 |
|
|
In a conventional radio system, the user may only have access to a single channel. If the user wishes to make a call, he must first monitor the channel to make sure it is clear. If the channel is busy, the user must continue to monitor the channel until the co-channel user has terminated the conversation. By contrast, in a LTR trunked system the channel selection is automatic. When the user initiates a call, the trunking system electronically "monitors" each channel in the system and automatically selects one of the clear (unused) channel. Once a channel is selected, it becomes exclusive for the duration of the transmission and cannot be interrupted by other users.
Logic Trunked Radio (LTR) Trunk Systems do not have a control channel such as Motorola or Ericsson Trunked systems. On a LTR Trunk System a data burst can be heard on each frequency of the system around every 10 to 20 seconds. Also LTR frequencies do not have any CTCSS or DCS tones (pl tones). LTR Trunked systems are also known as SMR (Shared Mobile Radio) systems.
Each business user on a LTR Trunked system is assigned a talkgroup ID(s) that consists of an Area Code, a Home Channel
and a User ID.
Area Code - It is used if two different nearby LTR Trunked systems are using the same frequency(s).
The Area Code can be either 0 or 1.
One system is assigned an Area Code of 0 and the other is assigned an Area Code of 1.
Home Channel - Each user is assigned a home channel (frequency). If the system is not very busy, then all
conversations can be heard on the home channel. When the system starts getting busy, one or more of the users
will change over to another free home channel (frequency) or to one of the overflow channels. Overflow
channels have no assigned users. An LTR system can have a maximum of 20 channels (frequencies).
User ID - Each business user is assigned a single or a group of ID's (user identification) from 000 to
254. Most small business users will only have a single ID. Each home channel (frequency) can have a maximum
of 255 user ID's.
Example:
0-05-098
0 = Area Code (0 or 1)
05 = Home Channel (01 to 20)
098 = User ID (000 to 254)
The systems on the website have their home channels and frequencies listed. The frequencies listed without channel numbers are the overflow frequencies and still need their channel numbers figured out.
Some LTR Trunk Systems are single frequency (channel) systems. They use the talkgroup ID's in the same way as pl tones are used. On a single channel system the scanner will display other active talkgroups besides the one that it is locked on.
Most LTR Trunked Systems are PassPort (LTR-Net) enabled. The LTR Passport-enabled service allows multiple sites to be linked together and includes "follow-me roaming" features that are similar to the automatic handoff of radio signals characteristic of cellular radio systems.
Example: A Taxicab leaving Melbourne going to Orlando automatically switches to one of the Orlando systems after it gets out of the range of the Melbourne system. All communications will then be linked back to Melbourne via the Orlando system.
A dispatcher has the ability to contact a selected group of users, contact an individual user or to use Fleet Call to contact all users. Some systems can also have telephone interconnect.
These systems are used by taxicabs, pest control, wreckers, repairmen etc. The system owners lease air time to individual business users. The individual users do not need a separate license, only the system owner needs a license. Because of this the only way of finding out who is using these systems is by monitoring them.
Digital Packet Data talkgroups are used to send computer information that can contain vehicle location (GPS), status or any other type of digital information. All that can be heard on these talkgroups are bursts of digital data.
The frequencies with channel numbers are in LCN order and must be entered into the scanner in this order. Channels not listed must be left blank.
Example:
Ch. Frequency
1 461.6250
2 blank
3 461.3750
4 blank
5 461.2750
6 blank
7 461.8000
You can only enter one LTR Trunk System per bank.
Only the repeater output frequencies are listed. The repeater input frequencies are 5.0 MHz higher.
BREVARD COUNTY
CENTRAL COMMUNICATIONS NETWORK INC - MELBOURNE / PALM BAY
Ch. Frequency
1 454.0375
2 454.1125
3 454.4625
4 454.1625
5 454.6375
6 454.5875
7 454.3000
8 454.3625
9 454.4125
10 454.5375
CENTRAL COMMUNICATIONS NETWORK INC - BITHLO / COCOA
Ch. Frequency
1 454.4250
5 454.3250
8 454.2750
11 454.1500
15 454.5500
TELECOM NETWORK INC. - PALM BAY
Ch. Frequency
1 452.4250
3 452.2000
452.2250
RINKER MATERIALS CORP - MELBOURNE
Ch. Frequency
8 936.4750
12 936.9625
FLORIDA COMMUNICATIONW INC.- PALM BAY?
