1. Basics of Scanners by Aaron Siller N5AMS

2. Basics of Trunking  Trunking  Updated Scanner Frequencies

3. What is a Trunking System A specialized repeater system with one or more towers and multiple frequencies A specialized repeater system with one or more towers and multiple frequencies This also allows channelized, semi-private conversations between many more groups of users This also allows channelized, semi-private conversations between many more groups of users

4. Types of Trunk Systems Project 25 Project 25 Motorola Smartnet/Smartzone Type I, II Motorola Smartnet/Smartzone Type I, II EDACS EDACS LTR LTR

5. Project 25 Trunking This is the new digital systems that can use a mix of 700/800MHz, UHF, and VHF frequencies This is the new digital systems that can use a mix of 700/800MHz, UHF, and VHF frequencies TxWARN (Texas Wide Area Radio Network) TxWARN (Texas Wide Area Radio Network)

6. Who uses P-25 in Houston

7. Analog Motorola System Type I Type I Type II Type II

8. Analog Motorola System Type I The Original Motorola Systems that were based on Fleets and Subfleets. The Original Motorola Systems that were based on Fleets and Subfleets. Each system had a certain number of Fleets assigned, and then each Fleet had a certain number of Subfleets and radio Ids. Each system had a certain number of Fleets assigned, and then each Fleet had a certain number of Subfleets and radio Ids.

9. Analog Motorola System Type II Motorola Type II Smartnet is a 2nd generation Motorola Trunking system Motorola Type II Smartnet is a 2nd generation Motorola Trunking system The term Smartnet refers to a set of features that make Motorola Type I and II trunked systems APCO-16 compliant The term Smartnet refers to a set of features that make Motorola Type I and II trunked systems APCO-16 compliant This allows for better security, emergency signaling, dynamic regrouping, remote radio monitoring, and Several other features This allows for better security, emergency signaling, dynamic regrouping, remote radio monitoring, and Several other features

10. Analog Motorola System SmartZone systems are comprised of Type II Smartnet systems that are networked together via microwave or land-line data circuits to provide multi-site wide-area communications SmartZone systems are comprised of Type II Smartnet systems that are networked together via microwave or land-line data circuits to provide multi-site wide-area communications A feature unique to SmartZone and allows efficient use of channels at each site is called "Dynamic Site assignment.” A feature unique to SmartZone and allows efficient use of channels at each site is called "Dynamic Site assignment.”

11. Analog Motorola System The characteristics of a Motorola SmartZone system are similar to Smartnet systems with the following changes: The characteristics of a Motorola SmartZone system are similar to Smartnet systems with the following changes: Up to 28 channels per site Up to 28 channels per site Up to 64 sites Up to 64 sites Analog and/or digital voice Analog and/or digital voice

12. Analog Motorola System Monitoring a SmartZone system with a trunktracking scanner is the same process as monitoring any other Type II Smartnet system, except that you can only monitor one site at a time Monitoring a SmartZone system with a trunktracking scanner is the same process as monitoring any other Type II Smartnet system, except that you can only monitor one site at a time For you to monitor a specific talkgroup on a SmartZone site, someone's radio must be affiliated to that specific site For you to monitor a specific talkgroup on a SmartZone site, someone's radio must be affiliated to that specific site

13. Enhanced Digital Access Communications System (EDACS) EDACS is much like a Motorola System except in a EDACS system they use Logical Channel Numbering(LCN) EDACS is much like a Motorola System except in a EDACS system they use Logical Channel Numbering(LCN) Rather than assign a frequency with a specific identifier, each frequency at a site is assigned a number between 1 through 25 Rather than assign a frequency with a specific identifier, each frequency at a site is assigned a number between 1 through 25

14. Who uses EDACS

15. Logical Trunked Radio(LTR) LTR is kinda like EDACS except unlike Motorola and EDACS, LTR doesn't have a dedicated control channel. LTR is kinda like EDACS except unlike Motorola and EDACS, LTR doesn't have a dedicated control channel. Each repeater has its own controller and all of these controllers are coordinated together. Each repeater has its own controller and all of these controllers are coordinated together.

16. Logical Trunked Radio(LTR) Each of these controllers periodically sends out a data burst (approximately every 10 seconds on LTR Standard systems) so that the subscriber units know that the system is there. Each of these controllers periodically sends out a data burst (approximately every 10 seconds on LTR Standard systems) so that the subscriber units know that the system is there. Much like EDACS, LTR is limited to 20 channels per site Much like EDACS, LTR is limited to 20 channels per site

17. Who uses LTR

18. North Shepherd Dispatch 460.325 (123.0) Northeast Dispatch 460.125 (123.0) Southeast Dispatch 460.025 (123.0) Southwest Dispatch 460.050 (123.0) Citywide 460.425 (123.0) Central Dispatch 460.100 (123.0) Special Ops Dispatch 460.350 (123.0)

19. Channel 8(simplex only) 460.225 (123.0) South Central Dispatch 460.550 (123.0) Channel 10 460.450 (123.0) Northwest 460.475 (123.0) Westside Dispatch 460.150 (123.0) VICE 460.400 (123.0) IAH Dispatch 453.900 (123.0) IAH Dispatch 453.900 (123.0)

20. Fire/EMS Dispatch 453.425 (127.3) North Ops TAC 2 453.500 (127.3) Central/West Ops TAC 3 453.675 (127.3) South Ops TAC 4 453.950 (127.3) EMS TAC 5 460.575 (127.3) General Info TAC 6 462.950 (127.3) Fireground TAC 7 462.975 (127.3) Fireground TAC 8 460.625 (127.3)

21. Humble Fire/EMS 154.415 (118.8) Atascocita Fire/EMS 155.1375 (103.5) Huffman Fire Department 154.445 (136.5) MCHD 155.325 (146.2) Conroe FD 154.190 (146.2) MCFD 1 158.820 (107.2) MCFD 2 158.790 (107.2) MCFD 3 154.965 (107.2) Scanner Frequencies (Cont.)

22. Www.radioreference.com Groups.yahoo.com/group/houstonscan Frequency Links