City of Houston Trunk System                                6/24/07
                            by Myles Barkman KG5AI
                      http://home.houston.rr.com/freqzone
                            kg5ai*at*houston.rr.com

Motorola Type II System 2221 KNIV874 Downtown Houston (ct 116.13 Hz)
856.4375i,856.7375,856.7625(weak)
857.2625(weak-down?),857.4375,857.7375,857.7625,857.9375
858.2625,858.4375,858.7625,858.9375
859.2625,859.4375,859.7625,859.9375
860.2625c,860.4375c,860.7625c,860.9375c (control channel changes at 1am)

856.9375 reportedly used by water treatment plants in simplex mode
also try 856.2625, 858.7375, 859.7375 and 860.7375

Group  Hex      Use
 6096  17D      old bootlegger talkgroup heard in 2001
32848  805     
32880  807     *Houston City Marshals-Backup channel
32912  809     ?"ID number"
32944  80B     *Houston EOC "1A"?
32976  80D
33008  80F
33040  811
33072  813     **Water Utility Maint-Northwest "2A" (North Primary)
33104  815     **Water Utility Maint-Northeast "2B" (North Secondary)
33136  817     **Water Utility Maint-Southwest "2C" (South Primary) or northeast or after hours
33168  819     **Water Utility Maint-Southeast "2D" (South Secondary)
33200  81B
33232  81D
33264  81F
33296  821     **Solid Waste Management-Admin
33328  823     **sanitation Heavy Trash North?
33360  825     **sanitation Heavy Trash South?
33392  827
33424  829
33456  82B
33488  82D     **Water & Sewer wastewater satellite facilities  2800,2923
33520  82F
33552  831     **Water & Sewer Preventative Maint
33584  833
33616  835     **water treatment plant
33648  837     **meter connects
33680  839     **Traffic signals
33712  83B     **Traffic signs/barricades/cones
33744  83D     **Street maint.
33776  83F     **Bridge or Storm sewer maint.
33808  841     **Parks & Rec Urban Park rangers "A" , 9000-base security
33840  843 
33872  845     **"police station"
33904  847     **fleet maint.?
33936  849
33968  84B      Engineering Dept.?
34000  84D     *Taxi enforcement
34032  84F
34064  851 
34096  853     **Health/Animal Control "A" (still used?)
34128  855     *Engineering?, Finance? Sewer problems
34160  857     **electrical
34192  859     **water dept. back channel or heavy construction
34224  85B     **Health/Animal Control "B" (still used?)
34256  85D
34288  85F     **wastewater treatment plant 69th street?
34320  861     **city hall complex security
34352  863
34384  865 
34416  867     **water treatment? "going back to 'D'"
34448  869     **Parks & Rec Marketing & Special Events
34480  86B     **Parks & Rec Facilities Development & Maint
34512  86D     **Parks & Rec talk-around "E"
34544  86F     **East Water purification plant
34576  871     **Sanitation-garbage collection SE
34608  873     **Sanitation-garbage collection NE
34640  875     **"2F?" Sanitation-garbage collection NW
34672  877     **Sanitation-garbage collection SW Houston or service requests
34704  879     **Sanitation-garbage collection recycling
34736  87B
34768  87D
34800  87F     **Municipal Courts parking enforcement 1
34832  881     **Municipal Courts parking enforcement 2
34864  883     **"Teague", "St. Emanuel" HPD stations?
34896  885
34928  887     **Wastewater Technical Services - East
34960  889     
34992  88B
35024  88D
35056  88F
35088  891
35120  893
35152  895
35184  897
35216  899     **Water & Sewer-water quality control
35248  89B     *building insp.?
35280  89D     *building insp.
35312  89F     *
35344  8A1     *building insp.
35376  8A3     *building insp.
35408  8A5     **Planning & Development-Code Enforcement
35440  8A7
35472  8A9     *Building Insp. Ch.1
35504  8AB      Building Insp. Ch.2
35536  8AD     **Memorial Park Golf Course
35568  8AF     *
35600  8B1     **Miller Outdoor Theater
35632  8B3     *Houston Medical Strike Team-1 "J-HAT units"
35664  8B5     *Houston Medical Strike Team-2
35696  8B7      Houston Medical Strike Team-3?
35728  8B9     *Houston Medical Strike Team-4? (HFD Heavy Rescue units)
35740  8BB
35792  8BD     **? 
35824  8BF     **Solid Waste Collection "transfer station"
35856  8C1
35888  8C3
35920  8C5
35952  8C7
35984  8C9     *HPD Narc "2A" called "long range" (moved to STAR-Net 23760?)
36016  8CB     *HPD Narc "2B"
36048  8CD     *HPD Narc "2C"
36080  8CF      HPD Narc "2D"
36112  8D1      HPD Narc "2E"
36144  8D3      HPD Narc "2F"
36176  8D5
36208  8D7
36240  8D9
36272  8DB
36304  8DD
36336  8DF
36368  8E1
36400  8E3      Building Insp.?
36432  8E5
36464  8E7
36496  8E9     **Parks & Recreation-Grounds Maintenance "F"
36528  8EB
36560  8ED
36592  8EF
36624  8F1     *HDHHS (Houston Department of Health & Human Services) Public Health Response Team?
36656  8F3      HDHHS Public Health Response Team?
36688  8F5      HDHHS Public Health Response Team?
36720  8F7      HDHHS Public Health Response Team?
36752  8F9     *HDHHS Public Health Response Team?
36784  8FB
36816  8FD
36848  8FF     *"test...test"
36880  901     *surface water production?
36912  903
36944  905     **Wastewater Technical Services - West
36976  907
37008  909
37040  90B     *HPD Internal Affairs Division (IAD) Ch.1 or A
37072  90D      HPD IAD
37104  90F
37136  911     *electrical at IFest stage
37168  913
37200  915
37232  917
37264  919
37296  91B
37328  91D
37360  91F
37392  921
37424  923
37456  925
37488  927
37520  929
37552  92B
37584  92D
37616  92F     *transportation
37648  931     *transportation
37680  933      try
37712  935     **HFD use at Grand Prix 2007
37744  937     **?
37776  939     **HPD? 
37808  93B      try
37840  93D     **HFD use at Grand Prix 2006
38224  955
40816  9F7 