Ch. Frequency
1 463.4875
7 461.9625
BROWARD COUNTY
MOBILE COMMUNICATIONS SERVICES OF MIAMI - Pembroke Park
Ch. Frequency
1 461.2500
5 461.7500
DUVAL COUNTY
HASTY'S COMMUNICATIONS OF FLORIDA - Jacksonville
Ch. Frequency
3 464.1000
6 463.9750
9 463.5000
12 461.5500
T M FISHER - Jacksonville
Ch. Frequency
1 463.8875
5 461.9625
7 462.1375
REIDY RHODES & TAYLOR - Jacksonville
Ch. Frequency
1 452.0125
HIGHLANDS COUNTY
ROBERT C. CREWS II - Avon Park
Ch. Frequency
1 461.2000
3 461.3000
7 461.2500
HILLSBOROUGH COUNTY
BCI COMMUNICATIONS - Tampa
Ch. Frequency
1 452.7250
2 451.9750
3 451.7250
8 452.9750
INDIAN RIVER COUNTY
COMMUNICATIONS INTERNATIONAL INC - WABASSO
Ch. Frequency
1 464.5750
2 460.6750
3 461.3750
4 461.9750
5 464.9000
6 462.0000
7 461.8250
8 463.3250
RINKER MATERIALS CORP - WINTER BEACH
Ch. Frequency
8 935.9625
12 936.9250
LAKE COUNTY
TRI-CO COMMUNICATIONS INC - Leesburg
Ch. Frequency
5 461.7000
LEE COUNTY
GATOR TWO WAY - Estero
Ch. Frequency
5 452.2750
13 462.2000
17 461.8750
451.3000
451.5750
451.9000
452.7000
461.3500
464.9000
EVERGLADES COMMUNICATIONS INC - Bonita Springs
Ch. Frequency
2 451.8625
464.6125
MARION COUNTY
MIKE MCDONALD - Ocala
Ch. Frequency
5 452.7750
TRI CO COMMUNICATIONS INC - Ocala
Ch. Frequency
8 461.5000
MARTIN COUNTY
END OF THE LINE INC - STUART
Ch. Frequency
4 461.9500
9 461.5000
11 462.1000
17 463.8000
18 464.1500
20 463.9750
WM MANAGEMENT INC - PALM CITY
Ch. Frequency
6 461.4125
9 451.9375
10 461.9375
14 463.4375
18 463.7125
RINKER MATERIALS CORP - STUART
Ch. Frequency
8 935.6875
12 937.6375
ORANGE COUNTY
CENTRAL COMMUNICATIONS NETWORK INC - Orlando
Ch. Frequency
1 454.0375
2 454.1125
3 454.4625
4 454.1625
5 454.6375
6 454.5875
7 454.3000
8 454.3625
9 454.4125
10 454.5375
CENTRAL COMMUNICATIONS NETWORKS INC - Various
Ch. Frequency
9 451.7750
13 463.3000
15 454.0625
16 454.0875
17 454.1375
CENTRAL COMMUNICATIONS NETWORKS INC - Various
Ch. Frequency
1 454.4250
5 454.3250
8 454.2750
11 454.1500
15 454.5500
FLORIDA MOBILE TELECOM INC - ORLANDO - West
Ch. Frequency
1 461.1750
2 464.0250
3 461.0250
4 464.9000
5 461.5500
7 463.6250
9 463.5000
12 461.7000
17 461.1000
19 461.4000
FLORIDA MOBILE TELECOM INC - ORLANDO East
Ch. Frequency
9 461.9500
14 461.5000
RADIO ONE INC - ORLANDO
Ch. Frequency
10 452.3750
18 452.8500
TELECOM NETWORK INC - BITHLO
Ch. Frequency
1 463.8500
TELECOM NETWORK INC - ORLANDO South
Ch. Frequency
1 451.3000
2 463.2500
TELECOM NETWORK INC - ORLANDO North
Ch. Frequency
1 452.6750
3 462.0750
5 462.0250
8 461.4250
15 463.4000
TELECOM NETWORK INC - ORLANDO
Ch. Frequency
1 451.9500
NEXT CONNECT INC - ORLANDO
Ch. Frequency
1 461.7250
RF DATA INC - ORLANDO
Ch. Frequency
5 451.2625
AAA TWO WAY - BITHLO
Ch. Frequency
10 452.3750
UNIVERSITY OF CENTRAL FLORIDA - ORLANDO
Ch. Frequency
3 464.6125
7 464.3625
11 464.0875
? 461.8875
? 463.7625
ROSEN CENTRE HOTEL - ORLANDO
