG=7292 [MD SHA District 7 CHART Fred Carr How Cos] DENY
2020/05/08 13:32:03 Freq=772.368750 NAC=4A1 Registration; RID=2113507 TG=8591 [FIRST Radio Techs] ACCEPT
2020/05/08 13:38:39 Freq=772.368750 NAC=4A1 BSI=WREX873 Ch=769.59375
2020/05/08 13:43:05 Freq=772.368750 NAC=4A1 Registration; RID=2119925 TG=7292 [MD SHA District 7 CHART Fred Carr How Cos] DENY
2020/05/08 13:48:37 Freq=772.368750 NAC=4A1 Registration; RID=2124833 TG=7314 [MD ST Police Barrick G Westminster] DENY

 

[maus92]

Interesting that the site is denying normal users, and only allowing techs to affiliate, lol. The last two freqs should be 771.09375 and 771.46875 according to coordination data.

 

[LordDonkey]

Garrett County just released a training video on their new APX 8000 and 8500 radios. Here is the talkgroup layout they show. Here's the video in case there's someone interested:

 

[maus92]

Good info in the presentation. So GC will utilize triband radios and DVRS, and the county is still operating mostly on VHF, retaining it as a backup. FIRST access continues with consolettes until June - July when the EOC revamp is completed. I'm assuming that the DVRS will be using a VHF channel? Interesting that units on the air stay on a Tac channel rather than on a main (dispatch) channel when unassigned. Maybe the main channel operator also acts as the fire calltaker? Not sure how Garrett 911 works.

 

[maus92]

The presentation also gives some info about the system design. There is a tower site in Thayerville that I did not know existed. The FCC ASR database does not have a record for it based on a location search, although I think it's probably a MIEMSS site. Two nearby towers owned by Potomac Edison and West VA Public Broadcasting are in the FCC database. The slide also defines what tower sites are members of the AlleGar Simulcast site: Dan's Rock, Big Savage, Mount Savage, and Westernport. The site seems to provide coverage on both side of the mountain range extending from Westernport north to Big Savage Mountain.

 

[LordDonkey]

Good info in the presentation. So GC will utilize triband radios and DVRS, and the county is still operating mostly on VHF, retaining it as a backup. FIRST access continues with consolettes until June - July when the EOC revamp is completed. I'm assuming that the DVRS will be using a VHF channel? Interesting that units on the air stay on a Tac channel rather than on a main (dispatch) channel when unassigned. Maybe the main channel operator also acts as the fire calltaker? Not sure how Garrett 911 works.

DVRS has both analog and digital repeater channels from what I can tell on Zone 43. Looks like the GC Roads Department, Public Works, Board of Education and Garrett Transit also have talkgroups on FiRST. I have seen some radios affiliate with unknown talkgroups in the Garrett Range. I have added those in the unknown TG wiki. Radio Maintenance was doing radio testing on GCSO Main from 2439003 today.

 

[maus92]

DVRS has both analog and digital repeater channels from what I can tell on Zone 43. Looks like the GC Roads Department, Public Works, Board of Education and Garrett Transit also have talkgroups on FiRST. I have seen some radios affiliate with unknown talkgroups in the Garrett Range. I have added those in the unknown TG wiki. Radio Maintenance was doing radio testing on GCSO Main from 2439003 today.

The frequencies used by the portable radios to the DVRS in the vehicle is what I'd like to know. Those freqs *should* be discrete, meaning no other uses in the system. I'd have to look at the Futurecomm documentation to figure out if the DVRS operates in an analog mode - not sure about that. I would think that the analog channels would be crosslinked at the system level, and not directly repeated at the vehicle, but who knows. Perhaps they will use the PW 453 MHz freq for the DVRS links, IDK. I'll have to listen the the presentation again.

Side note: what does the county use their 860Mhz LTR system for? Mutual aid coordination?

 

[LordDonkey]

The P25 DVRS they bought is the VRX1000 according to the video. It does have an analog mode.

VRX1000 - Vehicle Radio Extender | Futurecom

The VRX1000 is a compact 3W simplex radio extender integrated with Motorola APX. 2500, APX. 4500, APX. 5500, APX. 6500 and APX. 7500 series mobile radios.

www.futurecom.com

Not sure. I'm not able to receive the LTR system from my location. I think the closest transmitter is in Oakland, I'm near Friendsville.

 

[LordDonkey]

Also, I didn't see any mention whether Oakland PD is going over FiRST. If all the public works, towns, schools, roads depts, etc. are switching over in the future, I think they would as well for better interoperability. Probably don't have those on the Fire/EMS radios. I couldn't find the LEO training video if it existed.

 

[maus92]

Also, I didn't see any mention whether Oakland PD is going over FiRST. If all the public works, towns, schools, roads depts, etc. are switching over in the future, I think they would as well for better interoperability. Probably don't have those on the Fire/EMS radios. I couldn't find the LEO training video if it existed.

Probably depends if they can get grant money - the radios are ~$8K a piece. How big is that department, and who dispatches them?

 

[LordDonkey]

I'm not sure how big they are, PoliceOne.com says there are 6 officers. I don't know how accurate that is. As for who dispatches them, I'm not sure. According to the county's frequency page their frequency is 39.18 MHz for Garrett County/City Police. I don't hear any mention on GCSO Main of police units, unless they have the same unit number prefix (14xx) as the Sheriff's department. Some units refer to dispatch as "Garrett" or "county" or "Oakland." I'll have to take a scanner with me next time I go to Oakland and confirm if PD is on analog and what frequency it is. One of PD officers uses a Kenwood radio, I spotted it in a picture of an officer on the Oakland Town website. Not sure how old the picture is.

Side Note: The Garrett Emergency Services Board posts their meeting minutes online, here is the link. The last meeting minutes posted was November 2019.

 

[maus92]

I'm not sure how big they are, PoliceOne.com says there are 6 officers. I don't know how accurate that is. As for who dispatches them, I'm not sure. According to the county's frequency page their frequency is 39.18 MHz for Garrett County/City Police. I don't hear any mention on GCSO Main of police units, unless they have the same unit number prefix (14xx) as the Sheriff's department. Some units refer to dispatch as "Garrett" or "county" or "Oakland." I'll have to take a scanner with me next time I go to Oakland and confirm if PD is on analog and what frequency it is. One of PD officers uses a Kenwood radio, I spotted it in a picture of an officer on the Oakland Town website. Not sure how old the picture is.

Side Note: The Garrett Emergency Services Board posts their meeting minutes online, here is the link. The last meeting minutes posted was November 2019.

The RRDB has a UHF freq listed for "Oakland PD" at 453.725, and a current FCC license WNUK770. Fairly lower power at 20/25W, but two sites listed. Probably a consolette and a remote site. It's also on the county page as "Town of Oakland."

[TD][/TD]​

[TD][/TD]​

 

[BM82557]

Site 1.28 Tower Road configuration was completed yesterday and started carrying normal voice traffic at 2:10 pm.

 

[maus92]

Garrett Zone 30 has Town TGs, and Oakland is one of them, so I assume they are anticipating localities to use the system eventually. I'd also assume the LEO subscriber zone map would have TGs for local police departments for future use.

Also noting that the DNR zone has a IOP Call TG, and what looks to be an encrypted IOP TG.

 

[LordDonkey]

Yeah, I saw that E and thought encryption too, but MD Tac 12 doesn't have an E and it's 100% encryped.