* confirmed use at one time
** confirmed use December 2005

Talkgroup labels:
CITY\EOC     City/EOC
C\O\C        City Ordinances & Codes?
COM\SHOP     Communications/Shop
SW\ADM\M     Solid Waste/Admin/Maint.?
SW\HT/N      Solid Waste/Heavy Trash-North
SW\HT/S      Solid Waste/Heavy Trash-South
SWCOL-SE     Solid Waste/Collections-Southeast
SWCOL-NE     Solid Waste/Collections-Northeast
SWCOL-NW     Solid Waste/Collections-Northwest
SWCOL-SW     Solid Waste/Collections-Southwest
RECYCLIN     Recycling Pickup
PROC\OPS     Procurement?
PW\EQ\MT     Public Works/Equipment/Maint.
WSTELOAD     Wasteload?
WTR\PROD     Water Production
WTR\QLTY     Water Quality
WTR\CUST     Water Customer
T/T\SIGL     Traffic/Transportation-Signals
T/T\SIGN     Traffic/Transportation-Signs
MGT\SUPT     Management Support?
PW\NW        Public Works-Northwest
PW\NE        Public Works-Northeast
PW\NE-1      Public Works-Northeast-1
PW\SW        Public Works-Southwest
PW\SE        Public Works-Southeast
PW\NWTP      Public Works-Northwest Wastewater Treatment Plant
PW\SWPP      Public Works-Southeast Water Purification Plant
ELECT        Elections
FLT\MGT\     Fleet Management
CAP\PROJ     Capital Projects (Construction,architectural,engineering contracts>$500,000)
TAXI         Taxi Enforcement
M\COURT      Municipal Courts
PARKS        Parks
P\RESOUR     Parks Resources
P\PERMIT     Parks Permits
P\FIELD      Parks Fields
P\SCTY       Parks Security
HLTH\POL     Health Police? Policies?
HLTH\ANM     Health-Animal Control (Bureau of Animal Regulation & Care)
HLTH\ENG     Bureaus of Public Health Engineering (Water Quality Control)
FACILITY     Facilities
MTRL/MGT     Material Management
ST\MAINT     Streets Maintenance
BRIDGE       Bridges
B/INSP       Building Inspectors
HMST-1       Houston Medical Strike Team-1
HMST-2       Houston Medical Strike Team-2
HMST-3       Houston Medical Strike Team-3
HMST-4       Houston Medical Strike Team-4
T AROUND     Talk Around
BACK-UP      Back-up
HARRIS\C     Harris County?

Other reseources:
http://home.houston.rr.com/ecarlson/scanner/houston/cohtrs.html