Ch. Frequency
1 451.5000
GRANDE LAKES - ORLANDO
Ch. Frequency
1 463.3500
HILTON GRAND VACATIONS CLUB - ORLANDO
Ch. Frequency
1 461.9500
FLORIDA ROCK INDUSTRIES - ORLANDO
Ch. Frequency
1 462.1750
2 461.20
MEARS TRANSPORTATION - ORLANDO
Ch. Frequency
1 851.7625
3 857.9125
7 860.8125
9 852.5625
11 855.3125
13 853.1125
17 854.4125
19 852.1625
? 853.6375
? 855.5625
LOVELACE TOWER
Ch. Frequency
2 860.0125
4 859.0125
6 858.0125
CELSMER? - BITHLO
Ch. Frequency
1 939.5625
2 939.6250
3 939.5500
4 939.6125
5 939.5375
6 939.6000
7 939.5250
8 939.5875
9 939.5125
10 939.5750
CELSMER? - WEST ORLANDO
Ch. Frequency
2 937.5125
8 937.5500
10 937.5625
12 937.5750
937.6000
937.6250
937.5250
937.5875
937.6125
937.5375
CUTTER INVESTMENTS - Orlando Int'l Airport
Ch. Frequency
2 938.2625
4 938.2750
6 938.2875
8 938.3000
10 938.3125
938.3250
938.3375
938.3500
938.3625
938.3750
PALM BEACH COUNTY
DOUGLAS SINCLAIR - West Palm Beach
Ch. Frequency
1 451.3250
DOUGLAS SINCLAIR - West Palm Beach
Ch. Frequency
16 463.2000
? 464.7000
DOUGLAS SINCLAIR - Delray Beach
Ch. Frequency
1 462.0750
? 463.2750
END OF THE LINE INC - Delray Beach
Ch. Frequency
1 461.8000
2 461.6000
WM MANAGEMENT INC - Singer Island
Ch. Frequency
5 452.2125
14 463.8125
FLORIDA TWO WAY RADIO INC - Loxahatchee
Ch. Frequency
11 462.0375
FLORIDA TWO WAY RADIO INC - Greenacres
Ch. Frequency
11 452.3500
RINKER MATERIALS CORP - WEST PALM BEACH
Ch. Frequency
8 935.9125
12 936.4125
POLK COUNTY
GENERAL REMANUFACTURING SERVICE - LAKELAND
Ch. Frequency
1 452.6500
2 451.3250
4 452.2500
5 452.8000
FREDERICK ELECTRONICS INC - LAKELAND
Ch. Frequency
1 451.6500
FREDERICK ELECTRONICS INC - HILLCREST HEIGHTS
Ch. Frequency
1 463.8500
DANIELS ELECTRONICS INC - LAKE HAMILTON
Ch. Frequency
1 461.6000
9 461.9500
ST. LUCIE COUNTY
WM MANAGEMENT INC - FORT PIERCE
Ch. Frequency
5 461.0500
6 461.3875
8 461.8625
10 462.8625
15 464.0750
DAVES COMMUNICATIONS - FORT PIERCE
Ch. Frequency
3 463.2500
6 451.7500
12 461.4625
END OF THE LINE INC - FORT PIERCE
Ch. Frequency
9 463.5500
11 461.1250
18 463.9250
20 461.7500
UNKNOWN - FT. PIERCE
Ch. Frequency
1 461.8000
2 461.6000
3 463.2000
FORT PIERCE UTILITIES AUTHORITY
Ch. Frequency
1 451.2250
2 451.6250
3 451.6750
4 462.5250
5 451.5750
RINKER MATERIALS CORP - FORT PIERCE
Ch. Frequency
8 936.9500
938.1500
939.6750
TARMAC FLORIDA INC - FT. PIERCE
Ch. Frequency
1 935.7500
VOLUSIA COUNTY
AIR SPECTRUM III INC - DAYTONA BEACH
Ch. Frequency
1 451.6250
10 461.90
20 463.7250
REPEATER SOLUTIONS INC - DAYTONA BEACH
Ch. Frequency
1 452.0125
451.7875
TRS WIRELESS INC - HOLLY HILL
Ch. Frequency
5 462.2500
7 462.4250
| If you publish any of the information on this website, post it to a newsgroup or use it on a web page, all I ask is that you give this website credit for the information and place a link to this web page: http://home.cfl.rr.com/scanner/ |  |
 |